Patent Publication Number: US-11648573-B2

Title: Showerhead

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application is a continuation application of U.S. non-provisional patent application Ser. No. 16/597,050, filed 9 Oct. 2019, and entitled “Showerhead with Plurality of Modes,” which is a divisional application of U.S. non-provisional patent application Ser. No. 15/208,158 filed 12 Jul. 2016 and entitled “Method for Assembling a Showerhead,” now U.S. Pat. No. 10,478,837, issued 19 Nov. 2019, which is a divisional application of U.S. non-provisional patent application Ser. No. 14/304,495 filed 13 Jun. 2014 and entitled “Showerhead with Turbine Driven Shutter,” now U.S. Pat. No. 9,404,243, issued 2 Aug. 2016, which claims priority under 35 U.S.C. § 119(e) to U.S. provisional patent application No. 61/834,816 filed 13 Jun. 2013 and entitled “Showerhead with Turbine Driven Shutter,” all of which are hereby incorporated herein by reference for all purposes. 
    
    
     TECHNICAL FIELD 
     The technology disclosed herein relates generally to showerheads. 
     BACKGROUND 
     Showers provide an alternative to bathing in a bathtub. Generally, showerheads are used to direct water from the home water supply onto a user for personal hygiene purposes. 
     In the past, bathing was the overwhelmingly popular choice for personal cleansing. However, in recent years showers have become increasingly popular for several reasons. First, showers generally take less time than baths. Second, showers generally use significantly less water than baths. Third, shower stalls and bathtubs with showerheads are typically easier to maintain. Fourth, showers tend to cause less soap scum build-up. Fifth, by showering, a bather does not sit in dirty water—the dirty water is constantly rinsed away. 
     With the increase in popularity of showers has come an increase in showerhead designs and showerhead manufacturers. Many showerheads emit pulsating streams of water in a so-called “massage” mode. Other showerheads are referred to as “drenching” showerheads, since they have relatively large faceplates and emit water in a steady, soft spray pattern. 
     The information included in this Background section of the specification, including any references cited herein and any description or discussion thereof, is included for technical reference purposes only and is not to be regarded subject matter by which the scope of the invention is to be bound. 
     SUMMARY 
     In one embodiment, a showerhead per the disclosure herein has a water-powered turbine, a cam, and a shutter. The shutter is connected to the turbine and the cam so as to oscillate across groups of nozzle outlet holes in a massaging showerhead. 
     Another embodiment includes an apparatus including a turbine attached to a cam, where the turbine is operatively connected to two or more shutters through links. Movement of the turbine causes the shutters to oscillate across groups of nozzle outlet holes. 
     Yet another embodiment includes a showerhead including a housing defining a chamber in fluid communication with a fluid inlet such as a water source, a first bank of nozzles, and a second bank of nozzles. The showerhead also includes a massage mode assembly that is at least partially received within the chamber. The massage mode assembly includes a turbine, a cam connected to or formed integrally with the turbine, and a shutter connected to the cam. With the structure of the massage mode assembly, the movement of the shutter is restricted along a single axis such that as the turbine rotates, the cam causes the shutter to alternatingly fluidly connect and disconnect the first bank of nozzles and the second bank of nozzles from the fluid inlet. 
     Another embodiment of the present disclosure includes a method for producing a massaging spray mode for a showerhead. The method includes fluidly connecting a first plurality of nozzles to a fluid source, where each of the nozzles within the first plurality of nozzles are opened substantially simultaneously and fluidly disconnecting the first plurality of nozzles form the fluid source, where each of the nozzles in the first plurality of nozzles are closed substantially simultaneously. 
     Yet another embodiment of the present disclosure includes a showerhead having a spray head, an engine, and a face plate. The engine is fluidly connected to a water source and is received within the spray head. The engine may include a massage mode assembly that has a turbine and a shoe connected to the turbine, where the movement of the shoe is restricted to a single axis. As the turbine rotates, the shoe alternating fluidly connects and disconnects a first set of nozzle apertures and a second set of nozzle apertures, where each nozzle within the specific set is open and closed at substantially the same time. Additionally, the face plate is connected to the engine and is configured to selectively rotate the engine, in order to vary the spray characteristics of the showerhead. 
     Other embodiments include a method of assembling a showerhead. The method includes connecting together two or more flow directing plates to create an engine for the showerhead, placing the engine with a spray head a number of degrees out of phase from an operational orientation, rotating the engine the number of degrees into the operational direction, and connecting the engine to the spray head by a fastener received through a back wall of the spray head. 
     Another embodiment includes a showerhead having a housing defining a chamber in fluid communication with a fluid source, an engine received within the housing and fluidly connected to the chamber, where the engine includes a plurality of outlets in selective communication with the chamber, and an engine release assembly connected to the housing and the engine, where the engine release assembly selectively secures and releases the engine from the housing. 
     Still other embodiments include a showerhead with multiple modes. The showerhead includes a spray head fluidly connected to a fluid source and an engine at least partially received within the spray head. The engine includes a face plate defining a plurality of outlets and a back plate connected to the face plate. The connection between the face plate and the back plate defines at least a first fluid channel and a second fluid channel in selective fluid communication with the fluid source and with respective subsets of the plurality of outlets. The engine also includes a first mode aperture defined through the back plate and in fluid communication with the first fluid channel, a second mode aperture defined through the back plate and in fluid communication with the second fluid channel, and an alternate mode aperture defined through the back plate and in fluid communication with the first fluid source. 
     Another embodiment includes a showerhead with a housing, a turbine, and a shutter. The housing defines a fluid inlet and a chamber in fluid communication with the fluid inlet. The chamber includes a plurality of engagement teeth and defines outlets for a first nozzle bank and a second nozzle bank. The turbine is received in the chamber. The shutter is received in the chamber and rotatably coupled to the turbine such that rotation of the turbine causes movement of the shutter. The shutter includes a plurality of shutter teeth positioned around a perimeter of the shutter. Engagement of the shutter teeth and the engagement teeth act to restrict the shutter from rotating while allowing the shutter to move across the chamber in a sliding motion. 
     This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter. A more extensive presentation of features, details, utilities, and advantages of the present invention as defined in the claims is provided in the following written description of various embodiments of the invention and illustrated in the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1 A  is an isometric view of a showerhead including a massage mode assembly. 
         FIG.  1 B  is a front elevation view of the showerhead of  FIG.  1 A . 
         FIG.  2    is an exploded view of the showerhead of  FIG.  1 A . 
         FIG.  3    is a cross-sectional view of the showerhead of  FIG.  1 A  taken along line  3 - 3  in  FIG.  1 B . 
         FIG.  4    is an enlarged cross-sectional view of a portion of the showerhead of  FIG.  1 A  as indicated in  FIG.  3   . 
         FIG.  5    is a rear isometric view of a cover plate for the showerhead. 
         FIG.  6 A  is a front isometric view of a face plate for the showerhead. 
         FIG.  6 B  is a rear isometric view of the face plate of  FIG.  6 A . 
         FIG.  7 A  is a front plan view of an inner plate of the showerhead. 
         FIG.  7 B  is a rear plan view of the inner plate of  FIG.  7 A . 
         FIG.  8 A  is a top plan view of a back plate of the showerhead. 
         FIG.  8 B  is a bottom plan view of the back plate of  FIG.  8 A . 
         FIG.  9 A  is a top isometric view of a mounting plate for the showerhead. 
         FIG.  9 B  is a bottom isometric view of the mounting plate of  FIG.  9 B . 
         FIG.  10    is a top isometric view of the massage mode assembly of the showerhead. 
         FIG.  11    is a cross-sectional view of the massage mode assembly taken alone line  11 - 11  in  FIG.  10   . 
         FIG.  12    is a bottom isometric view of the massage mode assembly of  FIG.  10   . 
         FIG.  13 A  is a bottom isometric view of a turbine for the massage mode assembly. 
         FIG.  13 B  is a top plan view of the turbine of  FIG.  13 A . 
         FIG.  14    is a cross-sectional view of the face plate and a mist ring of the showerhead of  FIG.  1 A . 
         FIG.  15    is an exploded view of a selecting assembly for the showerhead of  FIG.  1 A . 
         FIG.  16 A  is an enlarged cross-section view of the massage mode assembly with the shutter in a first position. 
         FIG.  16 B  is an enlarged cross-section view of the massage mode assembly with the shutter in a second position. 
         FIG.  17 A  is an isometric view of a second example of a showerhead including the massage mode assembly. 
         FIG.  17 B  is a rear isometric view of the showerhead of  FIG.  17 A . 
         FIG.  18    is an exploded view of the showerhead of  FIG.  17 A . 
         FIG.  19    is a cross-section view of the showerhead of  FIG.  17 A  taken along line  19 - 19  in  FIG.  17 B . 
         FIG.  20 A  is a front isometric view of a spray chamber housing of the showerhead of  FIG.  17 A . 
         FIG.  20 B  is a rear plan view of the housing of the showerhead of  FIG.  17 A . 
         FIG.  21 A  is a bottom isometric view of a keyed washer of the showerhead of  FIG.  17 A . 
         FIG.  21 B  is a top isometric view of the keyed washer of  FIG.  21 A . 
         FIG.  22 A  is a top plan view of a back plate of the showerhead of  FIG.  17 A . 
         FIG.  22 B  is a bottom plan view the back plate of  FIG.  22 A . 
         FIG.  23    is an isometric view of a third example of a showerhead including a massage mode assembly. 
         FIG.  24    is a cross-section view of the showerhead of  FIG.  23    taken along line  24 - 24  in  FIG.  23   . 
         FIG.  25    is a cross-section view of a first example of a massage mode assembly. 
         FIG.  26 A  is a cross-section view of the massage mode assembly of  FIG.  25    with the shutter in a first position. 
         FIG.  26 B  is a cross-section view of the massage mode assembly of  FIG.  25    with the shutter in a second position. 
         FIG.  27    is an isometric view of a second example of a massage mode assembly. 
         FIG.  28    is an exploded view of the massage mode assembly of  FIG.  27   . 
         FIG.  29    is a cross-section view of the massage mode assembly of  FIG.  28    taken along line  29 - 29  in  FIG.  28   . 
         FIG.  30    is an isometric view of a third example of a massage mode assembly. 
         FIG.  31    is a cross-section view of the massage mode assembly of  FIG.  30    taken along line  31 - 31  in  FIG.  30   . 
         FIG.  32    is an isometric view of a fourth example of a massage mode assembly. 
         FIG.  33    is an isometric view of a fifth example of a massage mode assembly. 
         FIG.  34    is a top isometric view of a sixth example of a massage mode assembly. 
     
    
    
     DETAILED DESCRIPTION 
     This disclosure is related to a showerhead including a pulsating or massaging spray. The showerhead may include a massage mode assembly including a jet disk, a turbine, a shutter, and a housing. The massage mode assembly is used to create the pulsating or intermittent spray. In one embodiment, the turbine defines one or more cams or cam surfaces and the shutter, which may be restrained in certain directions, follows the movement of the cam to create the pulsating effect by selectively blocking and unblocking outlet nozzles. 
     In operation, water flowing through the showerhead causes the turbine to spin and, as the turbine spins, the cam rotates causing the shutter to oscillate. In examples where the shutter movement is constrained in one or more directions, the shutter may move in a reciprocal motion, such as a back and forth motion, rather than a continuous motion. The reciprocal motion allows a first group of nozzles to be covered by the shutter, while a second group of nozzle is uncovered and, as the shutter reciprocates, the shutter moves to close the second group of nozzles at the same time that the first group of nozzles is opened. In many embodiments the nozzles in both groups may not be open or “on” at the same time. In particular, nozzles from a first nozzle group may be closed while nozzles from the second group are open and vice versa. As such, the showerhead may not include a set of “transitional” nozzles, i.e., nozzle groups in which the nozzles in a group progressively open and close such as due to a rotating shutter. 
     The binary functionality of the massage mode or pulsating mode allows the showerhead to produce a stronger fluid force during the pulsating mode, allowing the user to experience a more intense “massage” mode, even with lower fluid flow rates. In some instances the pulse mode may be 50% more forceful than the pulse mode of conventional “progressive” pulse showerheads. Thus, the showerhead may be able to conserve more water than conventional showerheads, while avoiding a decrease in force performance, and in fact may allow a user to experience a greater force during the massage mode. 
     In some embodiments, a pulsating showerhead spray may be formed by an oscillating shutter. The shutter may be configured to oscillate past the openings of discreet sets of spray nozzles. As an example, the shutter may be actuated by one or more eccentric cams attached to, or formed integrally with, the water driven turbine. These elements include one or more shutters operating in an oscillatory fashion, a turbine with one or multiple cams, and two or more individual groups of water outlet nozzles. Other embodiments may also include links between the cam(s) and shutter(s). 
