Patent Publication Number: US-2023139696-A1

Title: Toolless attachment assembly

Description:
BACKGROUND 
     The present disclosure is related to devices, systems, and methods to attach a motor housing and/or a leg assembly to an electronic height-adjustable desk. 
     SUMMARY 
     In one general aspect, an attachment assembly comprising a connector assembly and a rail. The connector assembly comprises: a first protrusion held in a fixed orientation relative to the connector assembly, a lever pivotable between a first position and a second position, a second protrusion extending from the lever, the second protrusion configured to rotate from a first orientation to a second orientation as the lever pivots from the first position to the second position, and a third protrusion positioned between the first protrusion and the second protrusion. The rail comprises a lip and a cutout in the lip, the cutout located at an insertion position on the rail and is sized to receive the third protrusion. The rail is configured to retain the connector assembly at a retention position on the rail, the retention position being at a different position than the insertion position. Pivoting the lever from the first position to the second position when the connector assembly is positioned within the rail is configured to cause the second protrusion to bear against a bottom surface of the rail, such that the first protrusion and the second protrusion frictionally engage the bottom surface of the rail and the third protrusion frictionally engages the lip to fixedly hold the connector assembly at the retention position. 
     In another general aspect, a furniture assembly comprising a table surface, a leg assembly, and the attachment assembly described above, wherein the connector assembly is disposed on the leg assembly and the rail is disposed on the table surface. 
     In yet another general aspect, a method of assembling an article of furniture comprising a connector assembly and a rail, the connector assembly comprising a first protrusion held in a fixed orientation relative to the connector assembly, a lever pivotable between a first position and a second position, a second protrusion extending from the lever, the second protrusion configured to rotate from a first orientation to a second orientation as the lever pivots from the first position to the second position, and a third protrusion positioned between the first protrusion and the second protrusion, the rail comprising a lip and a cutout in the lip, the cutout sized to receive the third protrusion. The method comprises: aligning the third protrusion with the cutout; inserting the connector assembly into the rail; sliding the connector assembly to a location along the rail; and pivoting the lever from the first position to the second position to cause the second protrusion to bear against a bottom surface of the rail, such that the first protrusion and the second protrusion frictionally engage the bottom surface of the rail and the third protrusion frictionally engages the lip to fixedly hold the connector assembly at a retention position. 
     The foregoing is a summary and thus may contain simplifications, generalizations, inclusions, and/or omissions of detail; consequently, those skilled in the art will appreciate that the summary is illustrative only and is not intended to be in any way limiting. Other aspects, features, and advantages of the devices and/or processes and/or other subject matter described herein will become apparent in the teachings set forth herein. 
    
    
     
       FIGURES 
       The novel features of the various aspects described herein are set forth with particularity in the appended claims. The various aspects, however, as to structures, arrangements, and/or methods of operation may be better understood by reference to the following description, taken in conjunction with the accompanying drawings as follows: 
         FIG.  1    illustrates an example electronic height-adjustable desk assembled according to various aspects of the present disclosure. 
         FIG.  2    illustrates an example slotted rail and angled brackets as installed on a desktop according to one aspect of the present disclosure. 
         FIG.  3    illustrates a connector assembly slideably coupled to the slotted rail according to various aspects of the present disclosure. 
         FIG.  4    illustrates a detailed view of the connector assembly in a loosened configuration according to aspects of the present disclosure. 
         FIG.  5    illustrates an isometric view of the motor housing assembly and the housing attachment assembly according to various aspects of the present disclosure. 
         FIG.  6    illustrates the slideability of the connector assembly toward a proximal end of the slotted rail with the housing attachment assembly in a movable configuration, according to various aspects of the present disclosure. 
         FIG.  7    illustrates the connector assembly in a tightened configuration according to various aspects of the present disclosure. 
         FIG.  8    illustrates a detailed view of the connector assembly in a tightened configuration according to various aspects of the present disclosure. 
         FIG.  9    illustrates an isometric view of the motor housing assembly and the housing attachment assembly in a tightened configuration according to various aspects of the present disclosure. 
         FIG.  10    illustrates a cross-section, through the desktop and the slotted rail, viewing the motor housing assembly and the housing attachment assembly, in a distally-facing direction, in a tightened configuration, according to various aspects of the present disclosure. 
         FIG.  11    illustrates a cross-section, through the desktop and the slotted rail, viewing the motor housing assembly and the housing attachment assembly, in a proximally-facing direction, in a tightened configuration, according to various aspects of the present disclosure. 
         FIG.  12    illustrates the attachment of an additional component to the slotted rail according to various aspects of the present disclosure. 
         FIG.  13    illustrates the slideability of the additional component along the slotted rail according to various aspects of the present disclosure. 
         FIG.  14    illustrates a second connector assembly slideably coupled to the slotted rail according to various aspects of the present disclosure. 
         FIG.  15    illustrates the coupling of a first/second foot assembly to a first/second leg assembly according to various aspects of the present disclosure. 
         FIG.  16    illustrates a first/second lever connection mechanism in a closed position to couple a first/second foot assembly to a first/second leg assembly according to various aspects of the present disclosure. 
         FIG.  17    illustrates a plurality of slotted rails coupled to a desktop according to one alternative aspect of the present disclosure. 
         FIG.  18    illustrates a first connector assembly and a second connector assembly slideably coupled to the slotted rails of  FIG.  17   . 
         FIG.  19    illustrates a first connector assembly and a second connector assembly fixedly coupled to the slotted rails of  FIG.  17   . 
         FIG.  20    illustrates the coupling of a first/second foot assembly to a first/second leg assembly according to various aspects of the present disclosure. 
         FIG.  21    illustrates a first/second lever connection mechanism in a closed position to couple a first/second foot assembly to a first/second leg assembly according to various aspects of the present disclosure. 
         FIG.  22    illustrates an alternative leg attachable to the slotted rails of  FIG.  17   . 
         FIG.  23    illustrates a plurality of the alternative leg attached to the slotted rails of  FIG.  17   . 
         FIG.  24    illustrates a plurality of another alternative leg attached to the slotted rails of  FIG.  17   . 
         FIG.  25    illustrates an example connector assembly wherein the motor housing assembly lacks a bottom surface. 
         FIG.  26    illustrates another perspective of the example connector assembly of  FIG.  25   . 
         FIG.  27    illustrates a detailed view of the connector assembly in a loosened configuration according to an alternative aspect of the present disclosure. 
         FIG.  28    illustrates an isometric view of the motor housing assembly and the housing attachment assembly according to the alternative aspect of  FIG.  27   . 
         FIG.  29    illustrates a detailed view of the connector assembly in a tightened configuration according to the alternative aspect of  FIG.  27   . 
         FIG.  30    illustrates an isometric view of the motor housing assembly and the housing attachment assembly in a tightened configuration according to the alternative aspect of  FIG.  27   . 
         FIG.  31    illustrates a perspective view of a connector assembly according to an alternative aspect of the present disclosure. 
         FIG.  32    illustrates an exploded view of the connector assembly according to the alternative aspect of  FIG.  31   . 
         FIG.  33 A  illustrates a sectional view along line 33—33, where the lever is in the loosened configuration, according to the alternative aspect of  FIG.  31   . 
         FIG.  33 B  illustrates a sectional view along line 33—33, where the lever is in the tightened configuration, according to the alternative aspect of  FIG.  31   . 
         FIG.  34    illustrates a perspective view of the connector assembly prior to being engaged with a desktop rail, according to the alternative aspect of  FIG.  31   . 
         FIG.  35    illustrates a perspective view of the connector assembly initially inserted into the rail, according to the alternative aspect of  FIG.  31   . 
         FIG.  36    illustrates a perspective view of the connector assembly slid to a distal end of the rail, according to the alternative aspect of  FIG.  31   . 
         FIG.  37    illustrates a perspective view of the connector assembly engaged with the rail, where the lever is in the tightened configuration, according to the alternative aspect of  FIG.  31   . 
         FIG.  38    illustrates a sectional view of the connector assembly along line 38—38, according to the alternative aspect of  FIG.  31   . 
         FIG.  39 A  illustrates a sectional view of the connector assembly along line 39—39, where the connector assembly is in the loosened configuration, according to the alternative aspect of  FIG.  31   . 
         FIG.  39 B  illustrates a sectional view of the connector assembly along line 39—39, where the connector assembly is in the tightened configuration, according to the alternative aspect of  FIG.  31   . 
     
    
    
     The foregoing figures are illustrative only and are not intended to be in any way limiting. In addition to the illustrative aspects and features described above, further aspects and features will become apparent by reference to the drawings and the following detailed description. 
