Patent Publication Number: US-2021189711-A1

Title: Blind install drain for bath or shower

Description:
CROSS-REFERENCE TO RELATED PATENT APPLICATION 
     This application claims the benefit of and priority to U.S. Provisional Application No. 62/949,942, filed on Dec. 18, 2019, the entire disclosure of which is hereby incorporated by reference herein. 
    
    
     BACKGROUND 
     The present application relates generally to the field of bath and shower drain installation assemblies. 
     When a person is installing a bathtub, that person may need access to the underside of the bathtub in order to install the drain to/in the drain opening of the bathtub. Once installed, the drain my project from the underside of the bathtub. The bathtub then would be lifted up, the drain opening lined up with a drain pipe in the floor, and then slid onto or over the drain pipe. This installation process can be difficult for a single person to do on their own. And if the bathtub is heavy, such as for an iron stand-alone bathtub, more than two people may be required to lift the bathtub. 
     Accordingly, it may be desirable to use a drain that can be installed entirely from the top-side of the bathtub (e.g., without requiring access to the underside of the bathtub.) 
     SUMMARY 
     At least one embodiment relates to a drain installation assembly. The drain installation assembly includes a drain body and a drain coupling. The drain coupling is configured to be inserted into a drain opening of a wash basin from a top side of the wash basin. The drain coupling comprises a first coupling end and a second coupling end, the second coupling end positioned opposite to the first coupling end. The drain coupling further includes a squeeze portion positioned between the first coupling end and the second coupling end, the squeeze portion formed of a flexible material. The drain body comprises a body flange extending radially away from the drain body. The squeeze portion is configured to deform so as to define a squeeze bulge when the drain coupling is coupled to the drain body, the squeeze bulge having a diameter greater than a diameter of the drain opening of the wash basin. 
     At least one embodiment relates to a drain assembly for coupling a wash basin to a drain pipe from above the wash basin. The drain assembly includes a drain coupling and a drain body configured for coupling to the drain coupling. The drain coupling is configured to be inserted into a drain opening of the wash basin from a top side of the wash basin. The drain coupling is also configured to extend into the drain pipe. 
     At least one embodiment relates to a method of installing a drain assembly in a wash basin. The method incudes inserting a drain coupling into a drain opening in the wash basin from a top side of the wash basin, and inserting a drain body into the drain coupling, and coupling the drain body to the drain coupling. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows a wash basin according to an example embodiment. 
         FIG. 2  shows an exploded view of a blind drain installation assembly according to an example embodiment. 
         FIG. 3A  shows a perspective view of a portion of the blind drain installation assembly of  FIG. 2 . 
         FIG. 3B  shows a side, cross-section view of the portion of the blind drain installation assembly of  FIG. 3A . 
         FIG. 3C  shows a top view of the portion of the blind drain installation assembly of  FIG. 3A . 
         FIG. 4A  shows a perspective view of a portion of the blind drain installation assembly of  FIG. 2 . 
         FIG. 4B  shows a side, cross-section view of the portion of the blind drain installation assembly of  FIG. 4A . 
         FIG. 4C  shows a top view of the portion of the blind drain installation assembly of  FIG. 4A . 
         FIG. 5A  shows an exploded view of the blind drain installation assembly of  FIG. 2  partially installed. 
         FIG. 5B  shows an exploded view of the blind drain installation assembly of  FIG. 2  fully installed. 
         FIG. 6  shows a method of installing the blind drain installation assembly of  FIG. 2 , according to an exemplary embodiment. 
         FIG. 7  shows an exploded view of a blind drain installation assembly according to another example embodiment. 
         FIG. 8A  shows a perspective view of a portion of the blind drain installation assembly of  FIG. 7 . 
         FIG. 8B  shows a side, cross-section view of the portion of the blind drain installation assembly of  FIG. 8A . 
         FIG. 8C  shows a top view of the portion of the blind drain installation assembly of  FIG. 8A . 
         FIG. 9A  shows a perspective view of a portion of the blind drain installation assembly of  FIG. 7 . 
         FIG. 9B  shows a side, cross-section view of the portion of the blind drain installation assembly of  FIG. 9A . 
         FIG. 9C  shows a top view of the portion of the blind drain installation assembly of  FIG. 9A . 
         FIG. 9D  shows a zoomed-in view of the portion B of  FIG. 9B . 
         FIG. 9E  shows a perspective view of a portion of the blind drain installation assembly of  FIG. 7 . 
         FIG. 10A  shows an exploded side, cross-sectional view of the blind drain installation assembly of  FIG. 7  partially installed. 
         FIG. 10B  shows an exploded side, cross-sectional view of the blind drain installation assembly of  FIG. 7  fully installed. 
         FIG. 11  shows a method of installing the blind drain installation assembly of  FIG. 7 , according to an exemplary embodiment. 
         FIG. 12  shows an exploded view of a blind drain installation assembly according to yet another example embodiment. 
         FIG. 13A  shows a perspective view of a portion of the blind drain installation assembly of  FIG. 12 . 
         FIG. 13B  shows a front, cross-section view of the portion of the blind drain installation assembly of  FIG. 13A . 
         FIG. 13C  shows a left, cross-section view of the portion of the blind drain installation assembly of  FIG. 13A . 
         FIG. 13D  shows a right, cross-section view of the portion of the blind drain installation assembly of  FIG. 13A . 
         FIG. 14A  shows a close-up perspective view of a portion of the portion of the blind drain installation assembly of  FIG. 13A   
         FIG. 14B  shows a close-up perspective view of a portion of the portion of the blind drain installation assembly of  FIG. 14A . 
         FIG. 15A  shows a perspective view of a portion of the blind drain installation assembly of  FIG. 12 . 
         FIG. 15B  shows a front, cross-section view of the portion of the blind drain installation assembly of  FIG. 15A . 
         FIG. 15C  shows a left, cross-section view of the portion of the blind drain installation assembly of  FIG. 15A . 
         FIG. 16A  shows a perspective, cross-sectional view of the blind drain installation assembly of  FIG. 12  partially installed. 
         FIG. 16B  shows a perspective, cross-sectional view of the blind drain installation assembly of  FIG. 12  partially installed, including an installation fixture according to an example embodiment. 
         FIG. 16C  shows a perspective, cross-sectional view of the blind drain installation assembly of  FIG. 12  fully installed, including the installation fixture according to an example embodiment. 
         FIG. 16D  shows a perspective, cross-sectional view of the blind drain installation assembly of  FIG. 12  fully installed, including the toe tap. 
         FIG. 17A  shows a perspective view of a finger cover, according to an example embodiment. 
         FIG. 17B  shows a perspective, cross-sectional view of the finger cover of  FIG. 17A  installed in the blind drain installation assembly of  FIG. 16D . 
         FIG. 18  a method of installing the blind drain installation assembly of  FIG. 12 , according to an exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Referring generally to the FIGURES, a blind drain installation assembly is shown according to various exemplary embodiments. The blind drain installation assembly is structured to couple a drain opening in a wash basin to a drain pipe in a floor without requiring access to the underside of the wash basin. This may allow an installer of the wash basin to install the blind drain installation assembly without having to lift the wash basin off the floor. Instead, the installer may slide the wash basin over the drain pipe in the floor and line up the drain pipe with the drain opening in the wash basin. Doing so may save time and avoid injury. 
     Referring to  FIG. 1 , a wash basin (e.g., tub, bathtub, basin, bath, sink, shower, shower floor, etc.)  100  is shown according to an exemplary embodiment. The wash basin  100  may be tiled, poured cement, metal, plastic, porcelain, acrylic, acrylic resin, fiberglass, reinforced fiber cloth, polyester, vitreous enamel, cast iron, porcelain enameled steel, stone, stone resin, or similar products and composites. The wash basin  100  rests on a floor (e.g., subfloor, ground, surface, etc.)  105 . The floor  105  includes a floor opening (e.g., hole, cut-out, orifice, etc.)  107  through which drain plumbing may extend. The floor opening  107  is defined by a floor opening diameter D 0 . The wash basin  100  is configured to receive a flow of water from a faucet (e.g., shower, shower head, spray head, spout, etc.). The wash basin  100  has a top (e.g., inner, first, etc.) basin surface  110  and a bottom (e.g., outer, second, etc.) basin surface  120 . The top basin surface  110  and the bottom basin surface  120  are separated from one another by a thickness of the wash basin  100  shown as a basin thickness H 1 . Portions of the top basin surface  110  and the bottom basin surface  120  may be substantially parallel to one another. The top basin surface  110  may be shaped into a cavity configured to hold water. The top basin surface  110  is resistant to water corrosion (e.g., warping, rusting, dissolving, etc.) and may be manufactured from plastic, fiberglass, stone, stone resin, porcelain, or various other suitable surfaces. Extending through both the top basin surface  110  and the bottom basin surface  120  is a drain opening (e.g., orifice, hole, opening, drain, etc.)  130 . The drain opening  130  has a drain opening diameter D 1  proximate both the top basin surface  110  and the bottom basin surface  120 . The top basin surface  110  may be configured to direct a flow of water from the faucet toward the drain opening  130 . A portion of the top basin surface  110  proximate the drain opening  130  may be recessed (e.g., depressed, sunken, funneled, etc.) to aid in directing a flow of water from the wash basin  100  toward the drain opening  130 . The drain opening  130  is configured to accept a drain assembly, such as a blind drain installation assembly  200  as shown in  FIG. 2 . 
     Disposed between the top basin surface  110  and the bottom basin surface  120 , proximate the drain opening  130 , may be a cavity (e.g., channel, aperture, etc.), shown as an overflow channel  140 . 
     Referring to  FIG. 2 , an exploded view of the blind drain installation assembly  200  is shown, according to an example embodiment. The blind drain installation assembly  200  includes a drain body  220  and a drain coupling  230 . In some embodiments, the blind drain assembly includes the drain body  220 , the drain coupling  230 , and a toe tap  210 . The toe tap (e.g., stopper, plug, drain plug, toe touch, foot actuated stopper)  210  may be any variety of drain stopper, including a lift-and-turn stopper, push-and-pull stopper, flip-it stopper, trip lever stopper, pop-up stopper, or similar drain plug or stopper. The toe tap  210  is configured to be disposed within and received by the drain body  220 . The drain body  220  receives and is removably coupled to (e.g., threadingly coupled to, etc.) the toe tap  210 . A portion of the toe tap  210  extends out of the drain body  220 . The drain body  220  and the toe tap  210  are configured to cooperate to selectively prevent a flow of water, such as from the wash basin  100 , through the drain body  220 . The drain body  220  is configured to be disposed within and threadingly coupled to the drain coupling  230 . The drain coupling  230  may be manufactured from an elastomer, polymer, plastic, wood, or any one of a variety of materials able to be cast, milled, forged, molded, or carved. The drain coupling  230  is configured to accept both the drain body  220  and the toe tap  210 . The drain coupling  230 , the drain body  220 , and the toe tap  210  cooperate to selectively prevent a flow of water through the drain coupling  230 . The blind drain installation assembly  200  is configured to be received by the drain opening  130 . The drain opening  130  may interface with the drain coupling  230 , the drain body  220 , and the toe tap  210 . 
     Disposed beneath the wash basin  100  is a drain pipe (e.g., drain plumbing, drain tube, pipe, conduit, etc.)  240  including a top drain pipe portion  245 . The top drain pipe portion  245  may be configured to extend through the floor opening  107  such that the top drain pipe portion  245  is disposed above the floor  105 . In some embodiments, the top drain pipe portion  245  is even (e.g., flush) with the floor  105  and does not extend above the floor  105 . This may be desirable during the installation of the wash basin  100 . The wash basin  100  may be heavy—so heavy that lifting the wash basin  100  may be difficult or dangerous. With the drain pipe  240  flush with the floor  105 , the wash basin  100  may be slid over the floor opening  107  to line up the drain opening  130  with (e.g., make the drain opening  130  concentric about) the drain pipe  240 . The drain coupling  230  is configured to slide through the drain opening  130  and surround the drain pipe  240 . The drain coupling  230  and the drain pipe  240  cooperate to prevent a flow of water from flowing between the drain pipe  240  and the drain coupling  230 . In some embodiments, the drain pipe  240  and the drain coupling  230  are coupled using a retention ring or compression ring. In other embodiments, the drain coupling  230  forms a water-tight friction fit with the drain pipe  240 . In some embodiments, the elasticity of the material used to form the drain coupling  230  creates a watertight seal between the drain coupling  230  and the drain pipe  240 . 
     Turning to  FIG. 3A and 3B , an exemplary embodiment of the drain coupling  230  is shown. The drain coupling  230  includes a generally annular first body  302  having a first upper end  304 , a first lower end  306 , a first outer surface  308 , and a first inner surface  310 . The first outer surface  308  and the first inner surface  310  may be concentric about the central axis Z. The first inner surface  310  defines an orifice (e.g., a flow path, etc.), shown as a coupling opening  312  configured to accept the drain pipe  240  and the drain body  220 . The coupling opening  312  is concentric about a central axis Z. 
     The first inner surface  310  is configured to interface with the drain pipe  240  and provide a sealant such that a watertight seal is formed between the drain coupling  230  and the drain pipe  240 . The drain coupling  230  may include a plurality of annular projections  313  extending laterally away from the first inner surface  310  and toward the central axis Z. As shown in  FIG. 3B , the plurality of annular projections  313  are disposed between the first upper end  304  and approximately half-way between the first upper end  304  and the first lower end  306 . The plurality of annular projections  313  may be integrally manufactured to the drain coupling  230 . In some embodiments, the plurality of annular projections  313  are manufactured separately and later coupled to the drain coupling  230 . The drain coupling  230  may be formed from a compressible material (e.g., neoprene, rubber, etc.) or other suitable material configured to provide sealing engagement between the first inner surface  310  and the drain pipe  240 . In some embodiments, the drain coupling  230  may be coupled to the drain pipe  240  such that the drain coupling  230  stays in place relative to the drain pipe  240  as the wash basin  100  is moved around relative to the drain pipe  240 . 