     Some embodiments of showerheads of the present disclosure may also include a pause or trickle mode. For example, in one embodiment the showerhead may include a plurality of modes, such as full body mode, massage mode, mist mode, and a trickle mode. The trickle mode allows a minimum amount of flow to exit the showerhead when the water source is on. Depending on the structural characteristics of the showerhead, such as the housing and flow directing plates, the trickle mode may prevent substantially all flow from the showerhead out of the nozzles, to “pause” the showerhead flow without requiring a user to turn the water supply off. As one example, the showerhead may include a back plate with a plurality of mode apertures, where each mode aperture corresponds to a particular fluid channel and nozzle group of the showerhead. In this example, the trickle mode may include a mode aperture that has a smaller width than the remaining showerhead modes, so that the flow of water into the fluid channel is restricted. In addition to or separate from the trickle mode, the showerhead may also include a low flow mode as a water saving feature. The low flow mode may correspond to a low flow aperture that may be larger than the trickle mode aperture, but smaller than the regular mode apertures. 
     In embodiments including the trickle mode and the low flow mode, the trickle mode aperture and the low flow aperture may be selected by over-clocking or chocking a mode selector assembly to an extreme position. The fluid from a water source may then be directed toward the desired trickle mode or low flow mode, with the diameter of the corresponding mode aperture determining the flow rate output by the showerhead. 
     Additionally, in some embodiments the various components of the showerhead may be configured to be assembled and disassembled quickly and repeatedly. For example, the showerhead may include a handle having a spray head, a face plate cover, and an engine. The engine may include the various internal components of the showerhead such as the massage mode assembly, one or more flow directing plates, and so on. The engine is received within the spray head and the cover is secured to the engine and showerhead to secure the engine within the spray head. The engine may be configured to engage one or more keying elements in the spray head, cover, housing, or other component such as a mounting plate connected thereto. A fastener or other component may be used to secure the engine to the spray head once the engine is rotated to a desired, locked position. The fastener may be easily accessible from the exterior of the showerhead to allow the fastener to be removed without damaging the housing. Once the fastener is removed the engine can rotated out of alignment with the keying features and removed easily without damaging the other components. 
     In one example, the fastener may include a snap-fit connection between a back plate of the engine and a mounting plate connected to the housing or the housing itself. In this example, the engine may be snapped into place within the spray head. In another example, the fastener may be a screw or other threaded element that is threaded to a keyed washer. The keyed washer may be connected to the engine through a cap cavity in a back wall of the spray head or other housing. In this example, the showerhead may include a decorative cap that may conceal the fastener when the showerhead is assembled. 
     In embodiments where the engine may be selectively attached and detached from the spray head, the showerhead may be manufactured at a lower cost with increased reliability. In particular, often the handle and/or cover may be plated with an aesthetically pleasing material, such as a chrome or metal plating. These may be the most expensive components of the showerhead as the remaining components may be constructed out of plastic and other relatively inexpensive materials. In conventional showerheads, once the showerhead had been assembled, the engine could not be removed without damaging components of the showerhead. As such, if one or more components within the engine were damaged or flawed, the entire showerhead was often tossed out. However, in embodiments having the removable engine, the showerheads can be assembled, tested, and, if a component is not operating as desired, the engine can be removed and replaced without disposing of the more expensive components as well. 
     Turning to the figures, showerhead embodiments of the present disclosure will now be discussed in more detail.  FIGS.  1 A and  1 B  are various views of the showerhead.  FIG.  2    is an exploded view of the showerhead of  FIG.  1 A .  FIGS.  3  and  4    are cross-section views of the showerhead of  FIG.  1 A . With reference to  FIGS.  1 A- 2   , the showerhead  100  may include a handle  102  and a spray head  104 . In the embodiment shown in  FIGS.  1 A- 2   , the showerhead  100  is a handheld showerhead. However, in other embodiments (see, e.g.,  FIG.  23   ), the showerhead  100  may be a fixed or wall mount showerhead, in which case the handle  102  may be omitted or reduced in size. The handle  102  defines an inlet  108  for the showerhead  100  that receives water from a fluid source, such as a hose, J-pipe, or the like. Depending on the water source, the handle  102  may include threading  106  or another connection mechanism that can be used to secure the handle  102  to the hose, pipe, etc. 
     In embodiments where the showerhead  100  is a handheld showerhead, the handle  102  may be an elongated member having a generally circular cross section or otherwise be configured to be comfortably held in a user&#39;s hand. Additionally, as shown in  FIG.  2   , the showerhead  100  may also include a flow regulator  160  and a filter  162  that are connected to the handle  102 . 
     With reference to  FIGS.  1 A and  1 B , the spray head  104  includes a plurality of output nozzles arranged in sets or groups, e.g., a first nozzle group  110 , a second nozzle group  112 , a third nozzle group  114 , and a fourth nozzle group  116 , that function as outlets for the showerhead  100 . As will be discussed in more detail below, each of the selected nozzle groups  110 ,  112 ,  114 ,  116  may be associated with a different mode for the showerhead  100 . Additionally, certain groups of nozzles, such as the fourth nozzle group  116  may include nozzle subsets such as a first nozzle bank  120  and a second nozzle bank  122 . In this example, the two nozzle banks  120 ,  122  may be crescent shaped, include five nozzles, and may be positioned opposite one another. However, the example shown in  FIGS.  1 A and  1 B  is meant as illustrative only and many other embodiments are envisioned. The showerhead mode is varied by rotating the mode selector  118 , which in turn rotates an engine  126  received within the spray head  104 , which will be discussed in more detail below. 
     With reference to  FIG.  2   , the showerhead  100  may include the engine  126  having a plurality of flow directing plates,  146 ,  158 ,  146 , a massage assembly  152 , and additional mode varying components. The engine  126  is received within the spray head  104  and a cover  150  contains the engine  126  within the spray head  104  and provides an aesthetically pleasing appearance for the showerhead  100 .  FIG.  5    is a rear isometric view of the cover. With reference to  FIGS.  1 A,  2 , and  5   , the cover  150  is configured to generally correspond to the front end of the spray head  104  and may be a generally circularly shaped body. The cover  150  defines a plurality of apertures, such as the nozzle apertures  178  and the bank apertures  180   a ,  180   b . As will be discussed below these apertures  178 ,  180   a ,  180   b  receive nozzles that form the nozzle groups  110 ,  112 ,  114 ,  116  of the showerhead  100 . Accordingly, the shape, size, and position of the nozzle apertures  178  and bank apertures  180   a ,  180   b  may be provided to correspond to the number and position of the mode nozzles. 
     The cover  150  forms a cup-like structure on the rear side that defines a cover chamber  172 . The cover chamber  172  may be configured to receive one or more components of the engine  126 . A plurality of alignment brackets  174  define the perimeter of the cover chamber  172  and extend upward from an interior bottom wall  184 . The alignment brackets  174  have a curvature substantially matching the curvature of the perimeter of the cover  150  and are spaced apart from one another around the perimeter. In one embodiment the showerhead cover  150  may include seven alignment brackets  174 . However, the number of brackets  174  and the spacing between the brackets  174  may be varied based on the diameter of the cover  150 , the number of modes for the showerhead  100 , and other factors. Additionally, although a plurality of alignment brackets  174  are illustrated, in other embodiments the cover  150  may include a single outer wall defining the perimeter of the cover chamber  172 . Each alignment bracket  174  may include a bracket aperture  176  defined therethrough. 
     With reference to  FIG.  5   , the alignment brackets  174  may be spaced apart from a top edge of a rim  186  forming the back end of the cover  150 . The spacing between the brackets  174  and the top edge of the rim  186  defines a gap  188 . 
     The interior bottom wall  184  of the cover  150  may include a center area  190  that is recessed further than the other portions of the bottom wall  184 . The center area  190  may be located at a central region of the cover  150 . A small disk-shaped recess  182  may be formed at the center point of the center area  190 . The recess  182  is located below the interior surface of the center area  190  and extends outward past the exterior of the center area  190 . The mode selector  118  may be a finger grip formed integrally with the cover  118  and extending outward from the rim  186 . 
     The face plate  148  will now be discussed in more detail.  FIGS.  6 A and  6 B  are front and rear perspective views of the face plate  148 .  FIG.  14    is a cross-section view of the face plate  148  and mist plug ring  156 . The face plate  148  includes a front surface  192  and a rear surface  194 . The front surface  192  defines a plurality of outlets  198 ,  200  as well as the nozzles for select nozzle groups  112 ,  114 . Depending on the desired spray characteristics for each mode of the showerhead  100 , the outlets  198 ,  200  and nozzles  112 ,  114  may be raised protrusions with an outlet in the middle, apertures formed through the face plate  148 , or the like. For example, the nozzles for the second nozzle group  112  may include raised portions that extend outward from the front surface  192  of the face plate  148  and on the back surface  194  may include nozzle chambers  226 . The nozzle chambers  226  may be formed as individual cylindrical cavities that funnel toward the nozzle outlet. Each nozzle chamber  226  may include an interior shelf  228  defined toward a bottom end of the chamber  226 . The interior shelf  228  reduces the diameter of the chamber  226  before the nozzle outlet, which may be formed as a mist outlet  4   422  defined through the shelf  228  on the bottom of the chambers  226 . 
     With continued reference to  FIGS.  6 A,  6 B and  14   , the face plate  148  may include a raised platform  194  extending outward from a central region of the face plate  148 . The platform  194  may include two curved sidewalls  202  facing one another and two straight sidewalls  204  connecting the two curved sidewalls  202 . The raised platform  194  also includes a nub  196  extending outward from the center of the platform  194 . The two nozzle banks  120 ,  122  are defined as raised, curved formations on the top of the platform  194 . In this example, the two nozzle banks  120 ,  122  are curved so as to form opposing parenthesis shapes facing one another with the nub  196  being positioned between the two banks  120 ,  122 . The banks  120 ,  122  may generally match the curvature of the curved sidewalls  202  of the platform  194 . Each bank  120 ,  122  may include a plurality of outlets  198 . In one example, each bank  120 ,  122  may include five outlets  198 ; however, the number of outlets  198  and the positioning of the outlets may vary based on the desired output characteristics of the showerhead  100 . 
     The nozzle groups  112 ,  114  may be formed in concentric rings surrounding the platform  194 . In this manner, the banks  120 ,  122  may form the innermost ring of nozzles for the showerhead  100  with the remaining nozzle groups  110 ,  112 ,  114  surrounding the banks  120 ,  122 . 
     With reference to  FIG.  6 B , the face plate  148  may also include a perimeter wall  206  extending outward from the perimeter edge of the bank surface  194 . The perimeter wall  206  forms an outer wall of the face plate  148 . The face plate  148  may include a plurality of concentric ring walls  230 ,  232 ,  234  that along with the perimeter wall  206  define a plurality of flow paths  212 ,  214 ,  216 ,  218 . For example, the first ring wall  230  extends upward from the back surface  194  of the face plate  148  but is positioned closer toward the center of the face plate  148  than the outer perimeter wall  206 . The gap between the perimeter wall  206  and the first ring wall  230  defines the first flow path  212  and includes a first set of outlets  200 . As another example, the first ring wall  230  and the second ring wall  232  define the second flow path  214  that includes the second nozzle group  112  and the second ring wall  232  and the third ring wall  234  define the third flow path  216 . When the face plate  148  is connected to the other plates of the showerhead  100 , the flow paths  212 ,  214 ,  216 ,  218  defined by the various walls  206 ,  230 ,  232 ,  234  correspond to fluid channels for discrete modes of the showerhead  100 . As should be understood, the walls  206 ,  230 ,  232 ,  234  prevent fluid from one flow path  212 ,  214 ,  216 ,  218  from reaching outlets and/or nozzles in another flow path when the engine  126  is assembled. The shape and locations of the walls may be varied based on the desired modes for the showerhead. 
     The third ring wall  234  defines the fourth flow path  218 , as well as a massage chamber  220 . The massage chamber  220  is configured to receive the massage assembly  152  as will be discussed in more detail below. The massage chamber  220  may include an annular wall  236  concentrically aligned and positioned against the third ring wall  234 . However, the annular wall  236  is shorter than the third ring wall  234  so that it defines a shelf within the massage chamber  220 . 