     In addition to the foregoing, various other device, system, and/or method aspects are set forth and described in the teachings such as text (e.g., claims and/or detailed description) and/or drawings of the present disclosure. 
     Further, it is understood that any one or more of the following described forms, expressions of forms, and examples can be combined with any one or more of the other following- described forms, expressions of forms, and examples. 
     DESCRIPTION 
     In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols and reference characters typically identify similar components throughout the several views, unless context dictates otherwise. The illustrative aspects described in the detailed description, drawings, and claims are not meant to be limiting. Other aspects may be utilized, and other changes may be made, without departing from the scope of the subject matter presented here. 
     Before explaining the various aspects of the present disclosure in detail, it should be noted that the various aspects disclosed herein are not limited in their application or use to the details of construction and arrangement of parts illustrated in the accompanying drawings and description. Rather, the disclosed aspects may be positioned or incorporated in other aspects, variations, and modifications thereof, and may be practiced or carried out in various ways. Accordingly, aspects disclosed herein are illustrative in nature and are not meant to limit the scope or application thereof. For example, various aspects are disclosed in the context of an electronic height-adjustable desk (e.g., otherwise referred to as an adjustable “standing” desk, “sit-stand” desk, “sit-to-stand” desk, “stand-up” desk, etc.). It is noted that the disclosed aspects may be utilized in the context of a plurality of different types of furniture (e.g., a non-electronic desk, a table, a chair, a cabinet, etc.). More broadly, various disclosed aspects may be utilized to attach a first component to a second component (e.g., a leg, a tray, a housing, an assembly, etc. to any surface of a piece of equipment, a furnishing, etc.). 
     Unless otherwise indicated, the terms and expressions employed herein have been chosen for the purpose of describing the aspects for the convenience of the reader and are not to limit the scope thereof. In addition, it should be understood that any one or more of the disclosed aspects, expressions of aspects, and/or examples thereof can be combined with any one or more of the other disclosed aspects, expressions of aspects, and/or examples thereof, without limitation. 
     Also, in the following description, it is to be understood that terms such as front, back, inside, outside, top, bottom, and the like are words of convenience and are not to be construed as limiting terms. Terminology used herein is not meant to be limiting insofar as devices described herein, or portions thereof, may be attached or utilized in other orientations. The various aspects will be described in more detail with reference to the drawings. 
     Before getting into the details below, aspects of the present disclosure are intended to solve various problems including but not limited to: 1) the requirement to use tools to assemble a piece of furniture, 2) inefficiencies (e.g., labor time) resulting from the use of a plurality of screws or similar hardware to assemble a piece of furniture, 3) more loose/overall pieces (e.g. screws) to assemble a piece of furniture, 4) extensive labor/effort required to assemble a piece of furniture, etc. In this vein, benefits from aspects of the present disclosure include: 1) a tool- free assembly, 2) a way to rigidly attach a first component to a second component in a time-efficient manner, 3) less loose/overall pieces for assembly, 4) minimal labor/effort for assembly, etc. 
       FIG.  1    illustrates an example electronic height-adjustable desk  100  assembled according to various aspects of the present disclosure. In such an aspect, the desk  100  comprises a desktop  102  including a first or top surface  102   a  and a second or bottom surface  102   b , one or more than one leg assembly  104  coupled to the desktop  102  and a foot assembly  106  coupled to each leg assembly  104 . 
     Turning to  FIG.  2   , a slotted rail  108  may extend along axis A-A lengthwise between a proximal portion (proximal direction marked “P”) and a distal portion (distal direction marked “D”) of the second or bottom surface  102   b  of the desktop  102 . Axis A-A may be centrally located between a left or first side  110  and a right or second side  112  of the desktop  102 . A first angled bracket  114  may be coupled to and/or cap a proximal end of the slotted rail  108  and may extend perpendicular to axis A-A along axis B-B, between the left or first side  110  and the right or second side  112 , to support the desktop  102  and anticipated desktop loads. A second angled bracket  116  may be coupled to and/or cap a distal end of the slotted rail  108  and may extend perpendicular to axis A-A along axis C-C, between the left or first side  110  and the right or second side  112 , to support the desktop and anticipated desktop loads. According to various aspects, additional transverse brackets (not shown) may be positioned between the proximal end and the distal end of the slotted rail to further support the desktop  102 . In further aspects, the slotted rail  108  may comprise multiple slots extending between the proximal end and the distal end of the slotted rail. 
     According to various aspects of the present disclosure, the slotted rail  108  and/or the angled brackets  114 / 116  may be pre-installed on the desktop  102  by a manufacturer (e.g., attached via screws and/or adhesive, etc.). In such an aspect, the desk  100  may be quickly assembled as disclosed herein without the need to attach the slotted rail to the desktop  102 . 
     According to one aspect, the slotted rail  108  may comprise an aluminum slotted rail including at least one standard T-slot (see  FIG.  10   ). In other aspects, other materials (e.g., other metals, woods, composites) comprising at least one T-slot may be used. In yet other aspects, a slot configuration/profile different from a T-slot may be used. 
     According to one alternative aspect, the slotted rail  108  may be inset into the second or bottom surface  102   b  of the desktop  102 . According to one aspect, a top surface  118  of slotted rail  108  may be flush with the second or bottom surface  102   b . According to another alternative aspect, a slot (e.g., a T-slot formed via a router) may extend along axis A-A lengthwise between the proximal portion and the distal portion of the second or bottom surface  102   b . According to such an aspect, the slot may be integral to or part of the second or bottom surface  102   b  of the desktop  102  to supplant the use of a slotted rail  108 . 
     Turning now to  FIG.  3   , a connector assembly  120  may be slideably coupled to the slotted rail  108 . Notably, according to various aspects of the present disclosure, the connector assembly  120  may comprise a leg assembly  104  coupled to a housing  122 . According to various aspects of the present disclosure the connector assembly  120  may be preassembled by a manufacturer. In such an aspect, the desk  100  may be quickly assembled as disclosed herein without the need to separately couple the leg assembly  104  and the housing  122 . An example connector assembly  120  is shown and discussed in reference to  FIGS.  25  and  26    below. 
       FIG.  4    illustrates a detailed view of a connector assembly  120 , in a loosened configuration, according to various aspects of the present disclosure. The connector assembly  120  can include a first protrusion  146  and a second protrusion  168  ( FIG.  8   ), the functions of which are described in more detail below. Further, the connector assembly  120  can include a first male anchor  124  and a second male anchor  126  are coupled to a bottom surface  136  of the housing  122 . The anchors  124 ,  126  can also collectively be referred to as “third protrusions.” According to one aspect of the present disclosure, each of the first male anchor  124  and the second male anchor  126  comprise a neck-like spacer  128  and a washer-shaped head  130 . In such an aspect, referring again to  FIG.  4   , the spacer  128  and the head  130  of the first male anchor  124  are coaxially aligned with axis D-D and the spacer  128  and the head  130  of the second male anchor  126  are coaxially aligned with axis E-E. In such an aspect, axis D-D and axis E-E may be perpendicular to axis F-F (see  FIG.  5   ) which extends lengthwise between a proximal end (proximal direction marked “P”) and a distal end (distal direction marked “D”) of the housing  122 . Axis F-F may be centrally located between a first side  132  and a second side  134  of the housing  122 . Notably, axis F-F and axis A-A may be aligned in the same plane. Further in such an aspect, the neck-like spacer  128  and the washer-shaped head  130  of the first male anchor  124  and the second male anchor  126  are configured to mimic the shape of the T-slot of the slotted rail  108  (see  FIG.  10   ). More specifically, each spacer  128  is configured and dimensioned to be insertably and slideably received in portion “H” defined by the slotted rail  108  and each head  130  is configured and dimensioned to be insertably and slideably received in portion “I” defined by the slotted rail  108  (see  FIG.  10   ). 