     Proximate the first lower end  306 , the first inner surface  310  has a second diameter D 2 . The first inner surface  310  maintains a circular cross-section of the second diameter D 2  extending from the first lower end  306  to the first upper end  304 . In some embodiments, the diameter of the first inner surface  310  proximate the first upper end  304  is different (e.g., greater, lesser, etc.) than the second diameter D 2 . The first inner surface  310  is configured to accept the drain body  220 . The first inner surface  310  is also configured to allow a flow of water to pass through.  FIG. 3C  shows a generally annular coupling opening  312 , although according to other embodiments, the coupling opening  312  may be elliptical, hexagonal, octagonal, or otherwise similar to the shape of the drain pipe  240 . Proximate the first lower end  306 , the first outer surface  308  has a third diameter D 3 . The first outer surface  308  maintains a circular cross-section of the third diameter D 3  extending from the first lower end  306  to the first upper end  304 . In some embodiments, the first lower end  306  and the first upper end  304  have different diameters. The third diameter D 3  is less than both the drain opening diameter D 1  and the floor opening diameter D 0  such that drain coupling  230  can be extended through the drain opening  130  and the floor opening  107 . 
     A generally annular first flange  314  extends laterally outwardly from (e.g., orthogonally to) the first outer surface  308 . As shown in  FIG. 3B , the first flange  314  extends from the first upper end  304  of the first body  302 . In some embodiments, the first flange  314  may extend outwardly from the first outer surface  308  at other heights such that at least a portion of the first body  302  extends above the first flange  314  (e.g., between the first flange  314  and the first upper end  304 ). The first flange  314  has a fourth diameter D 4 . The fourth diameter D 4  is greater than the drain opening diameter D 1 . The first flange  314  is configured to interface with the top basin surface  110  to form a watertight seal such that a flow of water is not able to exist between the top basin surface  110  and the first flange  314 . 
     The first flange  314  includes a first flange first surface  316 , a first flange second surface  318 , and a first flange third surface  320 . The first flange first surface  316  is disposed at an underside of the first flange  314  and is configured to cooperate and interface with the top basin surface  110  such that a water-tight seal is created between the first flange  314  and the top basin surface  110 . The first flange first surface  316  extends laterally outwardly from and is generally perpendicular to and contiguous with the first outer surface  308 . In some embodiments, the first flange first surface  316  projects outwardly from the first outer surface  308  at an angle that is not perpendicular. The first flange second surface  318  is contiguous with the first flange first surface  316 . The first flange second surface  318  may be concentric about the center axis Z and may have the fourth diameter D 4 . The first flange second surface  318  may be parallel with the first outer surface  308 . The first flange third surface  320  is disposed on a top side of the first flange  314 . The first flange third surface  320  is contiguous with the first flange second surface  318  and may be parallel to the first flange first surface  316 . The first flange third surface  320  is configured to interface with a portion of the drain body  220  to create a watertight seal between the drain coupling  230  and the drain body  220 . The first flange third surface  320  is contiguous with the first inner surface  310 . The first flange third surface  320  and the first inner surface  310  may meet at a corner. In some embodiments, the corner is chamfered (e.g., filleted, rounded, blunted, etc.) such that the transition between the first flange third surface  320  and the first inner surface  310  is uninterrupted (e.g., smooth, rounded, etc.). 
     The drain coupling  230  further includes a generally annular flange shown as coupling threads  330 . The coupling threads  330  interrupt the first inner surface  310  such that a portion of the first inner surface  310  exists between the first upper end  304  and the coupling threads  330 . As shown in  FIG. 3B , the coupling threads  330  are disposed approximately half-way between the first upper end  304  and the first lower end  306 . In some embodiments, the coupling threads  330  are disposed nearer to the first lower end  306  than the first upper end  304 , and vice versa. In some embodiments, the plurality of annular projections  313  are disposed between the coupling threads  330  and the first lower end  306 . The coupling threads  330  may be manufactured from brass, steel, aluminum, plastic, titanium, rubber, or similar materials. The coupling threads  330  may be manufactured into the first inner surface  310  such that the drain coupling  230  and the coupling threads  330  are a single body (e.g., all one piece, etc.). In some embodiments, the coupling threads  330  are manufactured separately from the drain coupling  230  and later coupled to the first inner surface  310  by over-molding, fasteners, interference fit, friction, adhesives, glue, or by similar coupling means. The coupling threads  330  may be concentric about the central axis Z. The coupling threads  330  may define a diameter slightly less than the second diameter D 2 . In some embodiments, the coupling threads  330  define a diameter equal to the second diameter D 2 . The coupling threads  330  are configured to threadingly couple to the drain body  220 . Prior to threading together the drain body  220  and the coupling threads  330 , an adhesive (e.g., thread sealant, plumber&#39;s tape, Teflon tape, etc.) may be applied to either the coupling threads  330 , the drain body  220 , or both such that a permanent and/or watertight seal is formed between the coupling threads  330  and the drain body  220 . In some embodiments, a watertight seal between the coupling threads  330  and the drain body  220  is not necessary, as a flow of water between the coupling threads  330  and the drain body  220  may still flow through the drain coupling  230  and thus through the drain pipe  240 . 
     The drain coupling  230  may further include a plurality of holes (e.g., orifices, openings, etc.) shown as coupling holes  340 . The coupling holes  340  extend through the first inner surface  310  and the first outer surface  308  such that the drain coupling  230  is in fluid communication with the overflow channel  140  when the drain coupling  230  is inserted into the drain opening  130 . In some embodiments, the drain coupling  230  does not include the coupling holes  340 . For example, coupling holes  340  may not be advantageous for use in an alternative wash basin  100  that does not include the overflow channel  140  or a similar overflow channel. Each one of the coupling holes  340  is defined by an annular coupling hole surface  342  that is contiguous with both the first inner surface  310  and the first outer surface  308 . 
     Turning to  FIGS. 4A and 4B , an exemplary embodiment of the drain body  220  is shown. The drain body  220  includes a generally annular second body  402  having a second upper end  404 , a second lower end  406 , a second outer surface  408 , and a second inner surface  410 . The second outer surface  408  and the second inner surface  410  are concentric about the central axis Z. The second inner surface  410  defines a drain body opening  412  having a fifth diameter D 5  proximate the second lower end  406 . The drain body opening  412  maintains a circular cross-section of the fifth diameter D 5  extending between the second upper end  404  and the second lower end  406 . The second outer surface  408  maintains a circular cross-section of a sixth diameter D 6  extending between the second upper end  404  and the second lower end  406 . 
     The drain body  220  further includes a generally annular second flange  414  extending laterally outwardly from (e.g., orthogonal to) the second outer surface  408 . As shown in  FIG. 4B , the second flange  414  extends outwardly from the second upper end  404 . In some embodiments, the second flange  414  may extend from the second outer surface  408  at other heights such that a portion of the second body  402  extends above the second flange  414  (e.g., between the second flange  414  and the second upper end  404 .) The second flange  414  has a seventh diameter D 7 . The seventh diameter D 7  may be generally equal to the fourth diameter D 4 . The seventh diameter D 7  is greater than the drain opening diameter D 1 . 
     The second flange  414  includes a second flange first surface  416 , a second flange second surface  418 , and a second flange third surface  420 . The second flange first surface  416  is contiguous with and concentric about the second outer surface  408 . In some embodiments, the second flange first surface  416  is perpendicular to the second outer surface  408 . In other embodiments, the second flange first surface  416  meets the second outer surface  408  at an angle other than perpendicular. In some embodiments, where the second outer surface  408  and the second flange first surface  416  meet is rounded (e.g., not a sharp corner). This rounded interface between the second outer surface  408  and the second flange first surface  416  may assist in biasing the first flange  314  toward the surfaces defining the drain opening  130  to create a watertight seal between the top basin surface  110 , the first flange  314 , and the second flange  414 . 
     The second flange first surface  416  is contiguous with the second flange second surface  418 . The second flange second surface  418  may be concentric about the central axis Z. The second flange second surface  418  is contiguous with the second flange third surface  420 . The second flange third surface  420  may meet the second flange first surface  416  at a corner such that there is no second flange second surface  418 . In some embodiments, the second flange second surface  418  is chamfered such that the transition between the second flange first surface  416  and the second flange third surface  420  is smooth (e.g., rounded, uninterrupted, etc.). The second flange third surface  420  is also contiguous with the second inner surface  410 . The second flange third surface  420  may be perpendicular to and concentric about the second inner surface  410 . In some embodiments, where the second flange third surface  420  and the second inner surface  410  meet may be chamfered such that the transition from the second flange third surface  420  to the second inner surface  410  is uninterrupted by a sharp corner or similar discontinuity (e.g., smooth, rounded, continuous, etc.). 
     The drain body  220  further includes a generally annular, threaded body, shown as drain body threads  430 . The drain body threads  430  interrupt the second outer surface  408  such that a portion of the second outer surface  408  exists between the second upper end  404  and the drain body threads  430 . In some embodiments, the drain body threads  430  are disposed proximate the second lower end  406  such that the second outer surface  408  does not exist between the drain body threads  430  and the second lower end  406 . In some embodiments, the drain body threads  430  extend between the second upper end  404  and the second lower end  406  such that the second outer surface  408  is entirely covered by the drain body threads  430 . As shown in  FIG. 4B , the drain body threads  430  extend between the second lower end  406  and approximately half-way between the second upper end  404  and the second lower end  406 . The drain body threads  430  may be manufactured from brass, steel, aluminum, plastic, titanium, rubber, or similar materials. The drain body threads  430  may be manufactured into the second outer surface  408  such that the drain body  220  and the drain body threads  430  are a single body (e.g., all one piece, etc.). In some embodiments, the drain body threads  430  are manufactured separately from the drain body  220  and later coupled to the second outer surface  408  by fasteners, interference fit, friction, adhesives, glue, or by similar coupling means. The drain body threads  430  may be concentric about the central axis Z. The drain body threads  430  are configured to threadingly couple to the drain coupling  230  such that a permanent and/or watertight seal is formed between the drain body threads  430  and the coupling threads  330 . In some embodiments, a watertight seal between the coupling threads  330  and the drain body threads  430  is not necessary, as a flow of water between the coupling threads  330  and the drain body threads  430  may still flow through the drain coupling  230  and thus through the drain pipe  240 . As the drain body  220  is disposed within the drain coupling  230 , it may not be necessary, in some embodiments, to create a watertight seal at any interface between the drain body  220  and the drain coupling  230 . 
     The drain body  220  may further include overflow openings  440 . The overflow openings interrupt both the second outer surface  408  and the second inner surface  410 . The overflow openings  440  may extend through the second outer surface  408  and the second inner surface  410  such that a flow of water may exit the drain body  220  through the overflow openings  440 . Each of the overflow openings  440  is defined by a generally rectangular surface, shown as an overflow opening surface  442 , contiguous with both the second outer surface  408  and the second inner surface  410 . 
     The drain body  220  further includes a generally annular flange, shown as a second lattice  450 , disposed within the second inner surface  410  and extending laterally away from the second inner surface  410 , toward the central axis Z. As shown in  FIG. 4B , the second lattice  450  may be positioned proximate the second lower end  406 . In some embodiments, the second lattice  450  is positioned at a different height such that a portion of the drain body  220  extends between the second lattice  450  and the second lower end  406 . The second lattice  450  may be manufactured from metal, plastic, or similar materials. The second lattice  450  may be structurally integrated with the drain body  220 , such as is possible though die-casting, injection molding, 3D printing, or similar manufacturing processes. In some embodiments, the second lattice  450  is manufactured separately from the drain body  220  and later coupled to the drain body  220  by welding, fasteners, friction, interference fit, or other coupling means. 
     The second lattice  450  includes a generally planar top second lattice surface  452  and a generally planar bottom second lattice surface  454 . The top second lattice surface  452  and the bottom second lattice surface  454  are both contiguous with the second inner surface  410 . 
     Extending through both the top second lattice surface  452  and the bottom second lattice surface  454  may be a plurality of openings configured to allow a flow of water to pass through the drain body  220 , and likewise the drain coupling  230 . As shown in  FIG. 4C , the second lattice  450  may include a plurality of support structures  456  configured to extend laterally inward from the second inner surface  410  and toward the central axis Z. The plurality of support structures  456  are configured to allow a flow of water to pass through the drain body  220 , such as a flow of water from the wash basin  100 . 
     The plurality of support structures  456  are configured to cooperate proximate the central axis Z to support a generally annular coupling body  460 . The coupling body  460  is concentric about the central axis Z. The coupling body  460  includes a coupling body orifice  465  concentric about the central axis Z and configured to accept a fastener, such as may be included in a drain stopper or the toe tap  210 . In some embodiments, the coupling body orifice  465  interfaces with the toe tap  210  such that the toe tap  210  may be removably coupled to the drain body  220 . In some embodiments, the coupling body orifice  465  is not required during the installation of the toe tap  210 , but gives an installer of the blind drain installation assembly  200  options as to which type of stopper or toe tap  210  they may prefer to use. 
     During installation of the drain body  220  and the drain coupling  230 , the coupling threads  330  and the drain body threads  430  are threaded together. This may require an amount of torque greater than can be applied without a tool. The second lattice  450  is configured to interface with a tool (e.g., tub drain wrench, etc.) such that a torque may be applied through the second lattice  450  and to the drain body  220 , assisting in threading together the drain coupling  230  and the drain body  220 . More specifically, the tool may be configured to interface with the support structures  456  such that rotation of the tool results in the rotation of the drain body  220 . The second lattice  450  is configured to withstand high torque loads without failure (e.g., separating from the drain body  220 , cracking, bending, deforming, etc.). 