     A bottom surface of the massage chamber  220  includes two curb walls  2222 . The curb walls  2   222  extend toward a center of the chamber  220  and include a straight edge that varies the geometry of the bottom end of the chamber  220 . The two curbs  2   222  oppose each other to transform the bottom end of the chamber  220  to a rectangle with curved ends or a truncated circle. The curb walls  2   222  generally correspond to the straight edges  204  of the platform  194  on the front surface  192  of the face plate  148 . 
     A pin recess  224  is defined at the center of the chamber on the bottom surface and extends into the back of the nub  196 . The pin recess  224  is configured to receive and secure a pin from the massage assembly  152  as will be discussed in more detail below. Additionally, the nozzle outlets  198  for each bank  120 ,  122  are defined along a portion of the bottom surface of the massage chamber  220 . 
     The engine  126  may also include an inner plate  158 . The inner plate  158  may define additional modes for the showerhead. However, in embodiments where fewer modes may be desired, the inner plate may be omitted (see, e.g.,  FIGS.  17 A- 24   )  FIGS.  7 A and  7 B  illustrate front and rear views, respectively, of the inner plate  158 . With reference to  FIGS.  7 A and  7 B , the inner plate  158  may be a generally circular plate having a smaller diameter than the face plate  148 . The inner plate  158  may include a plurality of tabs  258  extending outward from a sidewall of the inner plate  158 . A massage aperture  252  is formed through the center of the inner plate  158  such that the inner plate  158  has a ring or donut shape. Similar to the face plate  148 , the inner plate  158  may include a plurality of walls defining a plurality of flow paths. For example, the inner plate  158  may include an outer perimeter wall  242  along the outer perimeter of the plate  158  and first and second ring walls  244 ,  246  defined concentrically within the perimeter wall  242 . The perimeter wall  242  and the first and second ring walls  244 ,  246  extend from both the front and rear surfaces  238 ,  240  of the inner plate  158 . The perimeter wall  242  and the first and second ring walls  244 ,  246  form closed concentric circles on the front surface  238 . The perimeter wall  242  and the first ring wall  244  define a first flow path  248  and the first ring wall  244  and the second ring wall  246  define a second flow path  250 . Each of the flow paths  248 ,  250  include apertures  254 ,  256  defined through the front surface and rear surfaces  238 ,  240  of the inner plate  158 . As will be discussed in more detail below, the flow paths  248 ,  250  and the respective apertures  254 ,  256  fluidly connect select nozzle groups based on the selected mode of the showerhead  100 . 
     With reference to  FIG.  7 B , the inner plate  158  may include a first finger  260  and a second finger  262  that project into the mode aperture  252  on the rear side of the inner plate  158 . As will be discussed in more detail below, the fingers  260 ,  262  provide structural support for the mode selection components and help direct water to a desired fluid channel. The first finger  260  is fluidly connected to the second flow path  250 . On the rear surface  240  of the inner plate  158 , the second finger  262  includes a plurality of separating walls  264 ,  266 ,  268  that intersect with one or more of the outer wall  242 , first ring wall  244 , and/or second ring wall  246 . For example, the first separating wall  264  bisects the second finger  262  to define a first portion  270  and a second portion  272 . The first separating wall  264  intersects with the outer wall  242 . The second separating wall  266  is defined on an outer edge of the second finger  262  and intersects with both the outer wall  242  and the first ring wall  244  to fluidly separate the first flow path  248  from the first portion  270  of the second finger  262 . Similarly, the third separating wall  268  is formed on the opposite edge of the second finger  262  from the second separating wall  266 . The third separating wall  268  intersects with the interior wall of the inner plate  158  defining the massage aperture  252  and the second ring wall  246 . In this manner, the third separating wall  268  fluidly separates the second portion  272  of the second finger  262  from the second flow path  250 . 
     The back plate  146  for the showerhead  100  will now be discussed in more detail.  FIGS.  8 A and  8 B  are top and bottom views of the back plate  146 . With reference to  FIGS.  8 A and  8 B , the back plate  146  has a back side  276  and a front side  278 . A perimeter wall  296  extends outward and at an angle from the back side  276  and then transitions to a cylindrical form to extend normal to the front side  278 . In embodiments where the perimeter wall  296  is angled, the back side  276  of the back plate  146  may have a frustum or partially conical shape (see  FIGS.  2  and  8 A ). The back plate  146  may include a plurality of tabs  280  extending outward and spaced apart from one another on the outer surface of the perimeter wall  296 . The configuration of the back plate may be modified based on the connection to the spray head as will be discussed in more detail below. 
     With reference to  FIG.  8 A , a locking band  282  is formed on the back side  276  of the back plate  146 . The locking band  282  includes a plurality of locking fingers  318 . The locking fingers  318  are spatially separated from each other and are configured to act as fasteners to connect the back plate to the mounting plate  144 , as will be discussed in more detail below. The locking fingers  318  are separated from one another so that they will be more flexible than a solid band of material so as to allow the fingers  318  to flex and resiliently return to an initial position. The locking fingers  318  may include lips  320  (see  FIG.  4   ) extending from a front sidewall. The locking band  282  is defined in a generally circular shape on the back side  276 . 
     With continued reference to  FIG.  8 A , the back plate  146  may also include a plurality of detent recess  292  defined on the back side  276 . In one embodiment, there may be seven detent recess  292 , however, the number of recesses  292  may be based on a desired number of modes for the showerhead  100 . Thus, as the number of modes varies, so may the number of detent recesses  292 . The back plate  146  may also include a stop bump  294  extending upward from the back side  276 . The stop bump  294  may be somewhat trapezoidal-shaped with a curved interior surface facing the center of the back plate  146 . 
     With continued reference to  FIG.  8 A , the back plate  146  includes a plurality of mode apertures  284 ,  286 ,  288 ,  290 . The mode apertures  284 ,  286 ,  288 ,  290  are somewhat triangularly shaped apertures and are positioned adjacent one another. Each of the apertures  284 ,  286 ,  288 ,  290  may correspond to one or more modes of the showerhead  100 , as will be discussed below. In some embodiments, the mode apertures  284 ,  286 ,  288 ,  290  may include a plurality of support ribs  322  extending lengthwise across each aperture to form groups of apertures. 
     With reference to  FIG.  8 B , the back plate  146  may include a plurality of ring walls  298   300 ,  302  extending outward from the front side  278 . Similar to the other plates of the showerhead, the ring walls  298 ,  300 ,  302  of the back plate  146  may be generally concentrically aligned and may have decreasing diameters, where combinations of ring walls define flow paths for the back plate  146 . In particular, the outer perimeter wall  296  and the first ring wall  298  define a first flow path  310 , the first ring wall  298  and the second ring wall  300  define a second flow path  312 , the second ring wall  300  and the third ring wall  302  define a third flow path  314 , and the third ring wall  302  defines a forth flow path  316 . 
     Similar to the inner plate  158 , the back plate  146  may include a plurality of separating walls  304 ,  306 ,  308  that fluidly separate the flow paths  310 ,  312 ,  314  from one another. In one embodiment, the back plate  146  may include a first separating wall  304  that intersects with the first ring wall  298  to fluidly separate the first flow path  310  from the second flow path  312 , a second separating wall  306  intersects the second and third ring walls  300 ,  302  to separate the second flow path  312  from the third flow path  314 , and a third separating wall  308  that intersects the second and third ring walls  300 ,  302  to separate the froth flow path  316  from the other flow paths. In this embodiment, the third ring wall  302  may transition into a separating wall  324  that functions to separate the fourth flow path  316  from the first flow path  310 . The separating walls  304 ,  306 ,  308 ,  324  are configured to separate each of the mode apertures  284 ,  286 ,  288 ,  290  accordingly the thickness of the separating walls  304 ,  306 ,  308 ,  324  may be determined in part by the separation distance between each of the mode apertures  284 ,  286 ,  288 ,  290 . 
     A mounting plate  144  connects the engine  126  to the showerhead  100 .  FIGS.  9 A and  9 B  illustrate top and bottom views of the mounting plate  144 . With reference to  FIGS.  9 A and  9 B , the mounting plate  144  may include a top face  326  and a bottom face  328 . A brim  330  extends outward from a terminal bottom edge of the 1 top face  326 . The brim  330  has a larger diameter than the top face  326  and may be substantially planar. A plurality of braces  332  extend upward 3 at an angle between at sidewall of the top face  326  and the brim  330  to provide support for the top face  326  of the mounting plate  144 . 
     With reference to  FIG.  9 A , the mounting plate  144  may include an oval shaped engagement wall  338  extending upward from the top face  326 . The engagement wall  338  extends across a width of the top face  326 . Two parallel sidewalls  340 ,  342  are positioned within the engagement wall  338  along the longitudinal sides of the engagement wall  338 . The sidewalls  340 ,  342  are parallel to each other and a spaced apart from the interior surface of the engagement wall  338 . An engine inlet  336  is defined as an aperture through the top face  326  of the mounting plate  144 . The engine inlet  336  is defined at one end of the engagement wall  338  and is surrounded by the engagement wall  338 . The mounting plate  144  may further include a plurality of fastening apertures  334  defined at various positions on the top face  326 . 
     With reference to  FIG.  9 B , the mounting plate  144  may include a seal cavity  350  defined by walls extending upward from the bottom face  328 . The seal cavity  350  may have a somewhat trapezoidal shape but with one of the walls being slightly curved. The engine inlet  336  is located within the seal cavity  350 . The mounting plate  144  may also include two spring columns  346 ,  348  extending downward from the bottom face  328 . The spring columns  346 ,  348  are positioned on opposite sides of the engine inlet  336  and may be formed on a bottom surface of the two parallel sidewalls  340 ,  342  on the top end of the mounting plate  144 . 
     With continued reference to  FIG.  9 B , the mounting plate  144  may further include a stop cavity  344  defined as a semicircular cavity in the central region of the bottom face  328 . The stop cavity  344  may be configured to correspond to the shape and of the stop bump  294  of the back plate  146  to allow the stop bump  294  to be received therein. A detent pin cavity  342  is defined on an opposite side of the bottom face  328  from the seal cavity  350 . The detent pin cavity  342  may be a generally cylindrically-shaped volume. 
     The massage mode assembly  152  will now be discussed in more detail.  FIG.  10    is a top perspective view of the massage mode assembly  152 .  FIG.  11    is a cross-sectional view of the massage mode assembly  152  taken along line  11 - 11  in  FIG.  10   .  FIG.  12    is a bottom isometric view of the massage mode assembly  152  of  FIG.  10   . With reference to  FIGS.  2 ,  10   , and  11 , the massage mode assembly  152  may include a jet plate  164 , a pin  168 , a turbine  166 , and a shutter  170 . Each of these components will be discussed in turn below. 
     The jet plate  164  forms a top end of the massage mode assembly  152  and may be a generally planar disc having a plurality of inlet jets  354 ,  356 ,  358 . The inlet jets  354 ,  356 ,  358  are raised protrusions that extend upward and at an angle from the top surface  352  of the jet plate  164 . Each inlet jet  354 ,  356 ,  358  includes an inlet aperture  366  providing fluid communication through the jet plate  164 . A plurality of pressure apertures  362  may be defined through the jet plate  164  and spaced apart from the inlet jets  354 ,  356 ,  358 . 
     With reference to  FIGS.  10  and  11   , the jet plate  164  may also include an anchor column  360  extending upward from the top surface  352 . The anchor column  360  may be at least partially hollow to define a cavity configured to receive the pin  168  (see  FIG.  11   ). Additionally, the jet plate  164  may include a rim  364  extending upward from the top surface  352  along the outer perimeter edge of the top surface  352 . 
     The turbine  166  of the massage mode assembly  152  will now be discussed.  FIGS.  13 A and  13 B  are various views of the turbine. The turbine  166  may be a generally hollow open-ended cylinder having blades  368  extending radially inward toward a central hub  378  from a generally circular turbine wall  380 . The turbine wall  380 , or portions thereof, may be omitted in some embodiments. Additionally, although eight blades  368  have been illustrated, the turbine  166  may include fewer or more blades  368 . The turbine  166  may include a pin-shaped extrusion  374  extending generally through the hub  378 . The pin shaped extrusion  374  may extend slightly upward from the upper side of the turbine  166  and downward from the lower side of the turbine  166 . A pin aperture  376  is defined longitudinally through the pin-shaped extrusion  374  and has a diameter corresponding to a diameter of the pin  168 . 
     The turbine  166  may also include an eccentric cam  372  on its lower side (i.e., the downstream side of the turbine  166 ). The cam  372  is positioned off-center from the hub  378  and is formed integrally with the turbine  166 . In one embodiment, the cam  372  includes a cylindrically shaped disc that is offset from the center of the turbine  166 . In other embodiments, the cam  372  may be otherwise configured and may be a separate component connected to or otherwise secured to the turbine  166 . (See, e.g.,  FIG.  31    illustrating alternative examples of the cam and turbine structure). 