     Referring again to  FIG.  4   , according to one aspect of the present disclosure each of the first male anchor  124  and the second male anchor  126  are not adjustable. More specifically, a distance “J” defined between a top surface of each head  130  and a bottom surface  136  of the housing  122  cannot be altered (see  FIG.  10   ). In such an aspect distance “J” may be specifically calibrated for a particular/standard slotted rail  108  with tight tolerances. According to one aspect, the spacer  128  and head  130  of each of first male anchor  124  and the second male anchor  126  may be precision machined as one piece. According to such an aspect, the first male anchor  124  and the second male anchor  126  may be fixedly attached to the bottom surface  136  of the housing  122 . In one aspect, the first male anchor  124  and the second male anchor  126  may be welded to the bottom surface  136  of the housing  122 . In another aspect, each of the first male anchor  124  and the second male anchor  126  may further define an aperture along axes D-D and E-E respectively. In such an aspect, a sleeved screw (e.g., that bottoms out at the desired distance “J”), may be inserted in each respective aperture to fixedly attach the first male anchor  124  and the second male anchor  126  to the bottom surface  136  of the housing  122 . According to yet another aspect of the present disclosure, the first male anchor  124  and the second male anchor  126  may be integrated on the bottom surface  136  of the housing  122  via a die casting process. Namely,  FIGS.  25  and  26    illustrate an example connector assembly  120  wherein the housing  122  lacks a bottom surface  136 . In such an example, a bottom surface/plate  136  comprising the first male anchor  124  and the second male anchor integrated thereon, may be die casted for attachment to the housing  122  (e.g., via welding, screws/bolts to existing/available holes e.g.,  138 ). Such a die casted bottom surface/plate  136  would serve at least three purposes: i) protect the motor  140  and gear assembly  142 , ii) make the housing  122  rigid, and iii) provide a way to simply, quickly, and rigidly attach a connector assembly  120  to a desk  100 . The motor  140  and gear assembly  142  within the housing  122  can be configured to extend and retract the leg assembly  104 . Lastly, according to one alternative aspect of the present disclosure, a housing  122  of a connector assembly  120  (see, e.g.,  FIGS.  25  and  26   ) may be fixedly inserted within and/or attached to a rectangular steel tube or sleeve to which the first male anchor  124  and second male anchor  126  are attached as described herein. 
     Referring again to  FIG.  4   , according to an alternative aspect of the present disclosure, each of the first male anchor  124  and the second male anchor  126  may be adjustable. In another aspect of the present disclosure the first male anchor  124  may be adjustable and the second male anchor  126  may not be adjustable. In yet another aspect of the present disclosure, the first male anchor  124  may not be adjustable and the second male anchor  126  may be adjustable. According to such aspect, adjustability of the first male anchor  124  and/or second male anchor  126  may account for material variability (e.g., of the first male anchor  124  and/or the second male anchor  126  affecting distance “J,” thickness “K” of the lip of the slotted rail  108 , etc.). According to one aspect, to realize adjustability, the first male anchor  124  and/or the second male anchor  126  may define an aperture along axes D-D and E-E respectively. In such an aspect, a screw may be inserted in each respective aperture to fixedly attach the first male anchor  124  and the second male anchor  126  to the bottom surface  136  of the housing  122 . Notably, in such an aspect, the spacer  128  may be compressible (e.g., are constructed from or include a compressible material) to selectively adjust the distance “J” to ensure that the motor housing  122  is rigidly attached to the slotted rail  108 . 
     Turning again to  FIG.  4   , a detailed view of a connector assembly  120  in a loosened configuration, according to various aspects of the present disclosure, is disclosed. In particular, the housing  122  comprises a housing attachment assembly (shown generally at  144 ). More specifically, in such aspects the housing attachment assembly  144  comprises a first male anchor  124  and a second male anchor  126  (e.g., described above) coupled to a first component surface  136  (e.g., a bottom surface of the housing  122 , a surface of a die casted plate, a bottom surface of a rectangular steel tube, etc.), a first protrusion  146  (also referred to as, in some instances, a “fulcrum” or “pivot”) located on a distal portion of the first component surface  136  and a lever assembly  148  coupled to a proximal end/portion of the first component (e.g., housing  122 ). Notably, the lever assembly  148  comprises a base  150 , a lever  152 , and a pin  154 , wherein the lever  152  is configured to rotate (e.g., counterclockwise in  FIG.  4   ) about the pin  154  between a first position  156  (see  FIGS.  3 - 6   , e.g., where the housing attachment assembly  144  is in a movable configuration) and a second position  158  (see  FIGS.  7 - 11   , e.g., where the housing attachment assembly  144  is in a fixed/rigid configuration). 
     In view of  FIG.  4   , in the first position  156 , a first gap  160  exists between a top surface of the head  130  of the first male anchor  124  and an interfacing surface  162  of the slotted rail  108  and a second gap  164  exists between a top surface of the head  130  of the second male anchor  126  and the interfacing surface  162  of the slotted rail  108 . In such an aspect, the first gap  160  may be larger than the second gap  164 . Notably, in such an aspect, due to such a gap difference, axis F-F varies from axis L-L by an angle “M”. In such an aspect, axis L-L may be parallel to a plane defined by the bottom surface  102   b  of the desktop  102 . Furthermore, angle “M” may comprise an acute angle sufficient to produce a first gap  160  and a second gap  164  that enables the housing  122  to slide longitudinally, between the proximal end and the distal end of the slotted rail  108 , within the slot (e.g. T-slot). Furthermore, the angle “M” may comprise an acute angle sufficient to prevent a frictional binding between the first protrusion  146  and the top surface  118  of the slotted rail  108  and/or a wedging between the first protrusion  146  and the second male anchor  126  that would inhibit distal and/or proximal slideability of the housing  122 . 
     Notably, referring back to  FIG.  2   , the top surface  118  of the slotted rail  108  may further define an aperture  166  configured/sized to insertably receive the head  130  of each of the first male anchor  124  and the second male anchor  126 . In such an aspect the first male anchor  124  may be inserted through the aperture  166  followed by the second male anchor  126 , or vice versa, to slideably couple the housing  122  of the connector assembly  120  to the slotted rail. In another aspect of the present disclosure the first angled bracket  114  and/or the second angled bracket  116  may define a cutout (not shown) at the proximal end and/or distal end of the slotted rail  108  respectively that permits the first male anchor  124  and the second male anchor  126  to slide into the slot of the slotted rail  108  and the motor housing assembly to slide onto the slotted rail  108 . In such an aspect, a plug (not shown) may be inserted into the slot of the slotted rail  108  and/or attached to the first angled bracket  114  and/or the second angled bracket  116  to prevent the inserted housing  122  from sliding out the proximal end and/or distal end of the slotted rail  108 . 
       FIG.  5    illustrates an isometric view of the housing  122  and the housing attachment assembly  144  according to various aspects of the present disclosure. Notably, in view of  FIG.  5   , the lever assembly  148  of the housing attachment assembly  144  comprises the pin  154  that extends along axis G-G through the base  150  and the lever  152  to rotatably couple the lever  152  to the base  150 . In such an aspect, the axis G-G may be perpendicular to axis F- F. 
       FIG.  6    illustrates the slideability of the connector assembly  120  toward a proximal end of the slotted rail  108  with the housing attachment assembly  144  in a movable configuration. For example, after insertion of the first male anchor  124  and the second male anchor  126  through aperture  166  defined in the top surface  118  of the slotted rail  108 , the connector assembly  120  may be slid proximally toward the proximal end of the slotted rail  108  to a desired position. Notably, the slotted rail  108  and the housing attachment assembly  144  described herein permits that connector assembly  120  to be located at various positions along the slotted rail. According to various aspects, no designated position is established, thus enabling a customizable distance between more than one connector assembly  120  (see  FIG.  14   ). 
       FIG.  7    illustrates the connector assembly  120  in a tightened configuration according to various aspects of the present disclosure (e.g., lever  152  rotated to an upright second position  158 ). More specifically, in view of  FIG.  8   , lever  152  of the lever assembly  148  has been rotated (e.g., counterclockwise in  FIG.  8   ) about pin  154  to the second position  158 . Notably, in the second position  158 , the housing attachment assembly  144  is in a fixed/rigid configuration. 
     In view of  FIG.  8   , in the second position  158 , the first gap  160  and the second gap  164  have been closed/eliminated. More specifically, the lever  152  of the lever assembly  148  may further comprise a second protrusion  168  (also referred to as, in some instances, a “cam”). In such an aspect, as the lever  152  is rotated about the pin  154  the second protrusion  168  is configured and sized to interface with at least a portion of the top surface  118  of the slotted rail  108  such that the first gap  160  and the second gap  164  are closed/eliminated. In such an aspect, the top surface of each head  130  is frictionally and/or rigidly engaged with the interfacing surface  162  of the slotted rail  108 . Further in such an aspect, the cam is configured and sized to interface with at least a portion of the top surface  118  of the slotted rail  108  such that frictional binding between the first protrusion  146  and the top surface  118  of the slotted rail  108  and/or wedging between the first protrusion  146  and the second male anchor  126  occurs. In such an aspect, movement is prevented/inhibited in all directions rendering the housing  122  rigidly attached to the slotted rail  108  at that position along the slotted rail  108 . Notably, in view of  FIG.  8   , the first protrusion  146  and/or second protrusion  168  are configured and sized such that axis F-F is substantially parallel to the plane defined by the bottom surface  102   b  of the desktop  102  (e.g. angle “M” is zero). According to various aspects, in view of  FIG.  10   , the first protrusion  146  and/or second protrusion  168  may be sized to a dimension equal to or slightly greater than the distance “J” less the distance “K”. 