     Generally speaking, the tool is configured to turn the drain body  220  and tighten the drain body threads  430  to the coupling threads  330  such that coupling threads  330  traverse up the drain body threads  430 , toward the bottom basin surface  120 . This movement is made possible by the material properties of the drain coupling  230 . 
     Referring to  FIGS. 5A, 5B and 6 , an exploded view of a partially installed blind drain installation assembly  200  is shown along with a method  600  for installing the blind drain installation assembly  200 . At  602 , the drain pipe  240  is cut such that the top drain pipe portion  245  is flush (e.g., even, level, etc.) with the floor  105 . 
     At  604 , the wash basin  100  is positioned such that the drain opening  130  is centered over (e.g., concentric about) the drain pipe  240 . 
     At  606 , the drain coupling  230  is inserted through the drain opening  130  and around the top drain pipe portion  245  such that the first flange first surface  316  interfaces with the top basin surface  110 . In some embodiments, the plurality of annular projections  313  also interface with the drain pipe  240 , further aiding in creating a watertight seal. In some embodiments, the watertight seal is a consequence of the compliant (e.g., elastomeric) material used to manufacture the drain coupling  230 . The drain coupling  230  is compliant such that the first inner surface  310  may receive a non-cylindrical drain pipe  240 . In some embodiments, the drain pipe  240  has an elliptical, hexagonal, octagonal, or otherwise non-circular cross-section. However, due to the compliance of the drain coupling  230 , a watertight seal may still be formed between the first inner surface  310  and the drain pipe  240 . In some embodiments, it may be desirable to insert the drain coupling  230  within the drain pipe  240 . 
     In some embodiments, where the top drain pipe portion  245  is below the floor  105 , it may be the case that the coupling threads  330  are also disposed below the floor  105  during installation. When the drain coupling  230  is first disposed within the drain opening  130 , the coupling threads  330  are located below the bottom basin surface  120  and above the top drain pipe portion  245 . A portion of the drain coupling  230  is disposed between the coupling threads  330  and the bottom basin surface  120 , shown as a compliant portion (e.g., rubber portion, rubber coupling portion, elastomeric portion, etc.)  504 . 
     At  608 , the drain body  220  is inserted into the drain coupling  230  such that the drain body threads  430  are resting on the coupling threads  330 . 
     At  610 , the drain body  220  is theadingly coupled to the drain coupling  230 . In some embodiments, a tool is used to threadingly couple the drain body  220  to the drain coupling  230 . When the drain body  220  and the drain coupling  230  are fully seated (e.g., the coupling threads  330  and the drain body threads  430  are tightened to a desired torque), the second flange first surface  416  interfaces with the first flange third surface  320  such that the first flange  314  is squeezed between the second flange  414  and the top basin surface  110 , acting as a rubber washer. The squeezing of the first flange  314  creates a watertight seal between the second flange  414  and the top basin surface  110 . 
     When the drain body threads  430  are threaded to the coupling threads  330 , the coupling threads  330  translate up, in a direction generally toward the bottom basin surface  120  along the central axis Z. Further, the first lower end  306  slides up the drain pipe  240  toward the bottom basin surface  120  without jeopardizing the watertight seal between the drain coupling  230  and the drain pipe  240 . Meanwhile, the first flange  314  does not change position relative to the top basin surface  110 . The translational movement of the coupling threads  330  toward the bottom basin surface  120  is allowed because of the compliance of the material used to manufacture the drain coupling  230 . The coupling threads  330  squeeze the compliant portion  504  between the coupling threads  330  and the bottom basin surface  120 , creating a squeeze bulge  508 . The squeeze bulge  508  is configured to interface with the bottom basin surface  120  to secure the drain coupling  230  to the wash basin  100 . The squeeze bulge  508  has a squeeze diameter D SQ  that is wider than both the drain opening diameter D 1  and the third diameter D 3 . The squeeze bulge  508  cooperates with the compliant portion  504  to hold the drain body  220  within the drain coupling  230 , preventing movement of the drain body  220 , and likewise the blind drain installation assembly  200 , in a direction generally along the central axis Z. 
     At  612 , after the drain body  220  is threaded to the drain coupling  230 , the toe tap  210  may be operably coupled to the drain body  220 . The toe tap  210  may include a projection, shown as a toe tap fastener  510 . The toe tap fastener  510  may be threaded. The toe tap fastener  510  is positioned to be concentric about the central axis Z. The toe tap fastener  510  is configured to be threaded to the coupling body orifice  465 . The toe tap  210  is configured to interface with the drain body  220  such that the toe tap  210  can be positioned to selectively prevent a flow of water from flowing through the drain body  220 , and likewise preventing a flow of water from flowing through the drain pipe  240 . The toe tap  210  may be configured to be positioned to control a flow rate of a flow of water through the drain pipe  240 . The toe tap  210  is also configured to prevent large foreign objects (e.g., rings, marbles, hair, soot, pills, etc.) from passing through the drain body  220  while still allowing water to flow through. In some embodiments, the toe tap  210  is configured to only allow water and other liquids with similar properties (e.g., drain cleaner, liquid soap, etc.) to pass through the drain body  220 , and likewise the drain pipe  240 . 
     Turning now to  FIG. 7 , a blind drain installation assembly  700  is shown, according to an example embodiment. The blind drain installation assembly  700  includes a drain body  720 , a fastener  725 , and a drain coupling  730 . In some embodiments, the blind drain installation assembly also includes the toe tap  210 . The blind drain installation assembly  700  is similar to the blind drain installation assembly  200 . A difference between the blind drain installation assembly  200  and the blind drain installation assembly  700  is that the blind drain installation assembly  700  uses the fastener  725  to couple the drain body  720  to the drain coupling  730 . 
     Referring to  FIG. 8A , the drain coupling  730  is shown. The drain coupling  730  is similar to the drain coupling  230 . A difference between the drain coupling  730  and the drain coupling  230  is that the drain coupling  730  includes an annular flange, shown as a first lattice  840 , configured to cooperate with the fastener  725  and the drain body  720  to couple the drain body  720  to the drain coupling  730 . 
     The drain coupling  730  includes a generally annular first body  802  having a first upper end  804 , a first lower end  806 , a first outer surface  808 , and a first inner surface  810 . The first outer surface  808  and the first inner surface  810  may be concentric about the central axis Z. The first inner surface  810  defines an orifice (e.g., a flow path, etc.), shown as a coupling opening  812  configured to accept the drain pipe  240  and the drain body  720 . The first inner surface  810  is configured to interface with the drain pipe  240  to provide a sealant such that a water-tight seal is formed between the drain coupling  730  and the drain pipe  240 . The drain coupling  730  may include a plurality of annular projections  813  extending laterally away from the first inner surface  810  and toward the central axis Z. As shown in  FIG. 8B , the plurality of annular projections  813  are disposed between the first lower end  806  and approximately half-way between the first lower end  806  and the first upper end  804 . The plurality of annular projections  813  may be integrally manufactured to the drain coupling  730 . In some embodiments, the plurality of annular projections  813  are manufactured separately and later coupled to the drain coupling  730 . The drain coupling  730  may be formed from a compressible material (e.g., neoprene, rubber, elastomer, etc.) or other suitable material configured to provide sealing engagement between the first inner surface  810  and the drain pipe  240 . In some embodiments, the drain coupling  730  may be coupled to the drain pipe  240  such that the drain coupling  730  stays in place relative to the drain pipe  240  as the wash basin  100  is moved around relative to the drain pipe  240 . 
     Proximate the first lower end  806 , the first inner surface  810  has a tenth diameter D 10 . The first inner surface  810  may maintain a circular cross-section of the tenth diameter D 10  extending from the first lower end  806  to the first upper end  804 . In some embodiments, the diameter of the first inner surface  810  proximate the first upper end  804  is different (e.g., greater, lesser, etc.) than the tenth diameter D 10 . The first inner surface  810  is configured to accept the drain body  720 . The first inner surface  810  is also configured to allow a flow of water to pass through.  FIG. 8C  shows a generally circular coupling opening  812 , although according to other embodiments, the coupling opening  812  may be elliptical, hexagonal, octagonal, or otherwise similar to the shape of the drain pipe  240 . Proximate the first lower end  806 , the first outer surface  808  has an eleventh diameter D 11 . The first outer surface  808  maintains a circular cross-section of the eleventh diameter D 11  extending from the first lower end  806  to the first upper end  804 . In some embodiments, the first outer surface  808  proximate the first lower end  806  and the first upper end  804  has different diameters. The eleventh diameter D 11  is smaller than both the drain opening diameter D 1  and the floor opening diameter D 0 . 
     A generally annular first flange  814  extends laterally outwardly from (e.g., orthogonally to) the first outer surface  808 . As shown in  FIG. 8B , the first flange  814  extends from the first upper end  804  of the first body  802 . In some embodiments, the first flange  814  may extend outwardly from the first outer surface  808  at other heights such that at least a portion of the first body  802  extends above the first flange  814  (e.g., between the first flange  814  and the first upper end  804 ). The first flange  814  has a twelfth diameter D 12 . The twelfth diameter D 12  is greater than the drain opening diameter D 1 . The first flange  814  is configured to interface with the top basin surface  110  to form a watertight seal such that a flow of water is not able to exist between the top basin surface  110  and the first flange  814 . 
     The first flange  814  includes a first flange first surface  816 , a first flange second surface  818 , and a first flange third surface  820 . The first flange first surface  816  is disposed at an underside of the first flange  814  and is configured to cooperate and interface with the top basin surface  110  such that a water-tight seal is created between the first flange  814  and the top basin surface  110 . The first flange first surface  816  extends laterally outwardly from and is generally perpendicular to and contiguous with the first outer surface  808 . In some embodiments, the first flange first surface  816  projects outwardly from the first outer surface  808  at an angle that is not perpendicular. The first flange second surface  818  is contiguous with the first flange first surface  816 . The first flange second surface  818  may be concentric about the center axis Z and may have the twelfth diameter D 12 . The first flange second surface  818  may be parallel with the first outer surface  808 . The first flange third surface  820  is contiguous with the first flange second surface  818  and may be parallel to the first flange first surface  816 . The first flange third surface  820  is disposed proximate the first upper end  804 . The first flange third surface  820  is configured to interface with a portion of the drain body  720  to create a watertight seal between the drain coupling  730  and the drain body  720  such that a flow of water is prevented from flowing between the first flange third surface  820  and the drain body  720 . The first flange third surface  820  is contiguous with the first inner surface  810 . The first flange third surface  820  and the first inner surface  810  may meet at a corner. In some embodiments, the corner is chamfered (e.g., filleted, rounded, blunted, etc.) such that the transition between the first flange third surface  820  and the first inner surface  810  is uninterrupted (e.g., smooth, rounded, etc.). 
     The drain coupling  730  further includes a generally annular flange, shown as a first lattice  840 . The first lattice  840  is similar to the coupling threads  330 . A difference between the first lattice  840  and the coupling threads  330  is that the first lattice  840  is configured to accept the fastener  725 . The first lattice  840  extends orthogonally away from the first inner surface  810  and is disposed approximately half-way between the first lower end  806  and the first upper end  804 . In some embodiments, the plurality of annular projections  813  are disposed between the first lattice  840  and the first lower end  806 . The first lattice  840  may be manufactured from brass, steel, aluminum, plastic, titanium, rubber, or similar materials. The first lattice  840  may be manufactured into the first inner surface  810  such that the drain coupling  730  and the first lattice  840  are a single body (e.g., all one piece, etc.). In some embodiments, the first lattice  840  is manufactured separately from the drain coupling  730  and later coupled to the drain coupling  730  by over-molding, fasteners, interference fit, friction, adhesives, glue, or by similar coupling means. 
     The first lattice  840  includes a generally planar top first lattice surface  842  and a generally planar bottom first lattice surface  844 . Extending through both the top first lattice surface  842  and the bottom first lattice surface  844  may be a plurality of holes configured to allow a flow of water to pass through the drain coupling  730 . As shown in  FIG. 8C , the first lattice  840  may include a plurality of support structures  846  that extend laterally away from the first inner surface  810  and toward the central axis Z. The plurality of support structures  846  are configured to allow a flow of water to pass through the drain coupling  730 . The plurality of support structures  846  cooperate proximate the central axis Z to form a first coupling body  850 . The first coupling body  850  includes a first orifice  855  concentric about the central axis Z and configured to receive the fastener  725 . During the installation of the blind drain installation assembly  700 , the fastener will extend through the drain body  720  and threadingly couple to the drain coupling  730  via the first orifice  855 . Prior to threading the fastener  725  into the first orifice  855 , an adhesive (e.g., thread sealant, thread bond, thread lock, etc.) may be applied to the fastener  725 . 
     The drain coupling  730  may further include a plurality of holes (e.g., orifices, openings, etc.) shown as coupling holes  860 . The coupling holes  860  extend through the first inner surface  810  and the first outer surface  808  such that the drain coupling  730  is in fluid communication with the overflow channel  140  when the drain coupling  730  is installed in the drain opening  130 . Each one of the coupling holes  860  is defined by an annular coupling hole surface  862  that is contiguous with both the first inner surface  810  and the first outer surface  808 . In some embodiments, the drain coupling  730  does not include the coupling holes  860 . For example, coupling holes  860  may not be advantageous for use in an alternative wash basin  100  that does not include the overflow channel  140  or a similar overflow channel. 
     Turning to  FIG. 9A , the drain body  720  is shown according to an example embodiment. The drain body  720  is similar to the drain body  220 . A difference between the drain body  720  and the drain body  220  is that the drain body  720  is coupled to the drain coupling  730  using a fastener, such as the fastener  725 . 