     With reference to  FIG.  12   , the shutter  170  will now be discussed in more detail. The shutter  170  or shoe includes a shutter body  382  having a cam aperture  384  defined therethrough. The shutter body  382  is a solid section of material (other than the cam aperture  384 ), which allows the shutter  170  to selectively block fluid flow to outlets when positioned above those outlets. The cam aperture  384  may be a generally oval-shaped aperture defined by an interior sidewall  386  of the shutter body  382 . The width of the cam aperture  384  is selected to substantially match the diameter of the cam  372  of the turbine  166 . However, the length of the cam aperture  384  is longer than the diameter of the cam  372 . 
     With continued reference to  FIG.  12   , the shutter  170  may be a substantially planar disc having a generally oval shaped body  382  but with two parallel constraining edges  388 ,  390  formed on opposing ends. In particular, the shutter body  382  may have two relatively straight constraining edges  388 ,  390  formed at opposite ends from one another and two curved edges  392  formed on opposite sides from one another. In one embodiment, the curved ends  392  form the longitudinal edges for the shutter body  382  and the constraining edges  388 ,  390  form the lateral edges. However, in other embodiments, the shutter  170  may be otherwise configured. 
     As briefly mentioned above with respect to  FIG.  2   , the showerhead  100  may also include a mist plug ring  156 . The mist plug ring  156  creates a mist output from the showerhead  100  nozzles, in particular the second nozzle group  112 . With reference to  FIGS.  2  and  14   , the mist plug ring  156  may include a plurality of mist plugs  418  interconnected together on a ring  420 . There may be a mist plug  418  for every mist outlet  422  in the second nozzle group  112 . The mist plugs  418  may have a “Z” shape configured to seat against some portions of the sidewall of the mist nozzle chamber  226 , but not fill the entire chamber  226 . In particular, the stepped or notched edges on either side of the mist plugs  418  provide a gap between the sidewall of the chamber  226  and the plug  418  to allow water to flow into the chamber  226  and through the outlet  422 . As will be discussed in more detail below, the mist plugs  418  create a varying fluid flow within the mist chamber  226  that creates a misting characteristic for the water outflow. 
     In some embodiments, the variation in geometry within the mist chambers  226  caused by the shape of the mist plugs  418  may be achieved by varying the geometry the mist chambers  226  themselves. That is, the mist chambers  226  can be modified so that the chambers  226  includes a geometry that changes one or more characteristics of the fluid flow through the chamber, such as inducing a spin, to create a desired output characteristic for the water. However, it should be noted that in embodiments where the variation in the geometry of the mist chambers  226  is created due to the inserted mist plug ring  156 , the showerhead  100  may be manufactured at less cost than in instances where the geometry change is done by varying the chamber itself. 
     The mode selection assembly  408  will now be discussed in more detail.  FIG.  15    is an enlarged view of a portion of the exploded view of  FIG.  2    illustrating the mode selection assembly  408 . With reference to  FIG.  15   , the mode selection assembly  408  may include biasing members  134 ,  136 , a seal support  138 , and a mode seal  128 . The mode seal  128  is shaped to correspond to the seal cavity  350  in the mounting plate  144  and is configured to seal against the top surface of the back plate  146 , which allows a user to selectively direct fluid flow form the handle to a particular set or group of nozzles of the showerhead  100 . For example the mode seal  128  may be a sealing material, such as rubber or another elastomer, and may include a mode select aperture  410  define therethrough. In this manner, the mode seal  128  can be aligned with a particular mode aperture to fluidly connect the handle  102  to the engine  128  and to a particular mode aperture within the engine  128 , while sealing the other mode apertures into the engine  128 . In some embodiments, the mode select aperture  410  may be configured to substantially match the configuration of the mode apertures  284 ,  286 ,  288 ,  290  and so may include a plurality of support ribs  412  spanning across the width of the aperture  410 . However, in other embodiments the ribs  412  may be omitted. The mode seal  128  may also include first and second spring columns  414 ,  416  extending upward from a top surface thereof. 
     The seal support  138  provides additional rigidity and structure to the mode selection assembly  408 , in particular, to the mode seal  128 . The seal support  138  may be, for example, a rigid material such as plastic, metal, or the like. The structure provided by the seal support  138  assists the seal  128  in maintaining a sealed relationship with the back plate  146  when under water pressure. In some embodiments, the seal support  138  may substantially match the configurations of the mode seal  128  and may include apertures for the spring columns  414 ,  416  and mode select aperture  410 . Although the seal support  138  is shown as a separate component from the mode seal  128 , in other embodiments, the seal support  138  may be integrated to the structure of the mode seal  128 . 
     Assembly of the Showerhead 
     With reference to  FIGS.  2  and  4   , assembly of the showerhead  100  will now be discussed in more detail. At a high level the engine  126  is assembled and then connected to the spray head  104  as will be discussed in more detail below. To assemble the engine  126 , the massage mode assembly  152  is assembled and then the flow directing plates, i.e., the front plate  148 , the inner plate  146 , and the back plate  146 , are connected together with the nozzle ring  154  and mist ring  156  connected to the respective plates. In particular, with reference to  FIG.  11   , the pin  168  of the massage assembly  152  is received into the corresponding aperture in the anchor column  360  of the jet plate  164 . The pin-shaped extrusion  374  of the turbine  166  is then slid around the pin  168 . The turbine  166  is oriented so that the cam  372  is located on the opposite side of the turbine  166  that faces the jet plate  164 . With the turbine  166  and jet plate  164  connected via the pin  168 , the shutter  170  is connected to the turbine  166 . Specifically, the cam  372  of the turbine is positioned within the cam aperture  384  of the shutter  170 . 
     Once the massage mode assembly  152  has been constructed, the massage mode assembly  152  is connected to the face plate  148  and is received within the massage chamber  220 . With reference to  FIGS.  2 ,  4 ,  6 B, and  11   , the pin  168  is positioned within the pin recess  224  on the shelf  228  of the face plate  148 . The shutter  170  is oriented such that the constraining edges  388 ,  390  are parallel to the curb walls  222  of the face plate  148 . The curved walls  392 ,  394  of the shutter  170  align with the curved walls of the massage chamber  220 . As shown in  FIG.  4   , the turbine  166  is received within the massage chamber  220  so as to be positioned below a top edge of the annular wall  236  of the massage chamber  220  and the bottom edge of the jet plate  164  seats on top of the annular wall  236 . The annular wall  236  supports the jet plate  164  and prevents the jet plate  164  from frictionally engaging the top of the turbine  166  to help ensure that the turbine  166  has clearance from the jet plate  164  to allow the turbine  166  to rotate without experiencing frictional losses from engagement of the jet plate  164 . The spacing gap between the turbine  66  and the jet plate  164 , as determined by the height of the annular wall  236 , may be varied as desired. 
     In the embodiment shown in  FIG.  4   , the turbine inlets  354 ,  356 ,  358  are on a top surface of the jet plate  164  so that the inlets  354 ,  356 ,  358  do not interfere with the motion of the turbine  166 . However, in other embodiments, the inlets  354 ,  356 ,  358  may be positioned on a bottom surface of the jet plate  164  and the turbine  166  may be spaced a greater distance away from the jet plate  164  than as shown in  FIG.  4    so as to allow further clearance between the top of the turbine  166  and the turbine jet inlets  354 ,  356 ,  358 . It should be noted that the jet plate  164  may be press fit against the sidewalls of the third ring wall  234  so that the jet plate  164  is secured in position and the jet plate  164  helps to secure the pin  168  in position within the pin recess  224 . This configuration secures the massage mode assembly  152  to the facet plate  148 , while still allowing the turbine  166  to rotate within the massage chamber  220 . 
     With reference to  FIGS.  4 ,  6 B, and  14   , once the massage mode assembly  152  is positioned within the massage chamber  220 , the mist plug ring  156  is connected to the face plate  148 . In one embodiment, the mist plugs  398  are received in the respective nozzle chambers  226 , with the bottom end of each mist plug  398  raised above the shelf  228  surround the nozzle outlet  396 . As discussed above with respect to  FIG.  14   , the mist plugs  398  are configured so that water can flow around the mist plugs  398  and into the chamber  226  and out through the mist outlets  396  as will be discussed in more detail below. 
     In some embodiments the mist plugs  398  may be interconnected together by the ring  420  of webbing. In these embodiments, the mist plugs  398  may be easier to handle and assemble than if they were individual plugs that were not interconnected. For example, a user assembling the showerhead  100  can pick up the ring  420 , which may be easier to handle than the individual plugs  398 , and then press fit each plug  398  into its respective chamber  226 . The webbing forming the interconnections between the mist plugs  398  in the ring  420  may also rest on the upper rims of each of the chambers  226 . The length of the mist plugs  398  below the webbing of the ring  420  may not be as long as the depth of the chambers  226 . The bottoms of the mist plugs  398  are thereby spaced apart from the shelf  228  in each of the chambers  226 . 
     After the mist plug ring  156  is connected to the face plate  148 , the inner plate  158  may be connected to the face plate  148 . With reference to  FIGS.  4 ,  6 B- 7 B , the inner plate  158  is coaxially aligned with the face plate  148  and the massage aperture  252  is positioned over the massage chamber  220  so as to allow fluid communication to the massage chamber  220  although the inner plate  158  is positioned above the face plate  148 . 
     The front surface  238  of the inner plate  158  is aligned so as to face the back surface  194  of the face plate  148 . The outer wall  242  of the inner plate  158  sits on top of the first ring wall  230  of the face plate  148  and the first ring wall  244  of the inner plate  158  sits on top of engages the second ring wall  232  of the face plate  148 . The engagement between the outer wall  242  and first ring wall  244  of the inner plate  158  with the first ring wall  230  and second ring wall  232 , respectively, of the face plate  148  defines a second fluid channel  398  (see  FIG.  4   ). That is, the engagement of the walls of the face plate  148  and inner plate  158  fluidly connects the first flow path  248  of the inner plate  158  and the second flow path  214  of the face plate  148  to define the fluid channel  398  within the showerhead  100 . 
     Similarly, the first ring wall  244  and the second ring wall  246  of the inner plate  158  engage with the second ring wall  232  and third ring wall  234  of the face plate  148  to define a third fluid channel  400 , which is formed by the second flow path  250  of the inner plate and the third flow path  216  of the face plate  148 . 
     The two fingers  260 ,  262  of the inner plate  158  jut out over the massage chamber  220  and the massage mode assembly  152 . However, due to the separating walls  264 ,  266 ,  268 , fluid can be selectively distributed to one or more fluid channels either individually or in combination with one another, as discussed in more detail below. 
     With reference to  FIGS.  4 ,  6 A- 8 B , once the inner plate  158  has been aligned with and connected to the face plate  148 , the back plate  146  is connected to the inner plate  158  and face plate  148 . In particular, the perimeter wall  296  of the back plate  146  is aligned with perimeter wall  206  of the face plate  148  so as to engage one another. In this manner, the back plate  146  may be configured so that the back side  276  will be positioned above stream from the front side  278  of the back plate  146 . 
     The first ring wall  298  of the back plate  146  engages the top surface of the outer wall  242  of the inner plate  158 . Thus, the combination of the back plate  146 , the inner plate  158 , and the front plate  148  defines a first fluid channel  396  (see  FIG.  4   ). Additionally, the second ring wall  300  of the back plate  146  engages the first ring wall  244  of the inner plate  158  to define an upper second mode channel  404  (see  FIG.  4   ). As will be discussed in more detail below, the first apertures  254  of the first flow path  248  of the inner plate  158  fluidly connect the upper second mode channel  404  to the second mode channel  398  defined by the face plate  148  and the inner plate  158 . 
     With continued reference to  FIGS.  4 ,  6 A- 8 B , the third ring wall  302  of the back plate  146  engages the second ring wall  246  of the inner plate  158  so that the engagement of the first and second ring walls  244 ,  246  of the inner plate  158  with the second and third ring walls  300 ,  302 , respectively, of the back plate  146  define an upper third mode channel  406 . The upper third mode channel  406  is fluidly connected to the third mode channel  400  via the second set of apertures  256  of the inner plate  158 , as will be discussed in more detail below. 
     The second ring wall  246  of the inner plate  158  and the third ring wall  302  of the back plate  146  define the forth mode channel  402  (see  FIG.  4   ). The fourth mode channel  402  is fluidly connected to the massage mode assembly  152 . 