       FIGS.  9 - 11    illustrate various aspects of the disclosed tightened configuration. Initially,  FIG.  9    illustrates an isometric view of the housing  122  and the housing attachment assembly  144  in the tightened configuration. Next,  FIG.  10    illustrates a cross-section, through the desktop  102  and the slotted rail  108 , viewing the housing  122  and the housing attachment assembly  144 , in a distally-facing direction, in the tightened configuration. Next,  FIG.  11    illustrates a cross-section, through the desktop  102  and the slotted rail  108 , viewing the housing  122  and the housing attachment assembly  144 , in a proximally-facing direction, in the tightened configuration. 
     More specifically, in view of  FIG.  9    and  FIG.  11   , according to various aspects of the present disclosure, the first protrusion  146  may extend across the bottom surface  136  of the housing  122  along axis N-N between the first side  132  and the second side  134  of the housing  122 . In such aspects, axis N-N may be perpendicular to axis F-F (see  FIG.  5   ). Further, in such aspects, the first protrusion  146  may extend across the bottom surface  136  between the first side  132  and the second side  134  at least a distance equal to or greater than a width of the slotted rail  108  (see  FIG.  11   ). In such an aspect the surface area of the first protrusion  146  interfacing with the top surface  118  of the slotted rail  108  in the second position  158  is maximized. In alternative aspects, the first protrusion  146  may extend across the bottom surface  136  between the first side  132  and the second side  134  a distance less than a width of the slotted rail  108 . In such an aspect the surface area of the first protrusion  146  interfacing with the top surface  118  of the slotted rail  108  in the second position  158  is not maximized, but is sufficient to tighten the housing  122  and inhibit movement in all directions. In yet another alternative aspect, the first protrusion  146  may comprise a first fulcrum portion (not shown) and a second fulcrum portion (not shown), extending along axis N-N, wherein no fulcrum portion exists over the slot (i.e. T-slot) of the slotted rail  108  (e.g., lacks a fulcrum portion corresponding to portion “H” in  FIG.  10   ). In various aspects of the present disclosure the first protrusion  146  comprises the same material as the motor housing  122  (e.g. sheet metal, aluminum, etc.). In alternative aspects, the first protrusion  146  comprises a hard rubber or composite material to frictionally engage the top surface  118  of the slotted rail  108  to further inhibit movement of the housing  122  in the tightened configuration and/or to inhibit movement when actuating the lever  152 . 
     Further, in view of  FIG.  9    and  FIG.  10   , according to various aspects of the present disclosure, the second protrusion  168  may comprise a first portion  168   a  and a second portion  168   b  separated by the base  150  of the lever assembly  148 . Notably the first portion  168   a  and the second portion  168   b  may be aligned with each other along axis O-O (see  FIG.  9   ). In such aspects, axis O-O may be perpendicular to axis F-F (see  FIG.  5   ). Further, in such aspects, the first portion  168   a  may extend across a first lever portion  152   a  (see  FIG.  9   ) at least a distance to maximize a surface area interfacing with the top surface  118  of the slotted rail  108  in the second position  158  (see  FIG.  10   ). Similarly, in such aspects, the second cam portion  168   b  may extend across a second lever portion  152   b  at least a distance to maximize a surface area interfacing with the top surface  118  of the slotted rail  108  in the second position  158  (see  FIG.  10   ). In alternative aspects, the first portion  168   a  and the second portion  168   b  may not extend across a full width of the first lever portion  152   a  and the second lever portion  152   b  respectively but is nonetheless sufficient to tighten the housing  122  and inhibit movement in all directions. In various aspects of the present disclosure the first portion  168   a  and the second portion  168   b  may comprise the same material as the lever  152  (e.g., polymer, composite, etc.). In alternative aspects, the first portion  168   a  and the second portion  168   b  may comprise a hard rubber or composite material to frictionally engage the top surface  118  of the slotted rail  108  to further inhibit movement of the housing  122  in the tightened configuration and/or to inhibit movement when actuating the lever  152 . 
     Next,  FIG.  12    illustrates the attachment of an additional component  170  to the slotted rail  108 . According to various aspects of the present disclosure the additional component  170  (e.g., a control box comprising various electronics/controllers to control the motors  140  of the electronic height-adjustable desk  100 , a cord management box/tray, etc.) may comprise a rectangular steel tube or sleeve. More specifically, in such aspects, the additional component  170  may comprise a housing attachment assembly  144  including the first male anchor  124  and the second male anchor  126  coupled to its bottom surface as described herein (e.g., see  FIG.  4   ). Further, according to various aspects of the present disclosure, the additional component  170  may be slideably received within the slot (e.g., T-slot) of the slotted rail  108  (e.g., via aperture  166 ) as described herein. Notably, according to one aspect, the housing attachment assembly  144  of the additional component  170  may not comprise a first protrusion  146  and/or a lever assembly  148 . Namely, in such an aspect, the additional component  170  may remain movable along axis A-A within the slotted rail  108  between at least one first position and at least one second position (e.g., compare  FIG.  12    and  FIG.  13   ). Further in such an aspect, gravity and resulting friction between the head  130  of each of the first male anchor  124  and the second male anchor  126  and the interfacing surface  162  of the slotted rail  108  may keep the additional component  170  from undesired movement. According to an alternative aspect, the housing attachment assembly  144  may further comprise a first protrusion  146  and/or a lever assembly  148  that function as described herein. 
     Next,  FIG.  13    illustrates the slideability of the additional component  170  along the slotted rail  108 . Notably, viewing  FIG.  13    in light of  FIG.  12   , the additional component  170  may also serve the purpose of hiding/maintaining/managing power cords and/or wired interfaces  172  between the connector assembly  120  and the additional component  170  (e.g., control box). 
     Next,  FIG.  14    illustrates a second connector assembly  120   a  slideably coupled to the slotted rail  108  according to various aspects of the present disclosure. Notably, the slot (e.g., T-slot) of the slotted rail  108  may also serve the purpose of hiding/maintaining/ managing power cords and/or wired interfaces  172   a  between the second connector assembly  120   a  and the additional component  170  (e.g., control box). 
     Next,  FIGS.  15  and  16    illustrate the coupling of a first foot assembly  174  and a second foot assembly  174   a  to a first leg assembly  104  and a second leg assembly  104   a , respectively. Referring back to  FIG.  14   , for example, the first leg assembly  104  may comprise a first foot connection mechanism  176  and the second leg assembly  104   a  may comprise a second foot connection mechanism  176   a . According to one aspect of the present disclosure, each of the first foot connection mechanism  176  and the second foot connection mechanism  176   a  may comprise a cylindrical protrusion including a groove surrounding a circumference of the cylindrical protrusion. Accordingly, referring again to  FIG.  15   , the first foot assembly  174  may comprise a first lever connection mechanism  178  and floor pads  180 . In such an aspect, the first lever connection mechanism  178  may be configured to interface (e.g., slide into) the groove of the cylindrical protrusion of the first foot connection mechanism  176  to fixedly attach the first foot assembly  174  to the first leg assembly  104  as the first lever connection mechanism  178  is translated between an open position and a closed position (see  FIG.  15    to  FIG.  16   ). Similarly, the second foot assembly  174   a  may comprise a second lever connection mechanism  178   a  and floor pads  180   a . In such an aspect, the second lever connection mechanism  178   a  may be configured to interface (e.g., slide into) the groove of the cylindrical protrusion of the second foot connection mechanism  176   a  to fixedly attach the second foot assembly  174   a  to the second leg assembly  104   a  as the second lever connection mechanism  178   a  is translated between an open position and a closed position (see  FIG.  15    to  FIG.  16   ). Furthermore, according to various aspects of the present disclosure, the floor pads  180 / 180   a  may be adjustable to level the desk  100  with a floor. 
     Next,  FIG.  17    illustrates a plurality of slotted rails coupled to a desktop according to one alternative aspect of the present disclosure. Similar to  FIG.  2   , a first slotted rail  108   a  and a second slotted rail  108   b  may extend lengthwise between a proximal portion and a distal portion of the second or bottom surface  102   b  of the desktop  102 . However, the first slotted rail  108   a  may run parallel to and in proximity to the left or first side  110  of the desktop  102  and the second slotted rail  108   b  may run parallel to and in proximity to the right or second side  112  of the desktop  102 . Furthermore, a third slotted rail  108   c  may extend perpendicular to and between the first slotted rail  108   a  and the second slotted rail  108   b  on a proximal portion of the second or bottom surface  102   b  and a fourth slotted rail  108   d  may extend perpendicular to and between the first slotted rail  108   a  and the second slotted rail  108   b  on a distal portion of the second or bottom surface  102   b . In view of  FIG.  17   , such an arrangement of slotted rails around the periphery of the desktop  102  enables a plurality of connector assemblies  120  to be located in a plurality of positions (e.g., middle of third slotted rail  108   c  and fourth slotted rail  108   d , proximal end and distal end of slotted rail  108   a  and proximal end and distal end of slotted rail  108   b , etc.) as well as provide support to the desktop  102  and anticipated desktop loads. In further aspects, the slotted rails  108   a / 108   b / 108   c / 108   d  may comprise multiple slots extending along the respective slotted rails. 