     The drain body  720  includes a generally annular second body  902  having a second upper end  904 , a second lower end  906 , a second outer surface  908 , and a second inner surface  910 . The second outer surface  908  and the second inner surface  910  are concentric about the central axis Z. The second inner surface  910  defines a drain body opening  912  having a thirteenth diameter D 13  proximate the second lower end  906 . The drain body opening  912  maintains a circular cross-section of the thirteenth diameter D 13  extending between the second upper end  904  and the second lower end  906 . The second outer surface  908  maintains a circular cross-section of a fourteenth diameter D 14  extending between the second upper end  904  and the second lower end  906 . The fourteenth diameter D 14  is less than the tenth diameter D 10 . 
     The drain body  720  further includes a generally annular second flange  914  extending laterally outwardly from (e.g., orthogonal to) the second outer surface  908 . As shown in  FIG. 9B , the second flange  914  extends outwardly from the second upper end  904 . In some embodiments, the second flange  914  may extend from the second outer surface  908  at other heights such that a portion of the second body  902  extends above the second flange  914  (e.g., between the second flange  914  and the second upper end  904 .) The second flange  914  has a fifteenth diameter D 15 . The fifteenth diameter D 15  may be generally equal to the twelfth diameter D 12 . The fifteenth diameter D 15  is greater the drain opening diameter D 1 . 
     The second flange  914  includes a second flange first surface  916 , a second flange second surface  918 , and a second flange third surface  920 . The second flange first surface  916  is contiguous with and concentric about the second outer surface  908 . In some embodiments, the second flange first surface  916  is perpendicular to the second outer surface  908 . In other embodiments, the second flange first surface  916  meets the second outer surface  908  at an angle other than perpendicular. In some embodiments, the transition from second flange first surface  916  to the second outer surface  908  is rounded. This rounded interface between the second outer surface  908  and the second flange first surface  916  may assist in biasing the first flange  814  toward the surfaces defining the drain opening  130  to create a watertight seal between the top basin surface  110 , the first flange  814 , and the second flange  914 . 
     The second flange first surface  916  is contiguous with the second flange second surface  918 . The second flange second surface  918  may be concentric about the central axis Z. The second flange second surface  918  is contiguous with the second flange third surface  920 . The second flange third surface  920  may meet the second flange first surface  916  at a corner such that there is no second flange second surface  918 . In some embodiments, the second flange second surface  918  is chamfered such that the transition between the second flange first surface  916  and the second flange third surface  920  is smooth (e.g., rounded, uninterrupted, etc.). The second flange third surface  920  is also contiguous with the second inner surface  910 . The second flange third surface  920  may be perpendicular to and concentric about the second inner surface  910 . In some embodiments, where the second flange third surface  920  and the second inner surface  910  meet may be chamfered such that the transition from the second flange third surface  920  to the second inner surface  910  is uninterrupted by a sharp corner or similar discontinuity (e.g., smooth, rounded, continuous, etc.). 
     The drain body  720  further includes a generally annular flange, shown as a second lattice  940 . The second lattice  940  extends laterally away from the second inner surface  910  and toward the central axis Z. As shown in  FIG. 9B , the second lattice  940  extends inwardly from the second lower end  906 . In some embodiments, the second lattice  940  is disposed at a different height, such that a portion of the second inner surface  910  is disposed between the second lattice  940  and the second lower end  906 . The second lattice  940  includes a generally planar top second lattice surface  942  and a generally planar bottom second lattice surface  944 . The top second lattice surface  942  is contiguous with the second inner surface  910 , and the bottom second lattice surface  944  is contiguous with the second outer surface  908 . 
     Extending through both the top second lattice surface  942  and the bottom second lattice surface  944  may be a plurality of openings configured to allow a flow of water to pass through the drain body  720 , and likewise the drain coupling  730 . As shown in  FIG. 9C , the second lattice  940  may include a plurality of support structures  946  configured to extend laterally inward from the second inner surface  910  and toward the central axis Z. The plurality of support structures  946  are configured to allow a flow of water to pass through the drain body  720 , such as a flow of water from the wash basin  100 . 
     The plurality of support structures  946  is configured to cooperate proximate the central axis Z to support a generally annular second coupling body  950 , shown in portion B of  FIG. 9B . The second coupling body  950  is concentric about the central axis Z. The second coupling body  950  is configured to interface with the first lattice  840  when the drain body  720  and the drain coupling  730  are coupled together, acting as a spacer. In some embodiments, the second coupling body  950  extends into the first lattice  840 , helping to align the second coupling body  950  concentrically about the first orifice  855 . In some embodiments, the second coupling body  950  has a non-circular cross-section (e.g., square, ellipse, hexagonal, etc.) configured to extend into the first lattice  840  and prevent rotation of the drain body  720  relative to the drain coupling  730  about the central axis Z during installation (e.g., tightening of the fastener  725 ). 
     Referring to  FIG. 9D , a zoomed-in view of the portion B of  FIG. 9B . The second coupling body  950  includes an third upper end  952 , a third lower end  954 , a third outer surface  956 , and a third inner surface  958 . As shown, the third lower end  954  extends below the bottom second lattice surface  944 . In some embodiments, the third lower end  954  is flush with the bottom second lattice surface  944 . In other embodiments, the third lower end  954  is disposed above the bottom second lattice surface  944  such that the third lower end  954  is depressed within the second lattice  940  at a height above the bottom second lattice surface  944 . In embodiments, such as embodiments where the second lattice  940  is disposed at a height above the second lower end  906  such that a portion of the second inner surface  910  is disposed between the second lower end  906  and the second lattice  940 , the third lower end  954  may extend below the bottom second lattice surface  944 , but above the second lower end  906 . 
     The third upper end  952  may extend above the top second lattice surface  942  such that the third upper end  952  creates a projection (e.g., bump, etc.) on the second lattice  940 . In some embodiments, the third upper end  952  is flush with top second lattice surface  942  such that there is no depression or bump. In some embodiments, the third upper end  952  may be disposed below the top second lattice surface  942  such that a depression is made in the second lattice  940 . 
     The second coupling body  950  further includes an annular orifice concentric about the central axis Z that is defined by the third inner surface  958 . The third inner surface  958  includes a third inner first portion  960  and a third inner second portion  962 . The third inner first portion  960  is threaded to accept a threaded body, such as a fastener, preferably the toe tap fastener  510 . The third inner first portion  960  defines a sixteenth diameter D 16 . When the toe tap fastener  510  is threadingly coupled to the third inner first portion  960  of the second coupling body  950 , the toe tap fastener  510  rests flush with a bottom of the third inner first portion  960  (e.g., flush with a top of the third inner second portion  962 ). In some embodiments, when the toe tap fastener  510  is threadingly coupled to the second coupling body  950 , a portion of the toe tap fastener  510  extends below the third inner first portion  960  and into the cavity defined by the third inner second portion  962 . 
     Contiguous with the third inner first portion  960  is the third inner second portion  962 , concentric about the central axis Z and defining a seventeenth diameter D 17 . The seventeenth diameter D 17  is smaller than (e.g., less than, etc.) than the sixteenth diameter D 16 . The change in diameter between the third inner first portion  960  and the third inner second portion  962  aids in preventing the toe tap fastener  510  (e.g., any fastener with threads matching the pitch of the third inner first portion  960 ) from threading or extending into the third inner second portion  962 . 
     Proximate the third lower end  954  and disposed within the third inner second portion  962  is a generally annular flange, shown as a third flange  970 . The third flange  970  extends laterally away from the third inner surface  958  and inwardly toward the central axis Z. As shown in  FIG. 9D , the third flange  970  extends inwardly from the third lower end  954 . In some embodiments, the third flange  970  is disposed at a different height, such that a portion of the third inner surface  958  is disposed between the third lower end  954  and the third flange  970 . The third flange  970  defines an eighteenth diameter D 18 . The eighteenth diameter D 18  is smaller than the seventeenth diameter D 17 . The third flange  970  and the third inner second portion  962  cooperate to accept a fastener head, such as a head of the fastener  725 . As shown in  FIG. 9E , the fastener  725  includes a fastener head  980 , a fastener shank  982 , and fastener threads  984 . The fastener head  980  has a diameter greater than the eighteenth diameter D 18  such that the fastener head  980  rests on the third flange  970  and does not fall through the second coupling body  950  during installation and use. The fastener shank  982  may interface with the third flange  970 . As shown in  FIG. 9D , the third flange  970  is tapered toward the central axis Z, shown as a taper  964 , giving the third flange  970  a frustoconical shape, changing from the seventeenth diameter D 17  nearer the third inner second portion  962  to the eighteenth diameter D 18  proximate the third lower end  954 . In some embodiments, the third flange  970  is not tapered, but instead has a flat top surface extending perpendicularly away from the third inner surface  958  of the third inner second portion  962 . In such an embodiment, it may be preferable to use a fastener with a button head or pan head. Generally, the third flange  970  is configured to accept the head of a fastener and position the head of the fastener below the third inner first portion  960  and within the third inner second portion  962 . 
     The drain body  720  may further include overflow openings  990 . The overflow openings  990  may extend through the second outer surface  908  and the second inner surface  910  such that a flow of water may exit the drain body  720  through the overflow openings  990 . The overflow openings  990  are positioned at a height relative to the second flange  914  such that the overflow openings  990  are in fluid communication with the coupling holes  860  when the blind drain installation assembly  700  is installed. Each one of the overflow openings  990  is defined by an annular coupling hole surface  992  that is contiguous with both the second inner surface  910  and the second outer surface  908 . 
     Turning to  FIG. 10A, 10B, and 11 , an exploded view of the installation process of the blind drain installation assembly  700  is shown along with a method  1100  of installing the blind drain installation assembly  700 . The method  1100  is similar to the method  600 . A difference between the two methods is that in method  1100 , the drain body  720  is coupled to the drain coupling  730  using a fastener, such as the fastener  725 . 
     To begin installation, at  1102 , the drain pipe  240  that extends through the floor opening  107  is cut such that the top drain pipe portion  245  is flush with the top of the floor  105 . At  1104 , the wash basin  100  is then positioned on the floor  105  and above the drain pipe  240  such that the drain pipe  240  and the drain opening  130  are lined up (e.g., concentric about each other). 
     At  1106 , the drain coupling  730  is extended through the drain opening  130  and positioned around the drain pipe  240 . The drain coupling  730  extends through the floor opening  107  and below the floor  105 . The first lattice  840  is positioned between the drain opening  130  and the top drain pipe portion  245 . In some embodiments, the top drain pipe portion  245  may be disposed below the floor  105 . In such embodiments, the first lattice  840  may be positioned below the floor  105 . The first flange  814  rests on the top basin surface  110  such that the drain coupling  730  does not fall through the drain opening  130 . 
     At  1108 , the drain body  720  is disposed within the drain coupling  730  such that the second flange  914  rests on top of the first flange  814 . Further, the second coupling body  950  is positioned to be concentric about the first orifice  855 . In some embodiments, the second coupling body  950  extends into the first lattice  840  to aid in the alignment of the second coupling body  950  with the first orifice  855 . In some embodiments, the second coupling body  950  has a non-circular cross-section (e.g., square, ellipse, hexagonal, etc.) and extends into the first lattice  840  such that the rotation of the drain body  720  is prevented relative to the drain coupling  730  during installation. 
     At  1110 , the fastener  725  is inserted through the second coupling body  950 . At  1112 , the fastener  725  is threadingly coupled to the first orifice  855 . As shown in  FIG. 10A and 10B , during the threading of the fastener  725 , the first lattice  840  traverses up the fastener threads  984  along the central axis Z. The first lower end  806  also slides up the drain pipe  240  and toward the bottom basin surface  120  without jeopardizing the watertight seal between the drain coupling  730  and the drain pipe  240 . This translational motion along the central axis Z is also a result of the malleability of the drain coupling  730 . When the fastener  725  is fully threaded (e.g., torqued, seated, tight, etc.), a portion  1004  (e.g., squeeze portion) of the drain coupling  730  between the first lattice  840  and the bottom basin surface  120  is deformed, creating a generally annular squeeze bulge  1008  with a squeeze diameter D SQ . The squeeze diameter D SQ  is larger than the drain opening diameter D 1  to prevent translational movement of the blind drain installation assembly  700  relative to the drain pipe  240  along the central axis Z. In some embodiments, the side walls of the drain coupling  730  at the portion  1004  are thinned out to facilitate formation of the squeeze bulge  1008 . 
     As shown in  FIG. 10B , the fastener  725  is fully seated when the second coupling body  950  interfaces with the first lattice  840 . In some embodiments, a spring washer may be disposed between the second coupling body  950  and the first lattice  840  to prevent backing out of the fastener  725 . In other embodiments, the elasticity of the squeeze bulge  1008  provides enough tension to prevent the fastener  725  from loosening. In some embodiments, the toe tap fastener  510  prevents the fastener  725  from backing out, similar to how a lock nut behaves. 
     At  1114 , the toe tap  210  is operably coupled to the drain body  720 . In some embodiments, the toe tap includes the toe tap fastener  510 , configured to threading couple to the third inner first portion  960  of the second coupling body  950  of the drain body  720 . 
     Turning now to  FIG. 12 , a blind drain installation assembly  1200  is shown, according to an example embodiment. The blind drain installation assembly  1200  includes a drain body  1220  and a drain coupling  1230 . In some embodiments, the blind drain installation assembly  1200  also includes the toe tap  210 . The blind drain installation assembly  1200  is similar to the blind drain installation assembly  200 . A difference between the blind drain installation assembly  200  and the blind drain installation assembly  1200  is that the blind drain installation assembly  1200  uses a latch assembly and an installation fixture to couple the drain body  1220  to the drain coupling  1230 . In some embodiments, the drain body  1220  is coupled to the drain coupling  1230  through over-molding, adhesives, fasteners, friction fit, cold-welding, or similar coupling means. In some embodiments, the drain body  1220  and the drain coupling  1230  are formed in a single, integral body, through methods such as injection molding, die-casting, 3D printing, or similar manufacturing means. 