     The separating walls  264 ,  266 ,  268  of the inner plate  158  engage with the respective separating walls  304 ,  306 ,  308  of the back plate  146  to define the various distribution channels for each mode of the showerhead. For example, separating wall  268  of the inner plate  158  engages with separating wall  306  of the back plate  146 , separating wall  264  of the inner plate  158  engages with separating wall  304  of the back plate  146 , and separating wall  266  of the inner plate  158  engages with separating wall  308  of the back plate  146 . 
     Due to the engagement between the inner plate  158  and the back plate  146 , the first mode aperture  284  is fluidly connected to the fourth mode channel  404 , the second mode aperture  286  is fluidly connected to the first mode channel  396 , the third mode aperture  288  is fluidly connected to the fourth mode channel  402 , and the fourth mode aperture  290  is fluidly connected to the upper third mode channel  406 . In this example, the first mode aperture  284  corresponds to a mist mode, the second mode aperture  286  corresponds to a full body mode, the third mode aperture  288  corresponds to a massage mode, and the fourth mode aperture corresponds to a focused spray mode. However, the above mode examples are meant as illustrative only and the types of modes, as well as the correspondence between particular mode apertures may be varied as desired. 
     The face plate  148 , inner plate  158 , and the back plate  146  may be connected together once assembled. For example, the plates  146 ,  148 ,  158  may be fused such as through ultrasonic welding, heating, adhesive, or other techniques that secure the plates together. Once secured, the face plate  148 , inner plate  158 , and back plate  146 , along with the massage mode assembly  408 , form the engine  126  of the showerhead  100 . This allows the engine  126  to be connected to the spray head  104  as a single component, rather than individually attaching each of the plates. Additionally, the connection between each of the plates may be substantially leak proof such that water flowing through each of the channels within plates is prevented from leaking into other channels. 
     Once the back plate  146  is connected to the inner plate  158 , the mounting plate  144  and the mode selection assembly  408  may be connected to the back plate  146 . With reference to  FIGS.  2 ,  4 ,  8 A,  9 A- 9 B, and  15   , the first and second biasing members  134 ,  136  are received around the first and second spring columns  346 ,  348 , respectively, of the mounting plate  144 . The biasing members  134 ,  136  are then received through the corresponding biasing apertures in the seal support  138 . The mode seal  128  is then connected to the biasing members  134 ,  136  as the biasing members  134 ,  136  are received around the spring columns  414 ,  416  of the mode seal  128 . The mode seal  128  is then positioned within the seal cavity  350  of the mounting plate  144 . 
     In embodiments where the showerhead  100  includes a feedback feature, the spring  140  is received around a portion of the plunger  142  and the plunger and spring are received into the detent pin cavity  342  of the mounting plate  144 . The spring  140  is configured to bias the plunger  142  against the back side  276  of the back plate  146 . 
     After the mode selection assembly  408  and the plunger  142  and spring  140  are connected to the mounting plate  144 , the mounting plate  144  is connected to the spray head  104 . An O-ring  150  is received around the outer surface of the engagement wall  338  of the mounting plate  144 . The fasteners  132   a ,  132   b ,  132   c ,  132   d  are then received through the fastening apertures  334  in the mounting plate  144  and secure into corresponding fastening posts (not shown) extending from a surface within the spray head  104  and/or handle  102 . The fasteners  132   a ,  132   b ,  132   c ,  132   d  secure the mounting plate  144  to the showerhead  100 . 
     Once the mounting plate  144  is connected to the spray head  104 , the engine  126  may be connected to the mounting plate  144 . In particular, the brim  330  of the mounting plate  144  is received within the locking band  282  and the fingers  318  flex to allow the brim  330  to be positioned within the locking band  282  and then snap-fit around the edge of the brim  330 . The lips  320  on each of the fingers  318  extend over a portion of the brim  330  (see  FIG.  4   ) to grip the brim  330 . Because the engine  126  is secured together as a single component, the engine  126  can be quickly attached and detached from the spray head  104  by snap-fit connection to the mounting plate  144 . It should be noted that the fingers  318  may allow the engine  126  to rotate relative to the mounting plate  144 , so as to allow the user to selectively change the mode of the showerhead  100 . However, the lips  320  prevent the engine  126  from separating from the mounting plate  144 , even under water pressure. 
     With reference to  FIGS.  2 ,  4 , and  5   , once the engine  126  is connected to the mounting plate  144 , the nozzle ring  154  is received into the cover  150  and the individual rubber nozzles are inserted into respective nozzle apertures  178 . In some embodiments only certain modes may include rubber nozzles and in these embodiments, the nozzle ring  154  may correspond to a particular mode. However, in other embodiments, every mode may have rubber nozzles and/or may be associated with the nozzle ring. In embodiments where the nozzles are formed through the rubber nozzle ring  154 , the nozzles may be more easily cleaned. For example, during use, the nozzles may be become clogged with sediment or calcification of elements from the water supply source. With rubber nozzles, the nozzles can be deformed or bent to break up the deposits and which are flushed out of the nozzles, whereas with non-flexible nozzles, the nozzles may have to be soaked in a chemical cleaning fluid or cleaned through another time consuming process. 
     With reference to  FIGS.  2  and  4 - 6 B , the cover  150  may be secured to the engine  126 . In particular, the face plate  148  is positioned within the cover chamber  170  with the respective nozzle groups aligning with the respective nozzle apertures in the cover  150 . The alignment brackets  174  are connected to the face plate  148  as the locking tabs  208 ,  210  are received through the bracket apertures  176  in the cover  150 . The locking tabs  208 ,  210  connect the engine  126  to the cover  150  so that as the cover  150  is rotated, the engine  126  will rotate correspondingly. For example, as a user turns the mode selector  118 , the alignment brackets  174  will engage the tabs  208 ,  210  to move the engine  126  along with the cover  150 . 
     With reference to  FIGS.  2  and  3   , the regulator  160  and filter  162  may be received at the threaded end of the handle  106  and secured to the handle  102 . Once the cover  150  is secured to the engine  126  (and thereby to the spray head  104 ), and the filter  162  and regulator  160  (if included) are connected, the showerhead  100  is ready to be connected to a water supply, e.g., J-pipe or other fluid source, and be used. 
     Operation of the Showerhead 
     The operation of the showerhead  100  will now be discussed in more detail. With reference to  FIGS.  2 - 4   , water enters the showerhead  100  through the inlet  108  in the handle  102  or, in instances when the showerhead  100  is a fixed or wall mount showerhead, directly through an inlet to the spray head  104 . As the water enters, the water travels through the inlet conduit  172  to the spray head chamber  175 . The spray head chamber  175  is fluidly connected to the engine inlet  336  in the mounting plate  144 . The fluid flows through the engine inlet  336  and through the mode select aperture  410  of the mode seal  128  that is aligned with the engine inlet  336 . The fluid path of the water after it flows through the mode select aperture  410  depends on the alignment of the engine  126 , in particular the back plate  146 , with the mode selection assembly  408 . 
     For example, during a first mode, such as a fully body spray mode, the mode seal  128  may be aligned such that the mode select aperture  410  is positioned directly over the second mode aperture  286  of the back plate  146 . Fluid flows through the mode select aperture  410 , through the second mode aperture  286  and into the first mode channel  396 . The sealing material of the mode seal  128  prevents fluid from flowing into other mode channel apertures. From the first mode channel  396 , the fluid exits through the outlets  200  in the face plate  148  and into the rubber nozzles of the nozzle ring  154  and out through the cover  150 . 
     During a second mode, such as a mist mode, the engine  126  is rotated via the mode selector  118  to a position where the mode seal  128  is aligned with the first mode aperture  284 . In this example, the mode select aperture  410  of the mode seal  128  is aligned directly with the first mode aperture  284  to fluidly connect the spray head chamber  175  with the upper second mode channel  404 . As water flows into the upper second mode channel  404 , the water flows through first apertures  254  in the inner plate  158  into the second mode channel  398 . From the second mode channel  398 , the fluid flows around the mist plugs  418  into the nozzle chamber  226 . The shape of the mist plugs  418  causes the water to spin, prior to exiting the mist outlets  422 . The spinning of the water causes a misting spray characteristic where the water appears as a fine mist and the droplets are reduced in size. 
     During a third mode, such as a focused spray, the engine  126  is rotated so that the mode select aperture  410  of the mode seal  128  is aligned with the fourth mode aperture  290 . In this example, the fluid flows from the spray head chamber  175  through the fourth mode aperture  290  into the upper third mode channel  406 . The fluid flows into the third mode channel  400  by flowing through the second apertures  256  in the inner plate  158 . Once in the third mode channel  400 , the fluid exits the showerhead through the second group of nozzles  114  of the face plate  148 . 
     During a fourth mode, such as a massage mode, the engine  126  is rotated so that the mode select aperture  410  of the mode seal  128  is aligned with the third mode aperture  288  of the back plate  146 . Fluid flows from the spray head chamber  175  into the fourth mode channel  402 . Once in the fourth mode channel  402 , the fluid impacts the jet plate  164 . With reference to  FIGS.  4 ,  10 , and  11   , as the water impacts the jet plate  164 , the water enters the inlet apertures  366  and optionally the pressure apertures  362 . As the water flows through the inlet apertures  366 , it impacts the blades  368  of the turbine  166 . As the water hits the blades  368  of the turbine  166 , the turbine  166  spins around the pin  168 , which is secured to the face plate  148 . 
       FIG.  16 A  is an enlarged cross-section view of the showerhead  100  illustrating the shutter  170  in a first position.  FIG.  16 B  is an enlarged cross-section view of the showerhead illustrating the shutter  170  in a second position. With reference to  FIGS.  4 ,  10 - 12 , and  16 A- 16 B , as the turbine  166  rotates, the cam  372  moves correspondingly. As the cam  372  is rotated, the cam  372  abuts against the interior sidewall  386  of the shutter  170  and moves the shutter  170 . Due to the eccentricity of the cam  372 , the shutter  170  moves around a center axis of the turbine  166 . However, the movement of the shutter  170  is constrained by the curb walls  222  as they engage the constraining edges  388  of the shutter  170 . As such, as the cam rotates  372  the shutter  170  is moved substantially linearly across the massage chamber  220  in a reciprocating pattern. In particular, the curb walls  222  restrict the motion of the shutter  170  to a substantially linear pathway. 
     For example, as shown in  FIG.  16 A , as the cam  372  rotates in the R direction, the shutter  170  moves in the linear movement M direction across the massage chamber  220 . In this position, fluid flows from the jet plate  164  through the open spaces between each of the turbine blades  368 , past the shutter  170  to the first nozzle bank  120 . Due to the substantially linear motion of the shutter  170 , each of the massage outlets  198  in the first bank  120  open substantially simultaneously. Water exits the face plate  148  through the first bank  120  at substantially the same time. 
     With reference to  FIG.  16 B , as the turbine  166  continues to rotate, the cam  372  continues to move in the R direction, which causes the shutter  170  (due to the curb walls  222 ) to move substantially in the linear movement direction M, but toward the opposite sidewall of the massage chamber  220 . As the shutter  170  moves to the second position, each of the nozzles of the first bank  120  are covered at substantially the same time and each of the nozzles of the second bank  122  are uncovered or opened at substantially the same time. This causes the water flow through each outlet  198  in a particular nozzle bank  120 ,  122  to start and stop simultaneously, creating a “hammer” or more forceful effect. That is, rather than the outlets  198  in a particular nozzle bank  120 ,  122  opening and closing progressively, as is done in conventional massage mode showerheads, the nozzle banks  120 ,  122  operate in a binary manner where each bank  120 ,  122  is either “on” or “off” and in the “on” state every outlet is open and in the “off” state every outlet is closed. 
     The intermittent opening and closing of the outlets in each nozzle bank  120 ,  122  creates a massaging spray characteristic. In particular, the water flows out the first bank  120  and the flows out the second bank  122  and as it impacts a user creates a forceful hammer type effect. The water flow is instantly started and stopped, which creates a more powerful massaging effect. The binary effect allows the massage force to feel more powerful, which allows the showerhead  100  to use a reduced water flow rate and still produce a massaging experience that replicates showerheads with an increased water flow rate. 
     As briefly described above, the user can selectively change the mode of the showerhead  100  by rotating the mode selector  118 . With reference to  FIG.  4   , as the user rotates the mode selector  118 , the cover  150  engages the tabs  208  on the face plate  148  and rotates the engine  126  therewith. As the engine  126  rotates within the spray head  104 , the back plate  146  rotates relative to the mode seal  128  and plunger  142 . 