     According to various aspects of the present disclosure, the slotted rails  108   a / 108   b /  108   c / 108   d  may be pre-installed on the desktop  102  by a manufacturer (e.g., attached via screws and/or adhesive, etc.). In such an aspect, the desk  100  may be quickly assembled as disclosed herein without the need to attach the slotted rails  108   a / 108   b / 108   c / 108   d  to the desktop  102 . 
     According to one aspect, the slotted rails  108   a / 108   b / 108   c / 108   d  may each comprise an aluminum slotted rail including at least one standard T-slot (see  FIG.  10   ). In other aspects, other materials (e.g., other metals, woods, composites) comprising at least one T-slot may be used. In yet other aspects, a slot configuration/profile different from a T-slot may be used. 
     According to one alternative aspect, the slotted rails  108   a / 108   b / 108   c / 108   d  may be inset into the second or bottom surface  102   b  of the desktop  102 . According to one aspect, the top surfaces of the slotted rails  108   a / 108   b / 108   c / 108   d  may be flush with the second or bottom surface  102   b . According to another alternative aspect, a slot (e.g., a T-slot formed via a router) may be integral to or part of the second or bottom surface  102   b  of the desktop  102  to supplant the use of a slotted rails  108   a / 108   b / 108   c / 108   d . 
     Referring again to  FIG.  17   , each of the slotted rails  108   a / 108   b / 108   c / 108   d  may define one or more than one aperture  166  configured/sized to insertably receive the head  130  of each of the first male anchor  124  and the second male anchor  126 . In such an aspect the first male anchor  124  may be inserted through the aperture  166  followed by the second male anchor  126  to slideably couple each housing  122  of each connector assembly  120  to each respective slotted rail  108   a / 108   b / 108   c / 108   d . Furthermore, according to various aspects of the present disclosure, a proximal end and/or a distal end of a slotted rail (e.g.,  108   a  and/or  108   b ) may permit the first male anchor  124  and the second male anchor  126  to slide into the slot of the slotted rail (e.g.,  108   a  and/or  108   b ) and the housing  122  to slide onto the slotted rail (e.g.,  108   a  and/or  108   b ). In such an aspect, a plug  182  may be inserted into the slot of the slotted rail (e.g.,  108   a  and/or  108   b ) to prevent the inserted housing  122  from sliding out the proximal end and/or distal end of the slotted rail (e.g.,  108   a  and/or  108   b ). 
     Next,  FIG.  18    illustrates a first connector assembly  120  and a second connector assembly  120   a  slideably coupled to the third slotted rail  108   c  and the fourth slotted rail  108   d , respectively. Notably, according to one alternative aspect of the present disclosure, and in reference to  FIG.  4   , the first protrusion  146  may optionally be replaced by and/or interchanged with a second lever assembly  148   a . The second lever assembly  148   a  will function in a manner similar to lever assembly  148 , as described herein, to rigidly lock each connector assembly  120 / 120   a  to the respective slotted rails  108   c / 108   d . In such an aspect,  FIG.  18    illustrates each respective lever in a first position  156  (see  FIG.  4   . e.g., where each housing attachment assembly  144  is in a movable configuration). Similarly,  FIG.  19    illustrates each respective lever in a second position  158  (see  FIG.  8   , e.g., where each housing attachment assembly  144  is in a fixed/rigid configuration). 
     Next, referring back to  FIGS.  15  and  16    respectively,  FIG.  20    similarly illustrates the coupling of a first/second foot assembly  174 / 174   a  to a first/second leg assembly  104 / 104   a  and  FIG.  21    similarly illustrates a first/second lever connection mechanism  178 / 178   a  in a closed position to couple the first/second foot assembly to the first/second leg assembly. 
     Next,  FIG.  22    illustrates an alternative leg  184  attachable to the slotted rails of  FIG.  17   . According to one aspect of the present disclosure, an end interfacing with slotted rail  108   a  may comprise a protruding threaded portion and a male anchor (e.g., similar to  FIG.  4   ) that defines an internally threaded aperture. In such an aspect, the male anchor may be inserted into the slot (e.g., via aperture  166  or the proximal/distal end of the slotted rail  108   a ) and rotated to thread the male anchor onto the protruding threaded portion such that the top surface of the head engages the interfacing surface of the slotted rail to fixedly attach the alternative leg  184  to the slotted rail. Notably, the alternative leg may be positioned at any desired positon along the slotted rail  108   a . Similarly,  FIG.  23    illustrates a plurality of the alternative legs  184 / 184   a / 184   b / 184   c  attached to the slotted rails of  FIG.  17    in a manner similar to that as described in  FIG.  22   . 
     Next,  FIG.  24    illustrates a plurality of another alternative leg  185 / 185   b / 185   c / 185   c  attached to the slotted rails of  FIG.  17    in a manner similar to that as described in  FIG.  22   . Notably, in view of  FIG.  23   , each alternative leg  185 / 185   a / 185   b / 185   c  may comprise a caster  186 / 186   a / 186   b / 186   c  such that the desk  100  is easily moved. 
     Next,  FIG.  27    illustrates a detailed view of the connector assembly  120  in a loosened configuration according to an alternative aspect of the present disclosure. More specifically, referring to  FIG.  27    the second male anchor  126  is coupled to a bottom surface  136  of the housing  122 . According to one aspect of the present disclosure, the second male anchor  126  comprises a neck-like spacer  128  and a washer-shaped head  130 . In such an aspect, referring again to  FIG.  27   , the spacer  128  and the head  130  of the second male anchor  126  are coaxially aligned with axis E-E. In such an aspect, axis E-E may be perpendicular to axis F-F (see  FIG.  28   ) which extends lengthwise between a proximal end and a distal end of the housing  122 . Axis F-F may be centrally located between a first side  132  and a second side  134  of the housing  122 . Notably, axis F-F and axis A-A (see  FIG.  2   ) may be aligned in the same plane. Further in such an aspect, the neck-like spacer  128  and the washer-shaped head  130  of the second male anchor  126  is configured to mimic the shape of the T-slot of the slotted rail  108  (see  FIG.  10   ). More specifically, each spacer  128  is configured and dimensioned to be insertably and slideably received in portion “H” defined by the slotted rail  108  and each head  130  is configured and dimensioned to be insertably and slideably received in portion “I” defined by the slotted rail  108  (see  FIG.  10   ). 
     Referring again to  FIG.  27   , the second male anchor  126  is not adjustable. More specifically, a distance “J” defined between a top surface of the head  130  and a bottom surface  136  of the housing  122  cannot be altered (see  FIG.  10   ). In such an aspect distance “J” may be specifically calibrated for a particular/standard slotted rail  108  with tight tolerances. According to one aspect, the spacer  128  and head  130  of the second male anchor  126  may be precision machined as one piece. According to such an aspect, the second male anchor  126  may be fixedly attached to the bottom surface  136  of the housing  122 . In one aspect, the second male anchor  126  may be welded to the bottom surface  136  of the housing  122 . In another aspect, the second male anchor  126  may further define an aperture along axis E-E. In such an aspect, a sleeved screw (e.g., that bottoms out at the desired distance “J”), may be inserted in the aperture to fixedly attach the second male anchor  126  to the bottom surface  136  of the housing  122 . According to yet another aspect of the present disclosure, the second male anchor  126  may be integrated on the bottom surface  136  of the housing  122  via a die casting process. Namely,  FIGS.  25  and  26    illustrate an example connector assembly  120  wherein the housing  122  lacks a bottom surface  136 . In such an example, a bottom surface/plate  136  comprising the second male anchor integrated thereon, may be die casted for attachment to the housing  122  (e.g., via welding, screws/bolts to existing/available holes e.g.,  138 ). Such a die casted bottom surface/plate  136  would serve at least three purposes (e.g., i) protect the motor  140  and gear assembly  142 , ii) make the housing  122  rigid, and iii) provide a way to simply, quickly and rigidly attach a connector assembly  120  to a desk  100 ). Lastly, according to one alternative aspect of the present disclosure, a housing  122  of a connector assembly  120  (see, e.g.,  FIGS.  25  and  26   ) may be fixedly inserted within and/or attached to a rectangular steel tube or sleeve to which second male anchor  126  is attached as described herein. 