     Referring to  FIG. 13A , the drain coupling  1230  is shown. The drain coupling  1230  is similar to the drain coupling  230 . A difference between the drain coupling  1230  and the drain coupling  230  is that the drain coupling  1230  is configured to be inserted into the drain pipe  240 . 
     The drain coupling  1230  includes a generally annular first body  1302  having a first upper end  1304 , a first lower end  1306 , a first outer surface  1308 , and a first inner surface  1310 . The first outer surface  1308  and the first inner surface  1310  may be concentric about the central axis Z. The first outer surface  1308  may be configured to interface with the drain pipe  240  to provide a sealant such that a water-tight seal is formed between the drain coupling  1230  and the drain pipe  240 . In some embodiments, the drain coupling  1230  is configured to be inserted into (e.g., received by) the drain pipe  240 . The first outer surface  1308  may include a plurality of annular projections  1313  extending laterally away from the first outer surface  1308 . As shown in  FIG. 13B , the plurality of annular projections  1313  are disposed between the first lower end  1306  and approximately half-way between the first lower end  1306  and the first upper end  1304 . The plurality of annular projections  1313  may be integrally manufactured to the drain coupling  1230 . In some embodiments, the plurality of annular projections  1313  are manufactured separately and later coupled to the drain coupling  1230 .The first inner surface  1310  may define a first inner surface first portion  1310   a , a first inner surface second portion  1310   b , and a drain body catch  1311 . The drain body catch  1311  is contiguous with both the first inner surface first portion  1310   a  and the first inner surface second portion  1310   b . The interface between the drain body catch  1311  and the first inner surface second portion  1310   b  may be chamfered, forming a rounded, uninterrupted transition. The drain body catch  1311  may be configured to interface with the drain body  1220  to prevent the drain body  1220  from sliding through the drain coupling  1230  and interfacing with the first inner surface first portion  1310   a . The first inner surface second portion  1310   b  defines an orifice (e.g., a flow path, etc.), shown as a coupling opening  1312  configured to accept the drain body  1220 . The drain coupling  1230  may be formed from a compressible material (e.g., neoprene, rubber, elastomer, etc.) or other suitable material configured to provide sealing engagement between the first outer surface  1308  and the drain pipe  240 . In some embodiments, the drain coupling  1230  may be coupled to the drain pipe  240  such that the drain coupling  1230  stays in place relative to the drain pipe  240  as the wash basin  100  is moved around relative to the drain pipe  240 . 
     Proximate the first lower end  1306 , the first inner surface  1310  has a nineteenth diameter D 19 . The first inner surface  1310  may maintain a circular cross-section of the nineteenth diameter D 19  extending from the first lower end  1306  to the drain body catch  1311 . In some embodiments, the diameter of the first inner surface  1310  proximate the first upper end  1304 , shown as a twentieth diameter D 20 , is greater than the nineteenth diameter D 19 . The first inner surface  1310  is configured to allow a flow of water to pass through.  FIG. 13A  shows a generally circular coupling opening  1312 , although according to other embodiments, the coupling opening  1312  may be elliptical, hexagonal, octagonal, or otherwise similar to the shape of the drain body  1220 . Proximate the first lower end  1306 , the first outer surface  1308  has a twenty-first diameter D 21 . The first outer surface  1308  may maintain a circular cross-section of the twenty-first diameter D 21  extending from the first lower end  1306  to the first upper end  1304 . In some embodiments, the first outer surface  1308  proximate the first upper end  1304  defines a diameter, shown as a twenty-second diameter D 22 . The twenty-first diameter D 21  may be smaller than (e.g., less than) the drain opening diameter D 1 , the floor opening diameter D 0 , and the twenty-second diameter D 22 . In some embodiments, the drain coupling  1230  may have a taper, shown as a taper  1308   a , proximate the first lower end  1306 , tapering between the nineteenth diameter D 19  and the twenty-first diameter D 21 . In some embodiments, the taper  1308   a  is continuous and gradual. In other embodiments, as shown in  FIG. 13B , the taper  1308   a  may be interrupted by a lip configured to interface with a flange of the drain pipe  240 . The taper  1308   a  may help direct the drain coupling  1230  into the drain pipe  240  during installation. During installation, the installer may not be able to see the drain pipe  240  and must rely on feel (e.g., tactic feedback, trail-and-error, etc.) to insert the drain coupling  1230  into the drain pipe  240 . The taper  1308   a  provides a margin of error to the installer, allowing the drain coupling  1230  to slide into the drain pipe  240  even if the drain coupling  1230  is slightly off-center (e.g., not concentric, but only just) while the installer feels around for the drain pipe  240 . 
     The drain coupling may further include a stop lip  1308   b  configured to interface with the drain pipe top  245  to prevent the drain coupling  1230  from sliding too deeply within the drain pipe  240 . The stop lip  1308   b  may serve to transition the first outer surface  1308  between the twenty-first diameter D 21  and the twenty-second diameter D 22 . The stop lip  1308   b  may be structured to sit on top of the drain pipe  240  during installation. In some embodiments, the stop lip  1308   b  defines little more than a change in thickness of the drain coupling  1230 . While the portion of the drain coupling  1230  inserted into the drain pipe  240  may have one thickness, it may be desirable for the portion of the drain coupling  1230  extending out of the drain pipe  240  to have a different, and possibly greater, thickness. Varying the thickness of the portion of the drain coupling  1230  extending out of the drain pipe  240  may affect the compliance of the drain coupling  1230 , and thus the resulting forces of a squeeze bulge of the drain coupling  1230  formed during installation. 
     The drain coupling  1230  may further include generally annular first flange  1314  extending laterally outwardly from (e.g., orthogonally to) the first outer surface  1308 . As shown in  FIG. 13B , the first flange  1314  extends from the first upper end  1304  of the first body  1302 . In some embodiments, the first flange  1314  may extend outwardly from the first outer surface  1308  at other heights such that at least a portion of the first body  1302  extends above the first flange  1314  (e.g., between the first flange  1314  and the first upper end  1304 ). The first flange  1314  has a twenty-third diameter D 23 . The twenty-third diameter D 23  may be greater than the drain opening diameter D 1 . The first flange  1314  is configured to interface with the top basin surface  110  to form a watertight seal such that a flow of water is not able to exist between the top basin surface  110  and the first flange  1314 . 
     The first flange  1314  includes a first flange first surface  1316 , a first flange second surface  1318 , and a first flange third surface  1320 . The first flange first surface  1316  is disposed at an underside of the first flange  1314  and is configured to cooperate and interface with the top basin surface  110  such that a water-tight seal is created between the first flange  1314  and the top basin surface  110 . The first flange first surface  1316  extends laterally outwardly from and is generally perpendicular to and contiguous with the first outer surface  1308 . In some embodiments, the first flange first surface  1316  projects outwardly from the first outer surface  1308  at an angle that is not perpendicular. The first flange second surface  1318  is contiguous with the first flange first surface  1316 . The first flange second surface  1318  may be concentric about the center axis Z and may have the twenty-third diameter D 23 . The first flange second surface  1318  may be parallel with the first outer surface  1308 . The first flange third surface  1320  is contiguous with the first flange second surface  1318  and may be parallel to the first flange first surface  1316 . The first flange third surface  1320  is disposed proximate the first upper end  1304 . The first flange third surface  1320  is configured to interface with a portion of the drain body  1220  to create a watertight seal between the drain coupling  1230  and the drain body  1220  such that a flow of water is prevented from flowing between the first flange third surface  1320  and the drain body  1220 . The first flange third surface  1320  is contiguous with the first inner surface  1310 . The first flange third surface  1320  and the first inner surface  1310  may meet at a corner. In some embodiments, the corner is chamfered (e.g., filleted, rounded, blunted, etc.) such that the transition between the first flange third surface  1320  and the first inner surface  1310  is uninterrupted (e.g., smooth, rounded, etc.). 
     The drain coupling  1230  may further include a generally annular second flange, shown as a centering ring  1324 , extends laterally outwardly from (e.g., orthogonally to) the first outer surface  1308  and defines a twenty-fourth diameter D 24 . As shown in  FIG. 13B , the centering ring  1324  is proximate the first upper end  1304 , but is positioned below the first flange  1314  such that at least a portion of the first body  1302  extends between the first flange  1314  and the centering ring  1324 . The centering ring  1324  is structured to interface with the drain opening  130  to center the drain coupling  1230  about the central axis Z within the drain opening  130 . In some embodiments, when the drain coupling  1230  is installed, the centering ring  1324  is disposed between the top basin surface  110  and the bottom basin surface  120 . The inherent compliance of the centering ring  1324  allows the centering ring  1324  to conform to drain openings of various sizes. For example, suppose the drain opening  130  defines a diameter (e.g., D 1 ) equal to the twenty-fourth diameter D 24 . In such a case, the centering ring  1324  would serve to center the drain coupling  1230  within the drain opening  130 . Attempted movement of the drain coupling  1230  off-center would be inhibited by the compliant nature of the centering ring  1324 . In another example, suppose the drain opening  130  defines a diameter (e.g., D 1 ) approximately equal to the twenty-second diameter D 22 . In such an embodiment, the centering ring  1324  may be biased toward the center axis Z and within a ring cavity  1325 , biased by the drain opening  130 . The ring cavity  1325  provides clearance to the centering ring  1324  to avoid situations where an installer may need to remove the centering ring  1324  before installing the drain coupling  1230  to fit into a drain opening (e.g., the drain opening  130 ) having little to no clearance for the centering ring  1324 . In embodiments where the drain opening  130  defines a diameter between the two extremes defined above (e.g., D 1  is between D 24  and D 22 ), the compliance of the centering ring  1324  may bias the drain coupling  1230  to be concentric about the central axis Z. In some embodiments, the drain coupling  1230  may include more than one centering ring  1324  and more than one ring cavity  1325 . 
     The drain coupling  1230  further includes a generally annular flange, shown as a first lattice  1340 . The first lattice  1340  is similar to the first lattice  840 . A difference between the first lattice  1340  and the first lattice  840  is that the first lattice  1340  is configured to cooperate with a nut to couple a latch body to the first lattice  1340 . The first lattice  1340  extends orthogonally away from the first inner surface  1310  and may be disposed approximately half-way between the first lower end  1306  and the first upper end  1304 . In some embodiments, the first lattice  1340  is positioned nearer the first upper end  1304  than the first lower end  1306 . In some embodiments, the annular projections  1313  extend between the first lower end  1306  and the first lattice  1340 . In some embodiments, the stop lip  1308   b  is positioned nearer the first lower end  1306  than the first lattice  1340 . This structure may be desirable to prevent the first lattice  1340  from being disposed within the drain pipe  240 , preventing undue stress on the first lattice  1340  that may be caused as a result of improperly forcing the first lattice  1340  within the drain pipe  240 . In some embodiments, the position of the stop lip  1308   b  may not depend upon the positon of the first lattice  1340 . The first lattice  1340  may be manufactured from brass, steel, aluminum, plastic, titanium, rubber, or similar materials. The first lattice  1340  may be manufactured into the first inner surface  1310  such that the drain coupling  1230  and the first lattice  1340  are a single body (e.g., all one piece, etc.). In some embodiments, the first lattice  1340  is manufactured separately from the drain coupling  1230  and later coupled to the drain coupling  1230  by over-molding, fasteners, interference fit, friction, adhesives, glue, or by similar coupling means. 
     As shown in  FIG. 13C , the drain coupling  1230  may further include a projection, shown as a first fixture projection  1350 . The first fixture projection  1350  may define a first fixture projection first portion  1352 , a first fixture projection second portion  1354 , and a first fixture projection seat portion  1356 . The first fixture projection  1350  is configured to interface with the drain body  1220  and may prevent rotation of the drain body  1220  about the central axis Z relative to the drain coupling  1230 . As shown, the first fixture projection  1350  has an asymmetrical profile (e.g., the first fixture projection first portion  1352  is not a mirror image of the first fixture projection second portion  1354 ). The asymmetrical profile assists the installer of the blind drain installation assembly  1200  during the installation process. As a result of the asymmetrical profile, the drain body  1220  will only be properly set (e.g., sit flush against the drain body catch  1311 ) in a single position, the first fixture projection  1350  acting as a fixture to properly align the drain body  1220  within the drain coupling  1230 . As shown, the drain coupling  1230  includes a first overflow aperture  1365  off-set to one side of the drain coupling  1230 . The first fixture projection  1350  may align the drain body  1220  within the drain coupling  1230  such that the first overflow aperture  1365  of the drain coupling  1230  is aligned with (e.g., in fluid communication with) an overflow aperture of the drain body  1220 . In some embodiments, the first fixture projection  1350  has a symmetrical profile, allowing the drain body  1220  to be seated within the drain coupling  1230  in two orientations, 180 rotational degrees different. In some embodiments, the drain coupling  1230  does not include a fixture projection, allowing the drain body  1220  to be seated within the drain coupling  1230  in one of the many positions possible without the inclusion of such a fixture projection. 