     As the back plate rotates  146 , the force of the user overcomes the spring force exerted by the spring  140  on the plunger  142  and the biasing members  134 ,  136  to move the back plate  146 . As the user rotates the mode selector  118 , the plunger  142  compresses the spring  140  and disengages from a first detent recess  292 . When the back plate  146  has been sufficiently rotated to reach a second detent recess  292 , the spring  140  biases the plunger  142  into the detent recess  292 . This allows a user to receive feedback, both haptically and optionally through a clicking or mechanical engagement sound, so that the user will know that he or she has activated another mode. In one embodiment, as will be discussed below, the mode seal  128  may be positioned to span across two mode apertures  284 ,  286 ,  288 ,  290  so that two modes of the showerhead  100  may be activated at the same time. In this embodiment, the back plate  146  may include a detent recess  292  for every separate mode and every combination mode, i.e., for four discrete modes there may be seven detent recesses. However, in other embodiments, the combination modes may not have detents associated therewith and/or there may be fewer or more detents and modes for the showerhead. 
     Additionally, as the back plate  146  rotates due to the user&#39;s rotation of the mode selector  118 , the mode seal  128  is positioned at various locations along the back plate  146 . The mode seal  128  may directly align with one or more of the mode apertures  284 ,  286 ,  288 ,  290  to activate a single mode. Alternatively, the mode seal  128  may be positioned such that the mode select aperture  410  is fluidly connected to two of the mode apertures  284 ,  286 ,  288 ,  290 . For example, the mode seal  128  may be positioned between two of the apertures so that a portion of each aperture is sealed and a portion is opened. In this configuration, the water may flow through two mode apertures  284 ,  286 ,  288 ,  290  simultaneously, activating two modes of the showerhead  100  at the same time. The combination modes may be limited to the modes having mode apertures  2984 ,  286 ,  288 ,  290  positioned adjacent to one another or, in other embodiments, the seal  128  may be varied or the showerhead may include two or more mode seals which may allow for the showerhead  100  to activate two or more modes that do not have mode apertures adjacent one another. 
     In an embodiment where the back plate  146  includes the stop bump  294  received into the stop cavity  344  of the mounting plate  144 , the stop bump  294  may rotate within the stop cavity  344  as the user rotates the engine  126 . The stop cavity  344  may be configured to provide a “hard stop” to the user to limit the range that the mode selector  118  can rotate. In particular, the rotation may be determined by the arc length of the stop cavity  344 . As the engine  126  is rotated by the mode selector  118 , the stop bump  294  travels within the cavity  344  until it reaches an end of the cavity  344 . Once the stop bump  294  reaches an end of the cavity  344 , the engagement of the stop bump  294  against the cavity walls prevents the user from further rotating the mode selector  118 . The hard stop helps to prevent damage to the showerhead  100  as a user cannot over-rotate the mode selector  118  past a desired location. 
     Engine Release and Mode Variation Examples 
     Alternative examples of the engine release and attachment and mode apertures will now be discussed.  FIGS.  17 A- 22 B  illustrate another example of a showerhead of the present disclosure having another example of a releasable engine and multiple spray modes of a different configuration than the showerhead of  FIGS.  1 A and  1 B . In the below examples, like numbers are used to describe features that are substantially similar to those in the showerhead of  FIGS.  1 A and  1 B . Additionally, any features not specifically identified below are the same as or similar to features of the showerhead of  FIGS.  1 A and  1 B . 
       FIGS.  17 A and  17 B  are various isometric views of another example of a showerhead of the present disclosure.  FIG.  18    is an exploded view of the showerhead of  FIGS.  17 A and  17 B .  FIG.  19    is a cross-sectional view of the showerhead taken along line  19 - 19  in  FIG.  17 B . With reference to  FIGS.  17 A- 19   , the showerhead  500  may be substantially the same as the showerhead  100  of  FIG.  1 A . However, the showerhead  500  may include another example of an engine release and back plate as compared to the showerhead  100 . In particular, the showerhead  500  may include an engine release assembly  506 . The engine release assembly  506  may be used to selectively secure and release the engine  526  from the spray head  104 . Additionally, the engine  526  may include another example of a back plate  546  and the mounting plate may be omitted in this showerhead example. 
       FIG.  20 A  is a front isometric view of the spray head  104 ′ and handle  102 ′ of the showerhead  500 .  FIG.  20 B  is a rear elevation view of the spray head  104 ′ and handle. With reference to  FIGS.  19 - 20 B , in some examples, the showerhead  500  may include features defined on an interior surface  512  of the spray head  104 ′ that are similar to elements of the mounting plate  144 . This configuration may allow the mounting plate  144  to be omitted and/or differently configured. For example, with reference to  FIG.  20 A  the spray head  104 ′ may include a seal cavity  550  defined by a sealing wall  514  extending downward from the interior surface  512  of the spray head  104 ′. The sealing cavity  550  is configured to receive a mode seal  528  and may include a spring column  552  positioned in a center thereof, the spring column  552  being configured to receive one or more biasing members and extending downward from the interior surface  512 . 
     The spray head  104 ′ may include a spray head inlet  536  in fluid communication with the inlet  108 ′ to the handle  102 ′. The spray head inlet  536  fluidly connects the sealing cavity  550  to the inlet  108 ′ of the handle  102 ′. In this example, the spray head chamber may be defined by the sealing cavity  550  rather than the entire interior of the spray head  104 ′. In other words, the fluid may be channeled directly from the handle  104 ′ into the sealing cavity  550 . 
     Additionally, the spray head  104 ′ may include a detent wall  516  extending downward from the interior surface  512  on an opposite side of a center of the spray head  104 ′ from the sealing cavity  550 . The detent wall  516  defines a detent cavity  542  configured to receive the plunger  142 ′ and the spring  140 ′ for the detent assembly. 
     As the spray head  104 ′ itself may include features such as the seal cavity  550  and the detent cavity  542 , which may be substantially similar to the seal cavity  350  and detent cavity  342  on the mounting plate  144  in  FIG.  9 B , the mounting plate  144  may be omitted. This allows the engine  526 , and in particular the back plate  546 , to be directly connected to the spray head  104 ′ rather than through an intermediate component. By omitting the mounting plate  144 , the showerhead  500  may be cheaper to manufacture and faster to assemble than the showerhead  100  of  FIG.  1 A . 
     With reference to  FIG.  20 A , in this example, the showerhead  500  may also include two or more positioning tabs  554  extending inward from the interior surface  512  toward a center of the spray head  104 ′. The positioning tabs  554  may be connected to the engine  526  to help ensure that the engine  526  remains in the correct position within the spray head  104 ′. 
     With reference to  FIG.  20 B , the spray head  104 ′ may include a cap cavity  536  defined on a back surface of the spray head  104 ′. The cap cavity  536  may be configured to receive one or more components of the engine release assembly  506 . Additionally, the cap cavity  536  provides access to the top surface of the back plate  546 , which as discussed in more detail below, may be used to quickly connect and disconnect the engine  526 . In some embodiments, the cap cavity  536  may include one or more keyed features  518 . For example, the keyed feature  518  may be a protrusion such as a curved sidewall that extends into the cap cavity  536  from a sidewall surrounding and defining the cap cavity  536 . In one embodiment, the spray head  104 ′ may include two keying walls  518  on opposite sides of the cap cavity  536  from one another. The spacing between the two keyed features  518  may be configured based on a desired degree of rotation available to the engine  526  during installation and as such may be modified based on a desired engine rotation within the spray head. 
     The engine release assembly  506  of the showerhead  500  may include a cap  504 , a fastener  508 , and a keyed washer  510 .  FIGS.  21 A and  21 B  illustrate bottom and top views, respectively, of the keyed washer  510 . With reference to  FIGS.  18 ,  21 A, and  21 B , the keyed washer  510  selectively connects to the back plate  546  of the engine  526 . The keyed washer  510  may include a keyed cavity  540  recessed from a bottom surface  568  and the keyed cavity  540  may form a protrusion extending outward from the top surface  570  of the keyed washer  510  (see  FIG.  21 B ). The keyed cavity  540  may have a varying shape including a plurality of keyed protrusions, angled sidewalls, or other keying elements configured to correspond to a keyed protrusion on the back plate  546 , as will be discussed in more detail below. For example, in the embodiment shown in  FIG.  21 A , the keyed cavity  540  may have a five prong shape with the prongs jutting out from a center of the keyed washer  510  and with one of the prongs having a larger width and a curved surface that is differently configured from the other prongs. The center of the keyed washer  510  includes a fastening aperture  520  defined therethrough. It should be noted that the shape and configuration of the keying features of the keying washer  510  shown in  FIGS.  21 A and  21 B  are meant as illustrative only and many other keying features are envisioned. 
     The keyed washer  510  may also include an alignment tab  574  extending outward from a sidewall of the washer  510 . The alignment tab  574  may be positioned adjacent the differently configured prong of the keyed cavity  540 . The alignment tab  574  may form another keying feature for the keyed washer  510  that may interface with different components than the components that interface with the keyed cavity  540 . 
     The engine  526  of the showerhead  500  will now be discussed in more detail.  FIGS.  22 A and  22 B  illustrate top and bottom plan views, respectively, of the back plate of the engine  526 . With reference to  FIGS.  18 ,  19 ,  22 A, and  22 B , the engine  526  may be substantially similar to the engine  126  but may include a modified back plate  546 . In particular, the back plate  546  may include a keyed protrusion  534  extending from a top surface thereof. In this example, the keyed protrusion  534  may be configured to substantially match the keying cavity  540  of the keying washer  510 . For example, as shown in  FIG.  22 A , the keyed protrusion  534  may include a plurality of raised prongs extending outward from a central region with one of the prongs being differently configured than the other four prongs. As with the keying washer  510 , it should be understood that the actual configuration of the keying elements of the keyed protrusion  534  are meant as illustrative only and other keying configurations may be used. The back plate  546  may also include a ledge  538  extending partially around the outer perimeter sidewall. 
     The back plate  546  may also include a plurality of mode apertures  584 ,  586 ,  588 ,  590  defined through a top surface. The mode apertures  584 ,  586 ,  588 ,  590  may be substantially the same as the mode apertures  284 ,  286 ,  288 ,  290  of the back plate  146 . However, in this example, the mode apertures  584 ,  586 ,  588 ,  590  may be differently shaped. For example, in the back plate  546 , the mode apertures  584 ,  586 ,  588 ,  590  may include generally circular apertures including a support rib extending laterally across each aperture. Additionally, the first mode aperture  584  and the second mode aperture  590  may be slightly smaller than the other remaining apertures or otherwise may be differently configured from the remaining apertures  586 ,  588 . 
     The first mode aperture  584  and the fourth mode aperture  590  may be modified to accommodate two additional mode apertures as compared to the back plate  146 . In this example, the showerhead  500  may include a trickle or pause aperture  530  and a low flow aperture  532 . The trickle aperture  530  may be an aperture defined through the top surface of the back plate  526  that has a substantially reduced diameter as compared to the mode apertures  584 ,  586 ,  588 ,  590 . The smaller diameter of the trickle aperture  530  (as compared to the other apertures) limits the water flow therethrough and may be used to substantially reduce the water flow output by the showerhead  500 . For example, when the showerhead  500  is in the trickle mode such that the mode select aperture  410  of the mode seal  528  is aligned with the trickle aperture  530 , the constricted diameter of the aperture  530  limits the water flow into the engine  526  and thus the water flow that flows out of the nozzles. In one embodiment, the trickle aperture  530  may share the outlet nozzles with the first mode aperture  584 . However, in other embodiments the trickle aperture  530  may have a separate set of nozzles or a specific nozzle that functions as a weep hole to allow the reduced amount of fluid to flow out when the showerhead  500  is in the trickle mode. The trickle aperture  530  and low flow aperture  532  will be discussed in more detail below. 
     With reference to  FIG.  22 B , the back plate  546  may also include a plurality of ring walls  522 ,  524  and separating walls  560 ,  562 ,  564 ,  566 . The ring walls  522 ,  524  and the separating walls  560 ,  562 ,  564 ,  566  extend downward from an interior or bottom surface of the back plate  546  and are used to fluidly separate flow from each of the mode apertures  584 ,  586 ,  588 ,  590  from one another and define the flow channels when connected to the face plate  148 ′ as discussed above. The ring walls  522 ,  524  and separating walls  560 ,  562 ,  564 ,  566  may be modified based on a desired flow path through the engine  526  but provide the same functionality as the respective walls in the back plate  146  of the showerhead  100 . 