     Referring again to  FIG.  27   , according to an alternative aspect of the present disclosure, the second male anchor  126  may be adjustable. According to such aspect, adjustability of the second male anchor  126  may account for material variability (e.g., of the second male anchor  126  affecting distance “J,” thickness “K” of the slotted rail  108 , etc.). According to one aspect, to realize adjustability, the second male anchor  126  may define an aperture along axis E-E. In such an aspect, a screw may be inserted in the aperture to fixedly attach the second male anchor  126  to the bottom surface  136  of the housing  122 . Notably, in such an aspect, the spacer  128  may be compressible to selectively adjust the distance “J” to ensure that the housing  122  is rigidly attached to the slotted rail  108 . 
     Turning again to  FIG.  27   , a detailed view of a connector assembly  120  in a loosened configuration, according to various aspects of the present disclosure, is disclosed. In particular, the housing  122  comprises a housing attachment assembly (shown generally at  144 ). More specifically, in such aspects the housing attachment assembly  144  comprises a second male anchor  126  (e.g., described above) coupled to a first component surface  136  (e.g., a bottom surface of the housing  122 , a surface of a die casted plate, a bottom surface of a rectangular steel tube, etc.), a fulcrum or pivot  146  located on a distal portion of the first component surface  136  and a lever assembly  148  coupled to a proximal end/portion of the first component (e.g., housing  122 ). Notably, in such an aspect, the first protrusion  146  is positioned proximally with respect to the second male anchor  126 . Further, in such an aspect, the lever assembly  148  comprises a base  150 , a lever  152 , a first pin  154 , a second pin  155 , and a first male anchor  124 , wherein the lever  152  is configured to rotate (e.g., counterclockwise in  FIG.  27   ) about the first pin  154  between a first position  156  (see  FIG.  27   , e.g., where the housing attachment assembly  144  is in a movable configuration) and a second position  158  (see  FIG.  29   , e.g., where the housing attachment assembly  144  is in a fixed/rigid configuration). 
     In view of  FIG.  27   , in the first position  156 , a first gap  160  exists between a top surface of the head  130  of the first male anchor  124  and an interfacing surface  162  of the slotted rail  108  and a second gap  164  exists between a top surface of the head  130  of the second male anchor  126  and the interfacing surface  162  of the slotted rail  108 . Notably, in such a movable configuration axis F-F varies from axis L-L by an angle “M.” In such an aspect, axis L-L may be parallel to a plane defined by the bottom surface  102   b  of the desktop  102 . Furthermore, angle “M” may comprise an acute angle sufficient to produce a first gap  160  and a second gap  164  that enables the housing  122  to slide longitudinally, between the proximal end and the distal end of the slotted rail  108 , within the slot (e.g. T-slot). Furthermore, the angle “M” may comprise an acute angle sufficient to prevent a frictional binding between the first protrusion  146  and the top surface  118  of the slotted rail  108  and/or a wedging between the first protrusion  146  and the second male anchor  126  that would inhibit distal and/or proximal slideability of the housing  122 . 
       FIG.  28    illustrates an isometric view of the housing  122  and the housing attachment assembly  144  according to the alternative aspect of  FIG.  27   . Notably, in view of  FIG.  28   , the lever assembly  148  of the housing attachment assembly  144  comprises the first pin  154  that extends along axis G-G through the base  150  and the lever  152  to rotatably couple the lever  152  to the base  150 . In such an aspect, the axis G-G may be perpendicular to axis F-F. Notably, in such an aspect, the base  150  may comprise a first base portion  150   a  separated from a second base portion  150   b  (see  FIG.  28   ) by a gap “Q” and the lever  152  may comprise a first lever portion  152   a  and a second lever portion  152   b . Here, as previously indicated, the lever assembly  148  in such an aspect may further comprise the second pin  155  that extends along axis R-R through the first lever portion  152   a , through the first male anchor  124 , and through the second lever portion  152   b  to rotatably couple the first male anchor  124  to the lever  152 . Notably, the lever  152  may define a slot  188 . Here, in view of  FIG.  28    the slot  188  in the lever  152  and the gap “Q” between the first base portion  150   a  and the second base portion  150   b  enable translation of the first male anchor  124  as the lever  152  is rotated between the first position  156  and the second position  158 . 
     Referring back to  FIG.  27   , the first male anchor  124  is coupled to the lever  152  as described above. In such an aspect, similar to the second male anchor  126 , the first male anchor  124  comprises a neck-like spacer  128  and a washer-shaped head  130 . Notably, in such an aspect however, the spacer  128  of the first male anchor  124  is longer than the spacer  128  of the second male anchor  126 . Referring again to  FIG.  27   , the spacer  128  and the head  130  of the first male anchor  124  are coaxially aligned with axis D-D. In such an aspect, axis D-D may be substantially perpendicular to axis L-L which is parallel to the plane defined by the bottom surface  102   b  of the desktop  102 . Further in such an aspect, the neck-like spacer  128  and the washer-shaped head  130  of the first male anchor  124  is configured to mimic the shape of the T- slot of the slotted rail  108  (see  FIG.  10   ). More specifically, each spacer  128  is configured and dimensioned to be insertably and slideably received in portion “H” defined by the slotted rail  108  and each head  130  is configured and dimensioned to be insertably and slideably received in portion “I” defined by the slotted rail  108  (see  FIG.  10   ). 
     Next, referring to  FIG.  29   , the first male anchor  124  is not adjustable. More specifically, distance “S” defined between a top surface of the head  130  and a center of the second pin  155  cannot be altered (see  FIG.  10   ). In such an aspect distance “S” may be specifically calibrated for a particular/standard slotted rail  108  with tight tolerances. According to one aspect, the spacer  128  and head  130  of the first male anchor  124  may be precision machined as one piece. 
     Notably, referring back to  FIG.  2   , the top surface  118  of the slotted rail  108  may further define an aperture  166  configured/sized to insertably receive the head  130  of each of the first male anchor  124  and the second male anchor  126 . In such an aspect the first male anchor  124  may be inserted through the aperture  166  followed by the second male anchor  126 , or vice versa, to slideably couple the housing  122  of the connector assembly  120  to the slotted rail. In another aspect of the present disclosure the first angled bracket  114  and/or the second angled bracket  116  may define a cutout (not shown) at the proximal end and/or distal end of the slotted rail  108  respectively that permits the first male anchor  124  and the second male anchor  126  to slide into the slot of the slotted rail  108  and the motor housing assembly to slide onto the slotted rail  108 . In such an aspect, a plug (not shown) may be inserted into the slot of the slotted rail  108  and/or attached to the first angled bracket  114  and/or the second angled bracket  116  to prevent the inserted housing  122  from sliding out the proximal end and/or distal end of the slotted rail  108 . Notably, the first male anchor  124  and the second male anchor  126  of the alternative aspect described in  FIG.  27    may be easier to insert into such an aperture  166  than the first male anchor  124  and the second male anchor  126  of the aspect described in  FIG.  4   . In particular, referring to the alternative aspect, since the first male anchor  124  is coupled to the lever  152  (e.g., in lieu of the housing  122 ) the first male anchor  124  is able to move (i.e., via the first pin  154  and the second pin  155 ) for easy insertion. 
     Next, referring again to  FIG.  29   , a detailed view of the connector assembly  120  in a tightened configuration, according to the alternative aspect of  FIG.  27   , is illustrated. Namely, in the second position  158 , the first gap  160  and the second gap  164  have been closed/eliminated. Here, the first male anchor  124  is configured and sized (e.g., distance “S” described above) to close/eliminate the first gap  160  and the second gap  164  to lock the housing  122  to the slotted rail  108 . In particular, as the lever  152  of the lever assembly  148  is rotated (e.g., counterclockwise between  FIG.  27    and  FIG.  29   ) about the first pin  154  the first male anchor  124  is translated (e.g., up and toward the housing  122 ), via the second pin  155 , such that the first gap  160  and the second gap  164  are closed/eliminated. More specifically, in view of  FIG.  28    and  FIG.  30   , as the lever  152  of the lever assembly  148  is rotated about the first pin  154 , the second pin  155  causes the first male anchor  124  to translate such that the head  130  of the first male anchor  124  engages the interfacing surface  162 . After such engagement, further rotation of the lever  152  toward the second position  158  causes the housing  122  to pivot about the first protrusion  146  and cause the head  130  of the second male anchor  126  to engage the interfacing surface of the slotted rail  108 . In the second position  158 , each of the top surface of the head  130  of the first male anchor  124  and the top surface of the head  130  of the second male anchor  124  are frictionally and/or rigidly engaged with the interfacing surface  162  of the slotted rail  108 . In such an aspect, movement is prevented/inhibited in all directions rendering the housing  122  rigidly attached to the slotted rail  108  at that position along the slotted rail  108 . Notably, in view of  FIG.  29   , the first protrusion  146  and/or first male anchor  124  are configured and sized such that axis F-F is substantially parallel to the plane defined by the bottom surface  102   b  of the desktop  102  (e.g. angle “M” is zero or substantially zero). 