     As shown in  FIG. 13D , the drain coupling  1230  may further include a projection, shown as a second fixture projection  1360 . The second fixture projection  1360  may define a second fixture projection first portion  1362 , a second fixture projection second portion  1364 , and a second fixture projection seat portion  1366 . The second fixture projection  1360  is configured to interface with the drain body  1220  and may prevent rotation of the drain body  1220  about the central axis Z relative to the drain coupling  1230 . As shown, the second fixture projection  1360  has an asymmetrical profile (e.g., the second fixture projection first portion  1362  is not a mirror image of the second fixture projection second portion  1364 ). The asymmetrical profile assists the installer of the blind drain installation assembly  1200  during the installation process. As a result of the asymmetrical profile, the drain body  1220  will only be properly set (e.g., sit flush against the drain body catch  1311 ) in a single position, the second fixture projection  1360  acting as a fixture to properly align the drain body  1220  within the drain coupling  1230 . As shown, the drain coupling  1230  includes a first overflow aperture  1365  off-set to one side of the drain coupling  1230 . The second fixture projection  1360  may align the drain body  1220  within the drain coupling  1230  such that the first overflow aperture  1365  of the drain coupling  1230  is aligned with (e.g., in fluid communication with) an overflow aperture of the drain body  1220 . In some embodiments, the second fixture projection  1360  has a symmetrical profile, allowing the drain body  1220  to be seated within the drain coupling  1230  in two orientations, 180 rotational degrees different. In some embodiments, the drain coupling  1230  does not include a fixture projection, allowing the drain body  1220  to be seated within the drain coupling  1230  in one of the many positions possible without the inclusion of such a fixture projection. 
     Referring now to  FIG. 14A , a close-up perspective view of the first lattice  1340  is shown, removed from the drain coupling  1230 . The first lattice  1340  defines a generally planar top first lattice surface  1342  and a generally planar bottom first lattice surface  1344 . Extending through both the top first lattice surface  1342  and the bottom first lattice surface  1344  may be a plurality of slots configured to allow a flow of water to pass through the first lattice  1340 . As shown in  FIG. 14A , the first lattice  1340  may include a first support structure  1346  and a second support structure  1347 , extending laterally away from the first inner surface  1310  and toward the central axis Z. The first support structure  1346  and the second support structure  1347  are configured to allow a flow of water to pass through the drain coupling  1230 . The first support structure  1346  and the second support structure  1347  cooperate proximate the central axis Z to form an annular first coupling body  1348 . The first coupling body  1348  defines a first orifice (hidden by nut  1368 ) concentric about the central axis Z and configured to receive a nut  1368 . The nut  1368  is configured to couple the first lattice  1340  to a compliant body, shown as a latch body  1400 . The nut  1368  may be one of a rivet nut, a heavy-duty rivet nut, a metal rivet nut, or similar fastener. The nut  1368  is concentric about the central axis Z. The nut  1368  is configured to prevent separation of the first lattice  1340  from the latch body  1400 . During installation of the drain body  1220  to the drain coupling  1230 , the nut  1368  is configured to receive an installation fixture and the toe tap  210 . 
     Turning to  FIG. 14B , the latch body  1400  is shown, removed from the first lattice  1340 . The latch body  1400  comprises a ring  1404 , a first arm  1408 , a first compliant portion  1412 , a first finger  1416 , and a first latch  1420 . The latch body  1400  may be manufactured from a single piece of metal, wood, plastic, polymer, or similar material. In some embodiments, each component of the latch body  1400  may be manufactured separately and later coupled together, forming the latch body  1400 . The ring  1404  comprises an orifice concentric about both the central axis Z and the first orifice of the first lattice  1340 , and configured to accept the nut  1368 . The top of the ring is configured to interface with the bottom first lattice surface  1344  when the nut  1368  is installed. The first arm (e.g., cantilever)  1408  includes a first arm first end  1409  and a first arm second end  1410 . The first arm first end  1409  is coupled to the ring  1404  such that the first arm  1408  extends perpendicularly away from the ring  1404  in a direction generally away from the first lattice  1340 . In some embodiments, the first arm  1408  is contiguous with the ring  1404  at a rounded corner such as to disperse stress concentrations caused at the interface between the ring  1404  and the first arm  1408  when the first arm  1408  is biased toward and away from the central axis Z. The first arm  1408  and the ring  1404  may be manufactured from a single piece of metal, plastic, polymer, wood, or similar material. 
     The first arm  1408  is also coupled to the first compliant portion  1412  proximate the first arm second end  1410 . As shown in  FIG. 14B , the first compliant portion  1412  has a U-shaped profile, facilitating movement of the first finger  1416  toward and away from the first arm  1408 . However, in some embodiments, the first compliant portion  1412  may have a zig-zag, wavy, accordion, V-shaped, or similar shaped profile to facilitate movement of the first finger  1416  toward and away from the first arm  1408 . The first compliant portion  1412  and the first arm  1408  may be manufactured from the same piece of material. 
     Extending away from the first compliant portion  1412  is the first finger  1416 . The first finger  1416  may extend perpendicularly away from the first compliant portion  1412  in a direction generally parallel to the first arm  1408 . The first finger  1416  may include a triangular base portion, shown as a first finger base  1417 . The contour of the first finger base  1417  may add rigidity to the first finger  1416  such that more force would be required to bias the first finger  1416  toward the central axis Z, and thus toward the first arm  1408 , than would be required by a finger not having a contoured finger base. The contours and the profile of the first finger base  1417  may be adjusted to meet the installation needs of the drain coupling  1230 . The first finger base  1417  may be manufactured to have a wider (e.g., thicker) profile, such as to increase the rigidity of the first finger  1416 . In some embodiments, the first finger base  1417  may be thinned (e.g., made less thick, made less wide, etc.) such as to decrease the rigidity of the first finger  1416  and lowering the amount of force required to bias the first finger  1416  toward and away from the central axis Z. 
     As shown in  FIG. 14A , the first finger  1416  extends through the first lattice  1340 . More specifically, the first lattice  1340  includes a first lattice slot  1370  configured to receive the first finger  1416  and facilitate movement of the first finger  1416  toward and away from the central axis Z. In some embodiments, the first lattice slot  1370  is defined by the first support structure  1346 , allowing the first finger  1416  to extend through the first support structure  1346 . The first finger base  1417  may be contoured such as to prevent translational movement of the first finger  1416  through the first lattice slot  1370  in a direction generally away from the first compliant portion  1412 . 
     Referring again to  FIG. 14B , the first finger  1416  also includes, opposite the first finger base  1417 , the first latch  1420 . The first latch  1420  may be integral with the first finger  1416  such that the first latch  1420  and the first finger  1416  are manufactured from the same piece of material. The first latch  1420  defines a first latch extrados  1422 , a first latch intrados  1424 , and a first latch end  1426 . The first latch extrados  1422  is configured to interface with the drain body  1220  during the Installation of the drain body  1220  to the drain coupling  1230 . As will be explained in further detail herein ( FIGS. 16A-16D ), the interaction between the drain body  1220  and the first latch extrados  1422  biases the first finger  1416  toward the central axis Z. The first latch intrados  1424  is configured to interface with the drain body  1220  to couple the drain coupling  1230  to the drain body  1220 . The first latch  1420  may be further configured to prevent the first finger  1416  from sliding through and out of the first lattice slot  1370  in a direction generally toward the first compliant portion  1412 . The first latch end  1426  extends in a direction generally toward the first finger base  1417 . 
     The latch body  1400  may further include a second arm  1428 , a second compliant portion  1432 , a second finger  1436 , and a second latch  1440 . The second arm (e.g., cantilever)  1428  includes a second arm first end  1429  and a second arm second end  1430 . The second arm first end  1429  is coupled to the ring  1404  such that the second arm  1428  extends perpendicularly away from the ring  1404  in a direction generally away from the first lattice  1340 . In some embodiments, the second arm  1428  is contiguous with the ring  1404  at a rounded corner such as to disperse stress concentrations caused at the interface between the ring  1404  and the second arm  1428  when the second arm  1428  is biased toward and away from the central axis Z. The second arm  1428  and the ring  1404  may be manufactured from a single piece of metal, plastic, polymer, wood, or similar material. 
     The second arm  1428  is also coupled to the second compliant portion  1432  proximate the second arm second end  1430 . As shown in  FIG. 14B , the second compliant portion  1432  has a U-shaped profile, facilitating movement of the second finger  1436  toward and away from the second arm  1428 . However, in some embodiments, the second compliant portion  1432  may have a zig-zag, wavy, accordion, V-shaped, or similar shaped profile to facilitate movement of the second finger  1436  toward and away from the second arm  1428 . It is not necessary for the profile of the first compliant portion  1412  to match or be the same as the profile of the second compliant portion  1432 . It may be desirable to give the second compliant portion  1432  a different profile than the first compliant portion  1412  to differentiate the amount of force required to bias the second finger  1436  from the amount of force required to bias the first finger  1416 . The second compliant portion  1432  and the second arm  1428  may be manufactured from the same piece of material. 
     Extending away from the second compliant portion  1432  is the second finger  1436 . The second finger  1436  may extend perpendicularly away from the second compliant portion  1432  in a direction generally parallel to the second arm  1428 . The second finger  1436  may include a triangular base portion, shown as a second finger base  1437 . The contour of the second finger base  1437  may add rigidity to the second finger  1436  such that more force would be required to bias the second finger  1436  toward the central axis Z, and thus toward the second arm  1428 , than would be required by a finger not having a contoured finger base. In some embodiments, the first finger base  1417  and the second finger base  1437  have different contours are profiles, allowing the first finger  1416  to demonstrate different properties (e.g., force to bias, rigidity, cycle life, etc.) than the second finger  1436 . The contours and the profile of the second finger base  1437  may be adjusted to meet the installation needs of the drain coupling  1230 . The second finger base  1437  may be manufactured to have a wider (e.g., thicker) profile, such as to increase the rigidity of the second finger  1436 . In some embodiments, the second finger base  1437  may be thinned (e.g., made less thick, made less wide, etc.) such as to decrease the rigidity of the second finger  1436  and lowering the amount of force required to bias the second finger  1436  toward and away from the central axis Z. 
     As shown in  FIG. 14A , the second finger  1436  extends through the first lattice  1340 . More specifically, the first lattice  1340  includes a second lattice slot  1372  configured to receive the second finger  1436  and facilitate movement of the second finger  1436  toward and away from the central axis Z. In some embodiments, the second lattice slot  1372  is defined by the second support structure  1347 , allowing the second finger  1436  to extend through the second support structure  1347 . The second finger base  1437  may be contoured such as to prevent translational movement of the second finger  1436  through the second lattice slot  1372  in a direction generally away from the second compliant portion  1432 . 
     Referring again to  FIG. 14B , the second finger  1436  also includes, opposite the second finger base  1437 , the second latch  1440 . The second latch  1440  may be integral with the second finger  1436  such that the second latch  1440  and the second finger  1436  are manufactured from the same piece of material. The second latch  1440  defines a second latch extrados  1442 , a second latch intrados  1444 , and a second latch end  1446 . The second latch extrados  1442  is configured to interface with the drain body  1220  during the installation of the drain body  1220  to the drain coupling  1230 . As will be explained in further detail herein ( FIGS. 16A-16D ), the interaction between the drain body  1220  and the second latch extrados  1442  biases the second finger  1436  toward the central axis Z. The second latch intrados  1444  is configured to interface with the drain body  1220  to couple the drain coupling  1230  to the drain body  1220 . The second latch  1440  may be further configured to prevent the second finger  1436  from sliding through and out of the second lattice slot  1372  in a direction generally toward the second compliant portion  1432  . The second latch end  1446  extends in a direction generally toward the second finger base  1437 . 
     Turning to  FIG. 15A , the drain body  1220  is shown according to an example embodiment. The drain body  1220  is similar to the drain body  220 . A difference between the drain body  1220  and the drain body  220  is that the drain body  1220  is coupled to the drain coupling  1230  using the latch body  1400 . 
     The drain body  1220  includes a generally annular second body  1502  having a second upper end  1504 , a second lower end  1506 , a second outer surface  1508 , and a second inner surface  1510 . The second outer surface  1508  and the second inner surface  1510  are concentric about the central axis Z. The second outer surface  1508  has a circular cross-section of a twenty-fifth diameter D 25  proximate the second upper end  1504 . The twenty-fifth diameter D 25  is approximately equal to the twentieth diameter D 20 . Generally, the drain body  1220  may be shaped to be accepted by the drain coupling  1230 . More specifically, the second outer surface  1508  may be shaped to interface with the second inner surface first portion  1310   b.    
     The drain body  1220  further includes a generally annular second flange  1514  extending laterally outwardly from (e.g., orthogonal to) the second outer surface  1508 . As shown in  FIG. 15B , the second flange  1514  extends outwardly from the second upper end  1504 . In some embodiments, the second flange  1514  may extend from the second outer surface  1508  at other heights such that a portion of the second body  1502  extends above the second flange  1514  (e.g., between the second flange  1514  and the second upper end  1504 .) The second flange  1514  has a twenty-sixth diameter D 26 . The twenty-sixth diameter D 26  may be generally equal to the twenty-third diameter D 23 . In some embodiments, the twenty-sixth diameter D 26  may be slightly greater than the twenty-third diameter D 23 . In some embodiments, the twenty-sixth diameter D 26  may be slightly less than the twenty-third diameter D 23 . The twenty-sixth diameter D 26  is greater the drain opening diameter D 1 . 
     The second flange  1514  includes a second flange first surface  1516 , a second flange second surface  1518 , and a second flange third surface  1520 . The second flange first surface  1516  is contiguous with and concentric about the second outer surface  1508 . In some embodiments, the second flange first surface  1516  is perpendicular to the second outer surface  1508 . In other embodiments, the second flange first surface  1516  meets the second outer surface  1508  at an angle other than perpendicular. In some embodiments, the transition from second flange first surface  1516  to the second outer surface  1508  is rounded. This rounded interface between the second outer surface  1508  and the second flange first surface  1516  may assist in biasing the first flange  1314  toward the surfaces defining the drain opening  130  to create a watertight seal between the top basin surface  110 , the first flange  1314 , and the second flange  1514 . 