     As mentioned above, the back plate  546  includes two specialty mode apertures as compared to the back plate  146 . In one example, the back plate  546  includes the trickle aperture  530  and the low flow aperture  532 . These two apertures may be in fluid communication with the same flow paths as the first mode aperture  584  and the fourth mode aperture  590 , respectively, and as such may be in fluid communication with the outlet nozzles of those modes. However, in other embodiments, the trickle aperture  530  and the low flow aperture  532  may have separate outlets or nozzles. 
     Additionally, the trickle aperture  530  and the low flow aperture  532  may be used in combination with the first mode aperture  584  and the fourth mode aperture  590 , respectively. In other words, the mode seal  528  may be positioned so that both the main mode aperture  584 ,  590  and one of the specialty mode apertures  530 ,  532  are in fluid communication with the sealing cavity  536  simultaneously. In this example, the mode seal  528  may be configured to allow the mode and specialty apertures to both be fully open simultaneously or may be configured to allow only a portion of each to be opened simultaneously. 
     The diameter of the trickle aperture  530  may be selected in consideration of the anticipated water pressure from a fluid source, as well as the structural strength of the engine  526  and spray head  104 ′. In particular, the stronger the fluid pressure and the weaker the showerhead components the larger the trickle aperture  530  may be. In some embodiments, the trickle mode may correspond to a seal rather than the trickle aperture  530 . For example, depending on the strength of the showerhead components and/or the anticipated water pressure, the showerhead  500  may include a pause mode where the mode select aperture  410  of the mode seal  528  is aligned with another seal or the top surface of the back plate  546 . In this example, the back plate  546  seals the mode select aperture substantially preventing water from flowing into the engine  526 . 
     Using the trickle aperture  530  or in examples where the showerhead  500  includes a pause mode, the user can substantially reduce or eliminate the water flow out of the showerhead, without having to adjust the water source. For example, the user can change the mode of the showerhead  500  to the trickle mode when he or she is lathering shampoo in his or her hair or doing another activity that does not require water use. Because the water source does not have to be adjusted in order to pause/reduce the flow, the user can quickly reactivate the normal flow through the showerhead  500  and maintain his or her previous temperature settings. This allows a user to have more control of the water flow through the showerhead and save water during bathing without having to adjust the temperature and/or other characteristics of the water supply. 
     With reference to  FIGS.  22 A and  22 B , the low flow aperture  532  may be positioned adjacent the fourth mode aperture  590 . The low flow aperture  532  may be larger than the trickle aperture  530 , but may be smaller than the mode apertures  584 ,  586 ,  588 ,  590 . The low flow aperture  532  is similar to the trickle aperture  530  in that it acts to reduce the flow output by the showerhead  500 , but with an increased water flow rate as compared to the trickle aperture  530 . The low flow aperture  532  may be used in instances where a water supply and/or water usage is monitored or constrained (e.g., septic tank systems), in instances where low flow is desired (e.g., users or locations where an “eco” mode using less water is desired), and/or in instances where the amount of water to be used is desired to be reduced as compared to conventional showerheads but where a user may wish to still shower. 
     In one example, the trickle mode aperture  530  may correspond to a flow of 0.2-0.5 gallons per minute, the low flow mode aperture may correspond to a flow of 1.0-1.4 gallons per minute, and the regular mode apertures may correspond to a flow between 1.5-2.5 gallons per minute. 
     With reference to  FIGS.  18  and  19   , in some instances, the mode seal  528  may be slightly modified from the mode seal  128 . For example, in the showerhead  500  the mode select aperture  410  may be a single opening without any support ribs extending across width. Additionally, in this example, the mode seal  528  may be generally oval or bean shaped as compared to the somewhat trapezoidal shape of the mode seal  128 . Further, in this example, the mode selection assembly may include a single biasing spring  534  and this spring  534  may be received around the spring column  552  of the spray head  104 ′, rather than the spring columns of the mounting plate  144  as in the showerhead  100 . 
     As briefly mentioned above, the engine  526  of the showerhead  500  may be selectively connected and released from the spray head  104 ′. The assembly and disassembly of the showerhead  500  will be discussed in more detail. With reference to  FIGS.  17 A- 21 B , the engine  526  may be assembled in substantially the same manner as described above with respect to  FIG.  1 A . However, in instances where the engine  526  may not include an inner plate  158  (such as shown in  FIG.  19   ), the back plate  526  may be connected directly to the face plate  148 ′ without an intermediate plate. In this example, the massage assembly  152 ′ may be enclosed within the face plate  148 ′ and back plate  546 . Once the plates  148 ′,  546  of the engine  526  are aligned and connected together as described above, the engine  526  is connected to the spray head  104 ′. 
     In particular, the engine  526  may be axially aligned with the handle  102 ′ and inserted into the spray head  104 ′. In some embodiments the engine  526  may be inserted 180 degrees out of phase from its operational position so that the ledge  538  on the back plate  546  engages with the positioning tabs  554  of the spray head  104 ′. Once the ledge  538  engages the positioning tabs  554 , the engine  526  is rotated 180 degrees or until it is in a desired location. When the engine  526  is properly located within the spray head  104 ′, the keyed washer  510  is connected to the back plate  546 . The keyed cavity  540  of the washer  510  is aligned with the keyed protrusion  534  on the back plate  546  and connected thereto. The fastener  508  is then received through the fastening aperture  520  in the keying washer  510  and into the fastening cavity  528  defined on the center of the keyed protrusion  534 . The fastener  508  secures the engine  526  to the keyed washer  510 . 
     Once connected, the alignment tab  574  on the washer  510  is positioned between the two keying walls  518  of the cap cavity  536 . The keying walls  518  and alignment tab  574  help to prevent the engine  526  from rotating 180 degrees when attached to the spray head  104 ′, i.e., helps to secure the engine in a desired location. Additionally, the alignment tab  574  and the keying walls  518  define the degrees of rotation available to the engine  526  to allow a user to change the mode such as by turning the mode selector  118 ′ to rotate the engine  526 . This will be discussed in more detail below. 
     Once the keying washer  510  and engine  526  are located as desired, the cap  504  is received into the cap cavity  536 . The cap  504  provides an aesthetically pleasing appearance to cover the cap cavity and helps to seal the cavity from fluid and debris. In some embodiments, the cap  504  may be press fit, threaded, or otherwise fastened to the spray head  104 ′. After the engine  526  is connected to the spray head  104 ′, the cover  150 ′ is connected to the engine  526  in the same manner as described above with respect to the showerhead  100 . 
     To disconnect the engine  526  from the spray head  104 ′, the cap  504  and fastener  508  are removed and once the cover  150 ′ is removed, the engine  526  can be removed. This allows the showerhead  500  to be assembled, tested, and if the engine  526  does not function properly the engine  526  can be removed and replaced without damaging the spray head  104 ′ or the handle  102 ′ As the spray head  104 ′ and/or handle  102 ′ are often the more expensive components of the showerhead  500  due to the fact that often they include plating, chrome, or other aesthetic finishes, by being able to replace defective components within the showerhead  500  without damaging the finished components, the manufacturing process for the showerhead may be cheaper. In other words, rather than throwing out defective showerheads that include expensive components, the showerhead of the present disclosure can be fixed by replacing the defective component, without damaging the finished components. This also may allow the showerhead to be repaired after manufacturing (e.g., after a user has purchased the showerhead) more easily. 
     During operation, the showerhead  500  may operate in substantially the same manner as the showerhead  100  of  FIG.  1 A , with slight changes based on structural differences in some of the components. For example, with reference to  FIG.  19   , water flows through the handle  102 ′ and enters the spray head  104 ′ through the spray head inlet  536 . Water then flows directly into the seal cavity  550  from the spray head inlet  536  and enters the engine  526  through one or more mode apertures  530 ,  532 ,  584 ,  586 ,  588 ,  589 . The path of the water through the engine  526  depends on the selected mode(s), after traveling through one or more paths, the water exits through one or more nozzle groups. 
     To change modes, the user rotates the mode selector  118 ′, which due to its engagement to the engine  526  causes the engine  526  to rotate relative to the mode seal  528 . The rotation of the engine  526  is limited by the keying walls  518  in the cap cavity  536 . In particular, as the user rotates the mode selector  118 ′ the keyed washer  510 , which is secured to the engine  526  via the fastener  508 , rotates therewith. As the keyed washer  510  rotates within the cap cavity  536 , the alignment tab  574  rotates and when it engages against one of the keying walls  518 , acts to prevent further rotation in that direction. In this manner, the alignment tab  574  and the keying walls  518  act as a hard stop to limit the rotation of the engine  526 . This configuration helps to prevent the engine  526  from over-rotating within the spray head and possibly being damaged. 
     In some embodiments the trickle mode aperture  530  and/or the low flow aperture  532  may be aligned with the mode aperture  410  when the engine  526  is in a choked or over-clocked position. For example, the trickle mode aperture  530  and the low flow aperture  532  may be located at a position on the back plate  546  that does not correspond to the detent recesses  292 ′ or is otherwise at the extreme ends of the rotational spectrum of the engine  526 . In this manner, the user may have to rotate the engine  526  further (via the mode selector  118 ′) than with the other modes. Additionally, in some embodiments, the trickle mode aperture and/or the low flow aperture may be fluidly connected to the fluid inlet when the “normal” mode aperture is connected to the fluid inlet. For example, during the normal mode corresponding to the particular mode aperture adjacent the alternate mode aperture (i.e., trickle mode aperture, low flow aperture), fluid may flow both through the normal mode aperture and the alternate mode aperture. However, in other embodiments, the alternate mode aperture may be sealed during the normal mode. 
     Fixed Mount Example 
     As discussed above, in some embodiments the showerhead  600  may be a fixed or wall mount showerhead. In these examples, the showerhead  600  may not include a handle and may be configured to be fixedly secured to a wall or other structural element.  FIG.  23    is an isometric view of an example of a fixed mount showerhead  600 .  FIG.  24    is a cross-section view of the fixed mount showerhead  600  of  FIG.  23    taken along line  24 - 24  in  FIG.  23   . With reference to  FIGS.  23  and  24   , the fixed mount showerhead  600  may be substantially similar to the showerhead  500  as shown in  FIG.  17 A . However, in this embodiment the showerhead  600  may be configured to attach to a structural feature such as a wall or other fixed location. As such, the handle  104 ′ may be omitted and the spray head  604  may include an attachment assembly for connecting to a fluid source. 
     In one example, the attachment assembly may include a pivot ball connector  606 . The pivot ball  606  may be similar to the pivot ball connector shown in U.S. Pat. No. 8,371,618 entitled “Hidden Pivot Attachment for Showers and Method of Making the Same,” which is hereby incorporated by reference herein in its entirety. The pivot ball  606  is configured to attach to a J-pipe or other fluid source and may include a threaded portion, similar to the threaded portion on the handle  104 ′. Additionally, the showerhead  600  may include a collar  610 , split ring  608 , and one or more seals  616  that interface or connect to the pivot ball connector  606 . For example, the collar  610  may be threadingly attached to the spray head  604  and the pivot ball connector  606  may be pivotably received therein. This allows the spray head  604  to be pivoted or rotated about a fixed location so that a user can reposition the showerhead  600  as desired. The split ring  608  and seal  616  assist in securing the pivot connector  606  to the collar  610  and providing a leak-tight connection. 
     With continued reference to  FIGS.  23  and  24   , the spray head  604  of the showerhead  600  includes an inlet aperture  636  defined through a back surface  612  thereof. The inlet aperture  636  may be somewhat similar to the cap cavity  536  as it may receive the engine connection assembly components such as the keyed washer  510  and fastener  508 . Additionally, the inlet aperture  636  functions to provide water from the showerheads  600  inlet  108 ″ to the seal cavity  550 . For example, the spray head  604  may include a fluid passage  605  between the inlet aperture  636  and the seal cavity  550 . The fluid passage  605  fluidly connects the showerhead inlet  108 ″ to the seal cavity  550 . The fluid passage  605  may be defined by one or more walls extending from an interior surface of the spray head  604  and/or apertures defined within those walls. 
     In operation, water flows from a fluid source into the showerhead inlet  108 ″ and through the pivot ball connector  610 . As the water exists the pivot ball connector  606 , the water flows into the spray head inlet aperture  636  and then to the seal cavity  550  via the fluid passage  605 . Once the water reaches the seal cavity  550  it is transmitted to the engine  526  through one or more of the mode apertures as discussed in more detail above. 