       FIG.  30    illustrates an isometric view of the connector assembly  120  and the housing attachment assembly  144  in a tightened configuration according to the alternative aspect of  FIG.  27   . Notably, the first protrusion  146  may extend across the bottom surface  136  of the housing  122  along axis N-N between the first side  132  and the second side  134  of the housing  122 . In such aspects, axis N-N may be perpendicular to axis F-F. Further, similar to  FIG.  11   , the first protrusion  146  may extend across the bottom surface  136  between the first side  132  and the second side  134  at least a distance equal to or greater than a width of the slotted rail  108 . In such an aspect the surface area of the first protrusion  146  interfacing with the top surface  118  of the slotted rail  108  in the second position  158  is maximized. In alternative aspects, the first protrusion  146  may extend across the bottom surface  136  between the first side  132  and the second side  134  a distance less than a width of the slotted rail  108 . In such an aspect the surface area of the first protrusion  146  interfacing with the top surface  118  of the slotted rail  108  in the second position  158  is not maximized, but is sufficient to tighten the housing  122  and inhibit movement in all directions. In yet another alternative aspect, the first protrusion  146  may comprise a first fulcrum portion (not shown) and a second fulcrum portion (not shown), extending along axis N-N, wherein no fulcrum portion exists over the slot (i.e. T-slot) of the slotted rail  108  (e.g., lacks a fulcrum portion corresponding to portion “H” in  FIG.  10   ). In various aspects of the present disclosure the first protrusion  146  comprises the same material as the motor housing (e.g. sheet metal, aluminum, etc.). In alternative aspects, the first protrusion  146  comprises a hard rubber or composite material to frictionally engage the top surface  118  of the slotted rail  108  to further inhibit movement of the housing  122  in the tightened configuration and/or to inhibit movement when actuating the lever  152 . 
     Another alternative aspect of the present disclosure is illustrated in  FIGS.  31 - 39   . This aspect is similar to the aspects described above in that it includes a connector assembly  120  that is configured to reversibly engage with a rail  108  without the use of any tools. In various aspects, the connector assembly  120  illustrated in  FIGS.  31 - 39    can likewise include a housing  122  that can house a motor  140 , a leg assembly  104  that is connectable to the housing  122 , and a lever assembly  148 . Further, as with the aspects illustrated in  FIGS.  1 - 11   , the second protrusion(s)  168  can be positioned on the lever  152  such that pivoting the lever  152  from its first position (which corresponds to the loosened configuration of the connector assembly  120 ) to its second position (which corresponds to the tightened configuration of the connector assembly  120 ) causes the second protrusion(s)  168  to rotate from a first orientation, illustrated in  FIG.  33 A , to a second orientation, illustrated in  FIG.  33 B . When in the second orientation, the second protrusion  168  can extend outwardly from the body (e.g., the housing  122 ) of the connector assembly  120  a distance that is substantially equal to the distance by which the first protrusion  168  extends from the body of the connector assembly  120 . In one aspect, the heights of the first and second protrusions  146 ,  168  can be substantially equal. However, this aspect differs from the aspects illustrated in  FIGS.  1 - 30    in that the connector assembly  120  includes tabs  202  positioned on the lateral sides thereof, as opposed to anchors  124 ,  126  positioned on a bottom surface of the housing  122  ( FIGS.  1 - 11   ) or positioned on a combination of the bottom surface of the housing  122  and the lever  152  ( FIGS.  27 - 30   ). In one aspect, the tabs  202  are oriented orthogonally relative to the first and second protrusions  146 ,  168 . As with the anchors  124 ,  126  described above, the tabs  202  can also be referred to as “third protrusions.” By positioning the tabs  202  laterally along the connector assembly  120 , the connector assembly  120  can sit such that it is at least partially enclosed within the rail  108  and thus provide for a more compact overall structure. In the illustrated aspect, the tabs  202  are positioned between the first protrusion  146  and the second protrusion  168  with respect to the longitudinal axis of the connector assembly  120 . Further, the tabs  202  can be positioned such that they are nonplanar with a plane defined by the first protrusion  146  and the second protrusion  168  when the lever  152  is in the second or tightened position. In other words, the tabs  202  can be positioned such that they are offset from the first and second protrusions  146 ,  168 . 
     It should also be noted that although the depicted aspect includes two tabs  202 , each of which is positioned on opposing lateral surfaces of the connector assembly  120 , this is merely for illustrative purposes. Aspects including any number, orientation, or arrangement of tabs  202  that otherwise conform to the requirements described herein are considered to be within the scope of the present disclosure. Further, although the depicted aspect includes a set of two of each of the first and second protrusions  146 ,  168 , this is likewise merely for illustrative purposes. In alternative aspects, the connector assembly  120  can include a single first and/or second protrusion  146 ,  168  (see, e.g.,  FIG.  11   ). Aspects including any number, orientation, or arrangement of first and second protrusions  146 ,  168  that otherwise conform to the requirements described herein are considered to be within the scope of the present disclosure. 
     The rail  108  further includes a cutout  166  corresponding to each of the tabs  202  of the connector assembly  120 . The cutouts  166  are configured, sized, or dimensioned to receive the tabs  202  therethrough. The position(s) at which the cutouts  166  are located can be referred to as the “insertion position(s)” along the rail  108 . Similarly to the aspects described above, the connector assembly  120  can be inserted into the rail  108  when the tabs  202  are aligned with the cutouts  166 , as depicted in  FIG.  35   . Correspondingly, the rail  108  is further configured or dimensioned to retain the connector assembly  120  within or by the rail  108  when the tabs  202  are not aligned with the cutouts  166  because the lips  212  ( FIG.  38   ) of the rail  108  serve as physical obstructions for the tabs  202 , which prevents any non-longitudinal movement of the connector assembly  120  within the rail  108 . The position(s) at which the connector assembly  120  is retained by the rail  108  can be referred to as the “retention position(s)” along the rail  108 . 
     Once inserted into the rail and when the lever  152  is in the open position, the connector assembly  120  can be slid along the length of the rail  108  to position the connector assembly  120  at the desired location, as depicted in  FIGS.  35  and  36   . When the lever  152  is in the open position, the second protrusions  168  (which extend from the lever  152 ) are rotated out of alignment with the first protrusions  146 , as depicted in  FIG.  33 A , which thus allows for the connector assembly  120  to be pivoted slightly within the rail  108  about the first protrusions  146  to create clearance to slide the connector assembly  120  through the rail  108 . Once at the desired location, the connector assembly  120  can be locked in place by transitioning the lever  152  from the open position to the closed position, as depicted in  FIG.  37   . When the lever  152  is in the closed position, the second protrusions  168  are rotated into alignment with the first protrusions  146 , as depicted in  FIG.  33 B . As depicted in  FIG.  38   , the distance d 1  between the undersurface of the lip  212  of the rail  108  and the bottom surface  214  of the rail  108  is equal to a close tolerance to the distance d 2  between the end of the tabs  202  and the portion or end of the first and second protrusions  146 ,  168  that contact the bottom surface  214  of the rail  108 . Accordingly, pivoting the lever  152  from a first or open position, as illustrated in  FIG.  39 A , to a second or closed position, as illustrated in  FIG.  39 B , when the connector assembly  120  is positioned within the rail  108  rotates the second protrusion(s)  168  into contact with the bottom surface  214  of the rail  108 , which then causes the first and second protrusions  146 ,  168  to frictionally engage the bottom surface  214  of the rail  108  and the tab(s)  202  to frictionally engage the lip  212  of the rail  108 . By this action, the connector assembly  120  is fixedly held or wedged within the rail  108 . The frictional forces exerted by the first, second, and third protrusions  146 ,  168 ,  202  against the rail  108  prevent longitudinal, later, and/or rotational movement of the connector assembly  120  within the rail  108  and thus the connector assembly  120  is fixedly held in place therein, as illustrated in  FIG.  39 B . 