     The second flange first surface  1516  is contiguous with the second flange second surface  1518 . The second flange second surface  1518  may be concentric about the central axis Z. The second flange second surface  1518  may extend below the second flange first surface  1516 , forming a tooth  1519 . The tooth  1519  may be structured to grip into the first flange  1314 , improving the contact between the first flange  1314  and the top basin surface  110 . The tooth  1519  may also prevent rotational motion of the drain body  1220  relative to the drain coupling  1230  during installation or regular use. In embodiments where the twenty-sixth diameter D 26  may be slightly greater than the twenty-third diameter D 23 , the tooth  1519  may direct the squeeze of the first flange  1314  downward and toward the top basin surface  110 , improving the contact between the top basin surface  110  and the first flange  1314 , and further improving the aesthetic appearance of the installed blind drain installation assembly  1200  by preventing the first flange  1314  from squeezing beyond the second flange  1514  and within sight of a viewer from within the wash basin  100 . 
     The second flange second surface  1518  is contiguous with the second flange third surface  1520 . The second flange third surface  1520  may meet the second flange first surface  1516  at a corner such that there is no second flange second surface  1518 . In some embodiments, the second flange second surface  1518  is chamfered such that the transition between the second flange first surface  1516  and the second flange third surface  1520  is smooth (e.g., rounded, uninterrupted, etc.). The second flange third surface  1520  is also contiguous with the second inner surface  1510 . The second flange third surface  1520  may be perpendicular to and concentric about the second inner surface  1510 . In some embodiments, where the second flange third surface  1520  and the second inner surface  1510  meet may be chamfered such that the transition from the second flange third surface  1520  to the second inner surface  1510  is uninterrupted by a sharp corner or similar discontinuity (e.g., smooth, rounded, continuous, etc.). 
     The drain body  1220  further includes a generally annular flange, shown as a third flange (e.g., body flange)  1540 . The third flange  1540  extends laterally away from the second inner surface  1510  and toward the central axis Z. As shown in  FIG. 15C , the third flange  1540  extends inwardly from the second lower end  1506 . In some embodiments, the third flange  1540  is disposed at a different height, such that a portion of the second inner surface  1510  is disposed between the third flange  1540  and the second lower end  1506 . The third flange  1540  includes a top third flange surface  1542  and a bottom third flange surface  1544 . The top third flange surface  1542  is contiguous with the second inner surface  1510 , and the bottom third flange surface  1544  is contiguous with the second outer surface  1508 . The bottom third flange surface  1544  is configured to interface with the drain body catch  1311  to prevent translational movement of the drain body  1220  relative to the drain coupling  1230  along the central axis Z. In some embodiments, the bottom third flange surface  1544  is textured with teeth, bumps, cuts, or similar textures to grip to (e.g., dig into, bite into etc.) the drain body catch  1311  to prevent rotational motion of the drain body  1220  relative to the drain coupling  1230 . 
     Interrupting the third flange  1540  is a first cut-out  1550  and a second cut-out  1554 . As shown in  FIG. 15C , the first cut-out  1550  has a first cut-out first portion  1551  and a first cut- out second portion  1552 . When the drain body  1220  is inserted within the drain coupling  1230 , the first cut-out  1550  interfaces with the first fixture projection  1350 , cooperating to prevent rotational motion of the drain body  1220  about the central axis Z relative to the drain coupling  1230 . Similar to the first fixture projection  1350 , the first cut-out  1550  has an asymmetrical profile. More specifically, when installed, the fixture projection first portion  1352  is disposed within the first cut-out first portion  1551  and the first fixture projection second portion  1354  is disposed within the first cut-out second portion  1552 . Positioned between the first cut-out first portion  1551  and the first cut-out second portion  1552  is a first hook  1553 . The first hook  1553  is configured to interface with the first latch  1420  of the first finger  1416  to couple the drain body  1220  to the drain coupling  1230 . 
     Referring now to  FIG. 15A , the second cut-out  1554  is similar to the first cut-out  1550 , as the second cut-out  1554  defines a second cut-out first portion  1555  and a second cut-out second portion  1556 . When the drain body  1220  is inserted within the drain coupling  1230 , the second cut-out  1554  interfaces with the second fixture projection  1360  cooperating to prevent rotational motion of the drain body  1220  about the central axis Z relative to the drain coupling  1230 . Similar to the second fixture projection  1360 , the second cut-out  1554  has an asymmetrical profile. More specifically, when installed, the second fixture projection first portion  1362  is disposed within the second cut-out first portion  1555  and the second fixture projection second portion  1364  is disposed within the second cut-out second portion  1556 . Positioned between the second cut-out first portion  1555  and the second cut-out second portion  1556  is a second hook  1557 . The second hook  1557  is configured to interface with the second latch  1440  of the second finger  1436  to couple the drain body  1220  to the drain coupling  1230 . 
     The first hook  1553  has a first hook intrados  1560 , a first hook extrados  1562 , and a first hook end  1564 . The first hook  1553  latches to (e.g., hooks onto, etc.) the first latch  1420 . Preferably, when the blind drain installation assembly  1200  is fully assembled, the first hook end  1564  interfaces with the first latch intrados  1424 , and the first latch end  1426  interfaces with the first hook intrados  1560 . However, slight variations in manufacturing may cause only one such interface to occur (e.g., the first latch end  1426  is shorter than the first hook end  1564 , causing the first hook end  1564  to interface with the first latch intrados  1424 , such that the first latch end  1426  does not interface with the first hook intrados  1560 , and vice versa). 
     Similarly, the second hook  1557  has a second hook intrados  1570 , a second hook extrados  1572 , and a second hook end  1574 . The second hook  1557  latches to (e.g., hooks onto, etc.) the second latch  1440 . Preferably, when the blind drain installation assembly  1200  is fully assembled, the second hook end  1574  interfaces with the second latch intrados  1444 , and the second latch end  1446  interfaces with the second hook intrados  1570 . However, slight variations in manufacturing may cause only one such interface to occur (e.g., the second latch end  1446  is shorter than the second hook end  1574 , causing the second hook end  1574  to interface with the second latch intrados  1444 , such that the second latch end  1446  does not interface with the second hook intrados  1570 , and vice versa). 
     In embodiments where the first fixture projection  1350  and the second fixture projection  1360  allow for the drain body  1220  to be positioned within the drain coupling  1230  in two positions, separated by 180 degrees, it may occur that the first hook  1553  interfaces with the second latch  1440  and the second hook  1557  interfaces with the first latch  1420 . 
     The drain body  1220  may further include a second overflow aperture  1580 . The second overflow aperture  1580  extends through the second inner surface  1510  and the second outer surface  1508 . The second overflow aperture  1580  may be in fluid communication with the first overflow aperture  1365  of the drain coupling  1230 . As shown in  FIG. 15A , the second overflow aperture  1580  is defined on one side of the drain body  1220  (e.g., the second overflow aperture  1580  is not mirrored by a similar aperture). During installation, it may be desirable to align the second overflow aperture  1580  with the first overflow aperture  1365 . Aligning these two apertures may be facilitated by the first fixture projection  1350  and the first cut-out  1550 . Similarly, aligning these two apertures may be facilitated through cooperation between the first fixture projection  1350  and the second fixture projection  1360 . 
     Turning now to  FIGS. 16A-16D , the installation of the blind drain installation assembly  1200  is shown. Prior to installation, the drain coupling  1230  may be assembled to include the first lattice  1340 , the nut  1368 , and the latch body  1400 . In some embodiments, the installer may receive the drain coupling  1230  fully assembled and ready for installation in the wash basin  100 . The installation of the blind drain installation assembly  1200  is similar to the installation of the blind drain installation assembly  700 . A difference between the two installations is that the blind drain installation assembly  1200  utilizes an installation fixture to couple the drain coupling  1230  to the drain body  1220 . More specifically, the installation of the blind drain installation assembly  1200  uses an installation fixture to bias the first lattice  1340  toward the drain body  1220  via the nut  1368 , pulling the first latch  1420  above the first hook  1553  and the second latch  1440  above the second hook  1557 . 
     Referring to  FIG. 16A , the drain coupling  1230  is inserted through the drain opening  130  from within the wash basin  100  (e.g., from above the top basin surface  110 ). The drain coupling  1230  is extended through the drain opening  130  and is received by the drain pipe  240  such that the first flange  1314  interfaces with the top basin surface  110 . The first flange  1314  prevents the drain coupling  1230  from falling through the drain opening  130 . The drain pipe  240  may include a drain pipe flange  1600 , extending inward, toward the central axis Z, from an inner surface of the drain pipe  240 . The drain pipe flange  1600  may interface with the drain coupling  1230  to prevent the drain coupling  1230  from sliding too far into the drain pipe  240 . The drain pipe flange  1600  may behave similarly to the stop lip  1308   b . As shown, it may not be necessary for the drain pipe flange  1600  to interface with the drain coupling  1230 . 
     Once the drain coupling  1230  is inserted such that the first flange  1314  interfaces with the top basin surface  110 , the drain body  1220  may be inserted into the drain coupling  1230 . In some embodiments, the drain body  1220  is already coupled to the drain coupling  1230 , such as by over-molding, prior to the drain coupling  1230  being inserted through the drain opening  130 . In some embodiments, the drain body  1220  may be inserted into the drain coupling  1230  such that the first fixture projection  1350  is properly seated within (e.g., is received within) the first cut-out  1550 , and the second fixture projection  1360  is properly seated within the second cut-out  1554 , aligning the drain body  1220  within the drain coupling  1230 . In some embodiments, the drain body  1220  is inserted into the drain coupling  1230  from the top side of the wash basin  100  until the third flange  1540  (e.g., the bottom third flange surface  1544 ) interfaces with the drain body catch  1311 . When properly inserted, the first hook  1553  may be proximate, and in some instances interfacing with, the first fixture projection seat portion  1356 , and the second hook  1557  may be proximate, and in some instances interfacing with, the second fixture projection seat portion  1366 . More specifically, the first hook extrados  1562  may interface with the first fixture projection seat portion  1356  and the second hook extrados  1572  may interface with the second fixture projection seat portion  1366 . In some embodiments, the drain body  1220  is fully seated when the second flange  1514  interfaces with the first flange  1314 . 
     Turning now to  FIG. 16B , after the drain coupling  1230  and the drain body  1220  are properly seated, an installation fixture  1604  is used to couple together the drain coupling  1230  and the drain body  1220 . More specifically, the installation fixture  1604  is configured to bias the latch body  1400  toward the drain body  1220  along the central axis Z such that the first latch  1420  and the second latch  1440  clip onto the third flange  1540 . In some embodiments, the installation fixture  1604  is configured to bias the latch body  1400  toward the drain body  1220  along the central axis Z such that the first latch  1420  and the second latch  1440  clip onto the first hook  1553  and the second hook  1557 , respectively. The installation fixture  1604  includes a fastener  1606  and a fixture plate  1608 . While the installation fixture  1604  described herein is an example embodiment, it should be understood that similar structures may be used in a similar fashion to couple the drain body  1220  to the drain coupling  1230  in a similar manner. The fixture plate  1608  defines an annular body having a diameter approximately equal to the twenty-sixth diameter D 26  and an orifice at the center (e.g., the fixture plate  1608  is a large metal washer). Through the orifice extends the fastener  1606 . As shown, the fastener  1606  has a shank slidingly received within the fixture plate  1608 , defining a diameter less than the orifice in the fixture plate  1608 . The fastener  1606  further includes a head with a diameter greater than the orifice, preventing the fastener  1606  from falling through the orifice. 
     The fixture plate  1608  is placed over the drain body  1220 , interfacing with the second flange  1514 . The fastener  1606  is slid through the fixture plate  1608  and threaded into the nut  1368  from above. An installer may use a tool (e.g., wrench, screwdriver, pliers, etc.) to turn the fastener  1606 , causing the nut  1368  to thread onto the fastener  1606  and transverse up the fastener  1606 , along the central axis Z, in the direction of the fixture plate  1608 . With the nut  1368  also moves the first lattice  1340  and the latch body  1400 . More specifically, the first latch  1420  moves toward the first hook  1553  and the second latch  1440  moves toward the second hook  1557 . Eventually, the first latch extrados  1422  and the first hook extrados  1562  may contact each other. The rounded profile of first hook  1553  biases the first finger  1416  toward the central axis Z as the latch body  1400  continues to travel upward, toward the fixture plate  1608 . Similarly, the second latch extrados  1442  and the second hook extrados  1572  may contact each other. The rounded profile of second hook  1557  biases the second finger  1436  toward the central axis Z as the latch body  1400  continues to travel upward, toward the fixture plate  1608 . Eventually, as the nut  1368  is further threaded up the fastener  1606 , the first latch end  1426  will interface with the first hook end  1564  and the second latch end  1446  will interface with the second hook end  1574 . Once the first latch end  1426  passes the first hook end  1564  (e.g., is traversed nearer to the top basin surface  110 , beyond the first hook end  1564  as a result of the threading of the nut  1368 ) and the second latch end  1446  passes the second hook end  1574 , the first finger  1416  will bias the first latch  1420  away from the central axis Z and the second finger  1436  will bias the second latch  1440  away from the central axis Z. The first latch end  1426  will be positioned above the first hook intrados  1560  and the second latch end  1446  will be positioned above the second hook intrados  1570 . The installer should feel a sudden drop in resistance in the turning of the fastener  1606  once the pressure is released from the first finger  1416  and the second finger  1436 . The installer may possibly hear a snap or a click when the first finger  1416  and the second finger  1436  fling into the first hook  1553  and the second hook  1557 , respectively. In some embodiments, at this point in the installation, neither the first latch  1420  nor the second latch  1440  are properly seated. At this point, the installer may reverse the fastener  1606 , causing the first latch  1420  and the second latch  1440  to move down, toward the drain pipe  240 , eventually being properly seated with the first hook  1553  and the second hook  1557 , respectively, as previously described. The installer may be able to feel when the first latch  1420  and the second latch  1440  are properly seated, as the fastener will begin to thread out of the nut  1368  and travel in a direction away from the drain pipe  240 , along the central axis Z. 