     Massage Mode Assembly Examples 
     The massage mode assembly  152  may be modified to include different features, components, and/or configurations.  FIGS.  25 - 34    illustrate various examples of alternate massage mode assemblies. In each of the examples described below, the shutter may be activated by the turbine and move in an oscillating or sliding manner to selectively cover and uncover banks of nozzles. As with the massage mode assembly  152  in the above examples, the shutter is configured to cover or uncover all the outlets in a particular nozzle bank at substantially the same time. The below examples have been removed from the showerhead to more clearly illustrate the features of the massage mode assembly configurations. In particular, in the below examples the massage chamber is depicted as a standalone chamber rather than a chamber formed by the combination of one or more plates of the engine. These depictions are not meant as limiting and any of the below examples may be used with the showerheads  100 ,  500 ,  600  and in particular with the massage chamber  220  shown above. It should be noted that features identified used similar numbers to features described above may the same as or similar to the features in the above examples. 
     First Example 
       FIG.  25    is a cross-section view of a first example of the massage mode assembly  152 ( 1 ).  FIG.  26 A  is another cross-section view of the massage mode assembly  152 ( 1 ) of  FIG.  25    with the shutter  670  in a first position.  FIG.  26 B  is a cross-section view of the massage mode assembly  152 ( 1 ) as shown in  FIG.  26 B  but with the shutter  670  in a second position. With reference to  FIGS.  25 - 26 B , in this example, the massage mode assembly  152 ( 1 ) may be substantially the same as the massage mode assembly of  FIG.  2   . However, in this example, the shutter  670  may be a round disc having a plurality of lobes  672  or shutter teeth extending radially from the main body. The lobes  672  are positioned around the perimeter of the shutter  670 . The diameter of the lobes  672  may be selected to substantially match or be larger than the outlets in the massage chamber  220 ( 1 ) so that each lobe  672  can cover an outlet. 
     Additionally, in this example, the massage chamber  220 ( 1 ) may include a plurality of engagement teeth  674  or lobes on a bottom surface. The engagement teeth  674  may be similar to the curb walls in that they may influence the movement of the shutter  670  across the chamber  220 ( 1 ). 
     As shown in  FIGS.  26 A and  26 B , as the shutter  670  is moved by the turbine  166 ( 1 ) turning the cam  372 ( 1 ) upon water impact from the jet plate  164 ( 1 ), the lobes  672  selectively cover and uncover the banks  120 ( 1 ),  122 ( 1 ) of nozzles. In this example, the shutter  670  may be restricted to a single translation degree by lobes  672  on the shutter  670  and in operation with the teeth  674  in the chamber  220 ( 1 ). The engagement of the lobes  672  and the teeth  674  acts to restrict the shutter from rotating while allowing the sliding motion. In operation, the shutter may move across one set of nozzles while exposing the opposite set of nozzles in a repetitive motion. 
     Second Example 
       FIGS.  27 - 29    illustrate another example of a massage mode assembly. With reference to  FIGS.  27 - 29   , in this example, the massage mode assembly  752  may include a jet plate  764  having a generally cylindrical shape with two apertures  754  defined in the sidewalls of the cylinder body. Additionally, an annular flange  753  extends around an outer surface of the cylindrical body. The turbine  766  in this example includes a plurality of blades and the outer turbine circular wall is omitted. Additionally, the cam  772  is formed as an eccentrically shaped hemispherical body. 
     The shutter  770  includes a trough shaped-bottom with a cam wall  768  defined on a top surface of the shutter  770  bottom. Additionally, two arms  762  extend upward from the trough on either side thereof. The arms  762  pivotably connect to the jet plate  764  to provide a back and forth swinging motion of the shutter  770 . In other words, the range of the guide arms  762  and the shutter  770  is constrained by the interior walls of the chamber  229 ( 2 ) and clearance limitations of the arms  762  in recesses of the jet plate  764  in the massage mode assembly  752 . 
     Third Example 
       FIGS.  30 - 32    illustrate a third example of a massage mode assembly. With reference to  FIGS.  30 - 32   , the massage mode assembly  852  in this example may include an axially oriented turbine  866  positioned between two guide arms  874  of a shutter  870 . In particular, the shutter  870  includes a concaved curved bottom member that functions to selectively cover and uncover the nozzle banks  120 ( 3 ),  122 ( 3 ). The two guide arms  874  extend on opposite sides from one another and are positioned on the longitudinal edges of the shutter body. Each of the guide arms  874  include two apertures. A first aperture is at a top end of the arms and is configured to receive a securing bar or pin  871 . A second aperture  873  forms a cam follower and is configured to receive the cam  872  of the turbine. 
     As shown in  FIG.  32   , the turbine  866  is axially oriented and positioned between the two arms  874 . In this example, the cam  872  extends from both sides of the turbine  866  with one end being received in the cam aperture  873  of the first guide arm  874  and the other end being received in the cam aperture  873  of the second guide arm  874 . In this embodiment the turbine  866  may resemble a water wheel as the water flow causes the blades to move downward rather than in a carousel or lateral rotational movement. Additionally, the pin  168 ( 3 ) is lodged in a recess or pocket in the downward extending walls of the jet plate to provide a fixed horizontal rotational axis rather than the vertical rotational axis as shown in the showerhead  100 . 
     The jet plate  864  may also include two or more apertures (not shown) that are used to secure the shutter  870 , in particular the guide arms  874  of the shutter  870 , to the jet plate  864 . For example, the upper pin  871  may extend laterally across a width of the jet plate  864  and be secured on either side of the jet plate  864  to secure the shutter  870  within the massage chamber  220 ( 3 ) and provide a pivot point for the movement of the shutter  870 . 
     With reference to  FIGS.  31  and  32   , as the turbine  866  rotates about the pin  168 ( 3 ), the cam  872  causes the guide arms  874  to move laterally in a swing-type movement, which in turn causes the shutter  870  body to move in the lateral sweeping pattern within the massage chamber  220 ( 3 ). 
     Fourth Example 
     In a fourth example, the massage mode assembly may be similar to the third example above, but the guide arms may be separate from the shutter.  FIG.  33    is an isometric view of the fourth example of the massage mode assembly. With reference to  FIG.  33   , in this example, the massage mode assembly may include a pair of guide arms  880 ,  882  that are connected to each other by a pin  871  and connected to a shutter disk  870  by connecting ends  888 . Each guide arm  880 ,  882  may include a pin aperture  884  toward a top thereof and a cam aperture  886  toward a center thereof. The cam aperture  886  may have a generally oval shape and the sidewalls of the guide arms  880 ,  882  may bulge outward on both sides adjacent the cam aperture  886 . The bulge provides additional strength and rigidity to the guide arms  880 ,  882  at the location of the cam aperture  886 . The bottom end of each guide arm  880 ,  882  includes a hemispherical protrusion  888  with the straight face of the hemispherical shape oriented downward toward the top surface of the shutter  870 . 
     With reference to  FIG.  33   , in this example the shutter  870  may be a substantially planar disc and may include two sets of securing prongs  878   a ,  878   b  that extend upward from a top surface of the shutter  870 . Each hemispherical protrusion  888  of the guide arms  880 ,  882  is received between the respective set of securing prongs  878   a ,  878   b  of the shutter  870  to connect the shutter  870  to the guide arms  880 ,  882 . The shutter may also include a plurality of apertures, where depending on the location of the shutter the shutter apertures selectively align with the nozzle outlets to allow fluid to exit the massage chamber. 
     In operation, the eccentric cams  872  of the turbine drive the disk shaped shutter  870  so that it that oscillates in a rotary fashion through the guide arms  880 ,  882 . In this example, the cams  872  attached to the turbine  866  via the pin  168 ( 4 ) are positioned with their eccentricity opposite each other such that the prescribed motion of each cam is opposite to the motion of the other, the opposite motion of the cams restricts the rotational movement of the shutter. In particular, the shutter spins back and forth selectively aligning the shutter apertures with the nozzle outlets. The back and forth rotation is limited to a few degrees in either rotation direction which quickly and selectively opens and closes the nozzle outlets on either side of the massage chamber. The alternating motion of the shutter blocks one set of nozzles while exposing the opposite set of nozzles in a repetitive motion fashion. 
     Fifth Example 
       FIG.  34    is a top perspective view of a fifth example of a massage mode assembly. With reference to  FIG.  34   , in this example, the massage mode assembly  952  may include a support bracket  902  including a plurality of nozzles therethrough and a turbine support pin  942  extending upward from a center area, two shutter pins  960   a ,  960   b  positioned on either side of the support pin  942 . The support bracket  902  may form a portion of the face plate  148  for the showerhead or may replace one or more other plates within an engine of the showerhead. 
     The massage mode assembly  952  may also include two shutter disks  970   a ,  970   b  having a plurality of apertures  958  defined therethrough. Additionally, each of the shutters  970   a ,  970   b  may include a linkage pulley  930 ,  932  extending upward from a top surface. 
     The massage mode assembly  952  may include a turbine  966  having a plurality of blades extending outward form a central hub. The hub may form an eccentric cam  972  for the turbine  966 . Additionally, the massage mode assembly  952  includes two linkage rods  954 ,  956 . The rods  954 ,  956  may be substantially rigid and be configured to attach to both the turbine  966  and the pulleys  930 ,  932  on the shutters  970   a ,  970   b.    
     With continued reference to  FIG.  37   , the two shutter disks  970   a ,  970   b  are received around the shutter pins  960 ,  960   b  on the bracket  920 . The turbine  966  is received around the turbine support pin  942 . A first rod  954  is connected to the first linkage pulley  930  on the first shutter  970   a  and then received around the cam  972  of the turbine  966 . A second rod  956  is connected to the second linkage pulley  932  on the second shutter  970   b  and then also received around the cam  972  of the turbine  966 . In operation, the turbine  966  is driven by water and the shutters  970   a ,  970   b  which are both connected to the single cam  972  are moved correspondingly. In particular, one shutter  970   a  moves across one set of nozzles, blocking the flow through that set of nozzles and the second shutter  970   b  moves to expose a second set of nozzles via alignment of the apertures  958  with the nozzles. As the turbine  966  rotates, the motion of the shutters  970   a ,  970   b  reverses, and the two motions alternately repeat in a continuing sequence to align and displace the apertures  958  on each of the shutters  970   a ,  970   b  with respective sets of nozzles. 
     Conclusion 
     A showerhead including the pulsating assemblies of examples 1-6 may provide a slower, more distinct pulse, as compared to conventional rotary turbine driven shutters. The flow through the nozzles may have an increased pressure as experienced by the user, as each group of nozzles may be “on” or “off”, without a transition between groups. This may allow for the water flow to be directed through only the nozzles in the “open” group, increasing the flow through those nozzles. As an example, the user of a shutter that selectively opens and closes groups of nozzles simultaneously may produce a satisfying massage, even at low water flow rates. Thus, the examples described herein may be used provide a strong feeling “massage mode” for the showerhead, but at a reduced water flow rate, reducing water consumption. Additionally, by aiming the nozzles, or through the physical placement of nozzle groups on the showerhead spatially separated from each other, more distinct individual pulses may be detected by the user, which can result in a more therapeutic massage. 
     It should be noted that any of the features in the various examples and embodiments provided herein may be interchangeable and/or replaceable with any other example or embodiment. As such, the discussion of any component or element with respect to a particular example or embodiment is meant as illustrative only. 
     It should be noted that although the various examples discussed herein have been discussed with respect to showerheads, the devices and techniques may be applied in a variety of applications, such as, but not limited to, sink faucets, kitchen and bath accessories, lavages for debridement of wounds, pressure washers that rely on pulsation for cleaning, car washes, lawn sprinklers, and/or toys. 
     All directional references (e.g., upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above, below, vertical, horizontal, clockwise, and counterclockwise) are only used for identification purposes to aid the reader&#39;s understanding of the examples of the invention, and do not create limitations, particularly as to the position, orientation, or use of the invention unless specifically set forth in the claims. Joinder references (e.g., attached, coupled, connected, joined and the like) are to be construed broadly and may include intermediate members between the connection of elements and relative movement between elements. As such, joinder references do not necessarily infer that two elements are directly connected and in fixed relation to each other. 
     In some instances, components are described by reference to “ends” having a particular characteristic and/or being connected with another part. However, those skilled in the art will recognize that the present invention is not limited to components which terminate immediately beyond their point of connection with other parts. Thus the term “end” should be broadly interpreted, in a manner that includes areas adjacent rearward, forward of or otherwise near the terminus of a particular element, link, component, part, member or the like. In methodologies directly or indirectly set forth herein, various steps and operations are described in one possible order of operation but those skilled in the art will recognize the steps and operation may be rearranged, replaced or eliminated without necessarily departing from the spirit and scope of the present invention. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the spirit of the invention as defined in the appended claims.