     In some embodiments, such as shown in  FIG. 16B , the drain body  1220  may not include the first hook  1553  or the second hook  1557 . Instead, the first latch  1420  and the second latch  1440  may latch onto the third flange  1540 . The third flange  1540  may be structured to act similarly to the first and second hooks  1553 ,  1557 , defining an intrados for the first latch  1420  and the second latch  1440  to latch onto, and defining an extrados to bias the first finger  1416  and the second finger  1436  toward the central axis Z as the nut  1368  is threaded up the fastener  1606  during installation. 
     The movement of the nut  1368  toward the top basin surface  110  along the central axis Z is allowed because of the compliance of the drain coupling  1230 . As the fastener  1606  is threaded into the nut  1368 , the first lattice  1340  travels up, in the direction of the top basin surface  110 , and squeezes the side walls of the drain coupling  1230  against the bottom basin surface  120 . The drain body  1220 , and more specifically the second flange  1514 , may be compressed against the first flange  1314  as a result of the compliance of the drain coupling  1230  during installation. The second flange  1514  compresses the first flange  1314  into the top basin surface  110 , forming a watertight seal between the top basin surface  110  and the first flange  1314 . In some embodiments, a watertight seal may also be formed between the second flange  1514  and the first flange  1314 . 
     Shown in  FIG. 16C  is a squeeze bulge  1610  formed by the compliance of the drain coupling  1230 . The squeeze bulge  1610  forms gradually as the fastener  1606  is threaded into the nut  1368 . The first lower end  1306  may slide up the drain pipe  240 , generally toward the wash basin  100 , as the nut  1368  is threaded onto the fastener  1606 , providing the extra slack within the drain coupling  1230  to form the squeeze bulge  1610 . The squeeze bulge  1610  defines a diameter, shown as a squeeze bulge diameter D SQ . The squeeze bulge diameter D SQ  is greater than the drain opening diameter D 1 . The squeeze bulge  1610  holds the drain coupling  1230 , and thus the drain body  1220 , within the drain opening  130 . The squeeze bulge  1610  applies a downward force on the first lattice  1340 , which applies a similar downward force on the latch body  1400 . The latch body  1400  pulls down on the drain body  1220  via the first finger  1416  and the second finger  1436 . The second flange  1514  of the drain body  1220  compresses the first flange  1314  of the drain coupling  1230  against the wash basin  100  to form a watertight seal. In short, once the first latch  1420  and the second latch  1440  are properly engaged with the drain body  1220  (e.g., the first hook  1553  and the second hook  1557 ), the installation fixture  1604  may be removed (e.g., unthreaded from the nut) without the blind drain installation assembly  1200  coming apart. 
     Turning now to  FIG. 16D , the drain coupling  1230  and the drain body  1220  are fully installed within the drain pipe  240  and the drain opening  130 . As a finishing touch, the toe tap  210  may be installed within the drain body  1220 . In some embodiments, the toe tap  210  may utilize the nut  1368  to secure the toe tap  210  within the blind drain installation assembly  1200 . Such a toe tap  210  may offer redundancy to the blind drain installation assembly  1200 , applying an upward force on the first lattice  1340  and applying a downward force on the second flange  1514 . 
     Referring to  FIG. 17A and 17B , a finger guard  1700  is shown according to an example embodiment. The finger guard  1700  is configured to prevent foreign bodies, such as a hair catcher, strainer, snare, or similar product, from catching on and dislodging the latch body  1400  from the drain body  1220  when pulled in and out of the drain body  1220 . The finger guard  1700  includes a cover portion  1702  and a cantilever portion  1704 . The cover portion  1702  includes a first cover end  1706 , and a second cover end  1708 . The cover portion  1702  is coupled to the cantilever portion  1704  proximate the second cover end  1708 . In some embodiments, the cover portion  1702  and the cantilever portion  1704  are integrally formed, such as through injection molding, 3D printing, die-casting, or similar manufacturing means. 
     Extending between the first cover end  1706  and the second cover end  1708  is a neck  1710 . The neck  1710  is configured to protect (e.g., cover) the first finger  1416  from foreign bodies. In some embodiments, the neck  1710  may interface with the first finger  1416  once the blind drain installation assembly  1200  is assembled, as shown in  FIG. 17B , to prevent the first finger  1416  from being biased toward the central axis Z and disengaging with the first hook  1553 . In some embodiments, the neck  1710  does not interface with the first finger  1416 . 
     Proximate the first cover end  1706 , the neck  1710  may be coupled to a head  1712 . The head  1712 , once installed within the blind drain installation assembly  1200 , may be configured to interface with the first latch  1420 . In some embodiments, the head  1712  interfaces with the second inner surface  1510  of the drain body  1220 , displacing the head  1712  apart from the first latch  1420  such that the head  1712  does not interface with the first latch  1420 . The interface between the head  1712  and the neck  1710  may be chamfered or rounded to provide a smooth transition. The smooth transition may serve to prevent foreign bodies from attaching to and/or dislodging the finger guard  1700  from the blind drain installation assembly  1200 . 
     Proximate the second cover end  1708 , the finger guard  1700  includes a cover base surface  1714  configured to interface with the top first lattice surface  1342  to prevent movement of the finger guard  1700  in a direction generally toward the drain pipe  240 . The finger guard  1700  also includes a cover base contour  1716  configured to dissipate stresses caused by forces on the finger guard  1700  in a direction generally toward the central axis Z. The finger guard  1700  may further include walls  1718  extending the length of the neck  1710  and the head  1712 , the walls  1718  further configured to prevent access to the first finger  1416  by foreign bodies. 
     The cantilever portion  1704  may include a first cantilever  1720  and a second cantilever  1722 . The first cantilever  1720  may include a first catch surface  1724 . The first catch surface  1724  may be configured to interface with the bottom first lattice surface  1344  to prevent movement of the finger guard  1700  in a direction generally toward the top basin surface  110 . A distance between the first catch surface  1724  and the cover base surface  1714  may be approximately equal to a thickness of the first lattice  1340 . In some embodiments, the distance between the first catch surface  1724  and the cover base surface  1714  may be slightly greater than the thickness of the first lattice  1340 , allowing for a bit of movement of the finger guard  1700  when installed. The second cantilever  1722  may include a second catch surface  1726 , similar to the first catch surface  1724  and configured to interface with the bottom first lattice surface  1344  and configured to prevent movement of the finger guard  1700  in a direction generally toward the top basin surface  110 . 
     Turning now to  FIG. 17B , the blind drain installation assembly  1200  further including the finger guard  1700 . As shown, the finger guard  1700  is positioned around the first finger  1416 . However, it should be understood that the finger guard  1700  may be positioned around both the first finger  1416  and the second finger  1436 . 
     The finger guard  1700 , when used and installed in cooperation with the blind drain installation assembly  1200 , may be installed after the installation fixture  1604  has been removed, but before the top tap  210  has been inserted within the drain body  1220 . The finger guard  1700  is inserted, from above (e.g., within the wash basin  100 ), such that the cantilever portion  1704  extends through the lattice slot  1370 . More specifically, the first cantilever  1720  and the second cantilever  1722  are biased toward one another such that both the first cantilever  1720  and the second cantilever  1722  may be extended through the lattice slot  1370 . The cantilever portion  1704  is properly set within the lattice slot  1370  when both the first catch surface  1724  and the second catch surface  1726  are biased away from one another and interface with the bottom first lattice surface  1344 . In some embodiments, the finger guard  1700  is properly set when the cover base surface  1714  interfaces with the top first lattice surface  1342 . In some embodiments, the finger guard  1700  is properly set when both of the previous conditions are met. 
     Once the finger guard  1700  is installed, the first cantilever  1720  and the second cantilever  1722  act as covers for the first compliant portion  1412 . The first cantilever  1720  and the second cantilever  1722  may serve to prevent build-up of debris from collecting on the first compliant portion  1412  and inhibiting movement of the first finger  1416 . 
     Turning to  FIG. 18 , a method  1800  of installing the blind drain installation assembly  1200  is shown. The method  1800  is similar to the method  1100 . A difference between the two methods is that in method  1800 , the drain body  1220  is coupled to the drain coupling  1230  using an installation fixture, such as the installation fixture  1604 . 
     To begin installation, at  1802 , the drain pipe  240  that extends through the floor opening  107  is cut such that the top drain pipe portion  245  is flush with the top of the floor  105 . At  1804 , the wash basin  100  is then positioned on the floor  105  and above the drain pipe  240  such that the drain pipe  240  and the drain opening  130  are lined up (e.g., concentric about each other). 
     At  1806 , the drain coupling  1230  is extended through the drain opening  130  and extended through the drain pipe  240 . The drain coupling  1230  extends through the floor opening  107  and below the floor  105 . The first lattice  1340  is positioned between the drain opening  130  and the top drain pipe portion  245 . In some embodiments, the top drain pipe portion  245  may be disposed below the floor  105 . In such embodiments, the first lattice  1340  may be positioned below the floor  105 . The first flange  1314  rests on the top basin surface  110  such that the drain coupling  1230  does not fall through the drain opening  130 . 
     At  1808 , the drain body  1220  is disposed within the drain coupling  1230  such that the second flange  1514  rests on top of the first flange  1314 . Further, the latch body  1400  is positioned below the drain body  1220 . In some embodiments, the drain body  1220  interfaces with the first fixture projection  1350  second fixture projection  1360  to align the drain body  1220  within the drain coupling  1230  such that, for example, the first overflow aperture  1365  is aligned with the second overflow aperture  1580 . In some embodiments, the first fixture projection  1350  and the second fixture projection  1360  interface with the drain body  1220  to prevent rotational movement of the drain body  1220  about the central axis Z relative to the drain coupling  1230 . 
     At  1810 , the installation fixture  1604  (or a similar installation fixture) is extended through the drain body  1220  and the drain coupling  1230  from above (e.g., from within the wash basin  100 ). The installation fixture  1604  interfaces with the second flange third surface  1520 , and threads into the nut  1368 . As the installation fixture  1604  is threaded into the nut  1368 , the nut  1368  traverses up the installation fixture  1604 , bringing with it the first lattice  1340  and the latch body  1400 . The installation fixture  1604  is threaded into the nut  1368  until the first latch  1420  is positioned above the first hook  1553  and the second latch  1440  is positioned above the second hook  1557 . In some embodiments, in which the drain body  1220  does not include the first hook  1553  or the second hook  1557 , the installation fixture  1604  is threaded into the nut  1368  until the first latch  1420  and the second latch  1440  are positioned above the third flange  1540 . The movement of the first lattice  1340  toward the wash basin  100  forms the squeeze bulge  1610  within the drain coupling  1230 . 
     At  1812 , the installation fixture is removed from the drain coupling  1230  and the drain body  1220  (e.g., unthreaded from the nut  1368 ). 
     At  1814 , the toe tap  210  is operably coupled to the blind drain installation assembly  1200 . In some embodiments, the toe tap includes the toe tap fastener  510 , configured to threading couple to the nut  1368 . 
     As utilized herein, the terms “approximately,” “about,” “substantially”, and similar terms are intended to have a broad meaning in harmony with the common and accepted usage by those of ordinary skill in the art to which the subject matter of this disclosure pertains. It should be understood by those of skill in the art who review this disclosure that these terms are intended to allow a description of certain features described and claimed without restricting the scope of these features to the precise numerical ranges provided. Accordingly, these terms should be interpreted as indicating that insubstantial or inconsequential modifications or alterations of the subject matter described and claimed are considered to be within the scope of the disclosure as recited in the appended claims. 
     It should be noted that the term “exemplary” and variations thereof, as used herein to describe various embodiments, are intended to indicate that such embodiments are possible examples, representations, and/or illustrations of possible embodiments (and such terms are not intended to connote that such embodiments are necessarily extraordinary or superlative examples). 
     The term “coupled,” as used herein, means the joining of two members directly or indirectly to one another. Such joining may be stationary (e.g., permanent or fixed) or moveable (e.g., removable or releasable). Such joining may be achieved with the two members coupled to each other, with the two members coupled with a separate intervening member and any additional intermediate members coupled with one another, or with the two members coupled together with an intervening member that is integrally formed as a single unitary body with one of the two members. Such members may be coupled mechanically, electrically, and/or fluidly. 
     The term “or,” as used herein, is used in its inclusive sense (and not in its exclusive sense) so that when used to connect a list of elements, the term “or” means one, some, or all of the elements in the list. Conjunctive language such as the phrase “at least one of X, Y, and Z,” unless specifically stated otherwise, is understood to convey that an element may be either X, Y, Z; X and Y; X and Z; Y and Z; or X, Y, and Z (i.e., any combination of X, Y, and Z). Thus, such conjunctive language is not generally intended to imply that certain embodiments require at least one of X, at least one of Y, and at least one of Z to each be present, unless otherwise indicated. 
     References herein to the positions of elements (e.g., “top,” “bottom,” “above,” “below,” etc.) are merely used to describe the orientation of various elements in the FIGURES. It should be noted that the orientation of various elements may differ according to other exemplary embodiments, and that such variations are intended to be encompassed by the present disclosure. z 
     It is important to note that the construction and arrangement of the shelf assembly as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Any element disclosed in one embodiment may be incorporated or utilized with any other embodiment disclosed herein. Although one example of an element that can be incorporated or utilized in another embodiment has been described above, it should be appreciated that other elements of the various embodiments may be incorporated or utilized with any of the other embodiments disclosed herein. 
     Other substitutions, modifications, changes and omissions may also be made in the design, operating conditions and arrangement of the various exemplary embodiments without departing from the scope of the present invention. For example, any element (e.g., arm, shelf member, fastener, etc.) disclosed in one embodiment may be incorporated or utilized with any other embodiment disclosed herein. Also, for example, the order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. Any means- plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating configuration, and arrangement of the preferred and other exemplary embodiments without departing from the scope of the appended claims.