     Various aspects of the present disclosure are directed to an attachment assembly for quickly, simply, and rigidly attaching a motor housing and a leg assembly to a desktop of an electronic height-adjustable desk. For example, utilizing the structural and geometrical provisions of standard T-slot aluminum profiles, a motor housing’s generous top surface plate may be integrally outfitted with male anchors along its length to interface and gain a strong purchase with a slotted rail. By actuating a lever with a cam at one extremity of the housing plate opposing an elevated fulcrum at the opposite end, the male anchors are moved from a free state within the slot to a locked position. Access to the rail can be made from the open ends or via a special cored-out channel on the rail’s surface. The attachment of additional components (e.g., the electrical control box, rectangular tubing for cord management, etc.) may be accommodated by the slotted rail as well. 
     Advantages of the present disclosure include but are not limited to: intuitive and quick assembly, the elimination of screws and/or tools for assembly, the ability to locate the leg assemblies in various positions along the rail without prescription, the low profile of a structurally sound top with a pre-installed integral frame (e.g., slotted rail, angle brackets, etc.), and an abundant interchangeability across a range of top sizes and leg options. 
     The levering from one end of a rigid plate with integral fixation to a slotted rail should not be limited to use for a stand-up desk leg assembly. Such aspects could have wide-ranging application for the fixation of all types of load bearing and structural assemblies (e.g., with fixed legs or otherwise). Notably, the geometrical relationship of the male anchors and slotted profile are not limited to available aluminum profiles. Namely, according to various aspects, profiles of other shapes and materials can be made to measure for customized applications across a wide variety of surface shapes, sizes, and furnishings. 
     Various aspects of the subject matter described herein are set out in the following numbered examples: 
     Example 1. An attachment assembly comprising: a connector assembly comprising: a first protrusion held in a fixed orientation relative to the connector assembly; a lever pivotable between a first position and a second position; a second protrusion extending from the lever, the second protrusion configured to rotate from a first orientation to a second orientation as the lever pivots from the first position to the second position; a third protrusion positioned between the first protrusion and the second protrusion; and a rail comprising: a lip; and a cutout in the lip, the cutout located at an insertion position on the rail and sized to receive the third protrusion; wherein the rail is configured to retain the connector assembly at a retention position on the rail, the retention position being at a different position than the insertion position; wherein pivoting the lever from the first position to the second position when the connector assembly is positioned within the rail is configured to cause the second protrusion to bear against a bottom surface of the rail, such that the first protrusion and the second protrusion frictionally engage the bottom surface of the rail and the third protrusion frictionally engages the lip to fixedly hold the connector assembly at the retention position.   Example 2. The attachment assembly of Example 1, wherein the third protrusion is nonplanar to a plane defined by the first protrusion and the second protrusion.   Example 3 The attachment assembly of Examples 1 or 2, wherein the first protrusion and the second protrusion are equal in height.   Example 4. The attachment assembly of any one of Examples 1-3, wherein a first distance between an undersurface of the lip and the bottom surface of the rail is equal to a close tolerance to a second distance between an end of the third protrusion and an end of the first protrusion that contacts the bottom surface of the rail.   Example 5. The attachment assembly of any one of Examples 1-4, wherein the first protrusion and the second protrusion comprise a compressible material.   Example 6. The attachment assembly of any one of Examples 1-5, wherein a longitudinal axis of the connector assembly forms an angle with a longitudinal axis of the rail when the lever is in the first position, the angle configured to prevent the first protrusion and the second protrusion from frictionally engaging the rail.   Example 7. A furniture assembly comprising: a table surface; a leg assembly; a connector assembly disposed on the leg assembly, the connector assembly comprising: a first protrusion held in a fixed orientation relative to the connector assembly; a lever pivotable between a first position and a second position; a second protrusion extending from the lever, the second protrusion configured to rotate from a first orientation to a second orientation as the lever pivots from the first position to the second position; a third protrusion positioned between the first protrusion and the second protrusion; and a rail disposed on the table surface, the rail comprising: a lip; and a cutout in the lip, the cutout located at an insertion position on the rail and sized to receive the third protrusion; wherein the rail is configured to retain the connector assembly at a retention position on the rail, the retention position being at a different position than the insertion position; wherein pivoting the lever from the first position to the second position when the connector assembly is positioned within the rail is configured to cause the second protrusion to bear against a bottom surface of the rail, such that the first protrusion and the second protrusion frictionally engage the bottom surface of the rail and the third protrusion frictionally engages the lip to fixedly hold the connector assembly at the retention position.   Example 8. The furniture assembly of Example 7, wherein the third protrusion is nonplanar to a plane defined by the first protrusion and the second protrusion.   Example 9. The furniture assembly of Examples 7 or 8, wherein the first protrusion and the second protrusion are equal in height.   Example 10. The furniture assembly of any one of Examples 7-9, wherein a first distance between an undersurface of the lip and the bottom surface of the rail is equal to a close tolerance to a second distance between an end of the third protrusion and an end of the first protrusion that contacts the bottom surface of the rail.   Example 11. The furniture assembly of any one of Examples 7-10, wherein the first protrusion and the second protrusion comprise a compressible material.   Example 12. The furniture assembly of any one of Examples 7-11, wherein a longitudinal axis of the connector assembly forms an angle with a longitudinal axis of the rail when the lever is in the first position, the angle configured to prevent the first protrusion and the second protrusion from frictionally engaging the rail.   Example 13. The furniture assembly of any one of Examples 7-12, wherein the connector assembly further comprises: a housing; a motor disposed within the housing, the motor configured to extend and retract the leg assembly.   Example 14. A method of assembling an article of furniture comprising a connector assembly and a rail, the connector assembly comprising a first protrusion held in a fixed orientation relative to the connector assembly, a lever pivotable between a first position and a second position, a second protrusion extending from the lever, the second protrusion configured to rotate from a first orientation to a second orientation as the lever pivots from the first position to the second position, and a third protrusion positioned between the first protrusion and the second protrusion, the rail comprising a lip and a cutout in the lip, the cutout sized to receive the third protrusion, the method comprising: aligning the third protrusion with the cutout; inserting the connector assembly into the rail; sliding the connector assembly to a location along the rail; and pivoting the lever from the first position to the second position to cause the second protrusion to bear against a bottom surface of the rail, such that the first protrusion and the second protrusion frictionally engage the bottom surface of the rail and the third protrusion frictionally engages the lip to fixedly hold the connector assembly at a retention position.   Example 15. The method of Example 14, wherein the connector assembly comprises a first connector assembly, further comprising: aligning a third protrusion of a second connector assembly with the cutout; inserting the second connector assembly into the rail; sliding the second connector assembly to a second location along the rail; and pivoting a second lever of the second connector assembly from a first position to a second position to cause a second protrusion of the second connector assembly to bear against the bottom surface of the rail, such that a first protrusion of the second connector assembly and the second protrusion of the second connector assembly frictionally engage the bottom surface of the rail and the third protrusion frictionally engages the lip to wedge the second connector assembly within the rail and fixedly hold the second connector assembly in place at the second location.   Example 16. The method of Examples 14 or 15, wherein the third protrusion is nonplanar to a plane defined by the first protrusion and the second protrusion.   Example 17. The method of any one of Examples 14-16, wherein the first protrusion and the second protrusion are equal in height.   Example 18. The method of any one of Examples 14-17, wherein a first distance between an undersurface of the lip and the bottom surface of the rail is equal to a close tolerance to a second distance between an end of the third protrusion and an end of the first protrusion that contacts the bottom surface of the rail.   Example 19. The method of any one of Examples 14-18, wherein the first protrusion and the second protrusion comprise a compressible material.   Example 20. The method of any one of Examples 14-19, wherein a longitudinal axis of the connector assembly forms an angle with a longitudinal axis of the rail when the lever is in the first position, the angle configured to prevent the first protrusion and the second protrusion from frictionally engaging the rail.   Example 21. The method of any one of Examples 14-20, wherein the connector assembly further comprises a leg assembly attached thereto.   

     While various details have been set forth in the foregoing description, it will be appreciated that the various aspects of the techniques may be practiced without these specific details. One skilled in the art will recognize that the herein described components (e.g., operations), devices, objects, and the discussion accompanying them are used as examples for the sake of conceptual clarity and that various configuration modifications are contemplated. Consequently, as used herein, the specific exemplars set forth and the accompanying discussion are intended to be representative of their more general classes. In general, use of any specific exemplar is intended to be representative of its class, and the non-inclusion of specific components (e.g., operations), devices, and objects should not be taken limiting. 
     Further, while several forms have been illustrated and described, it is not the intention of the applicant to restrict or limit the scope of the appended claims to such detail. Numerous modifications, variations, changes, substitutions, combinations, and equivalents to those forms may be implemented and will occur to those skilled in the art without departing from the scope of the present disclosure. Moreover, the structure of each element associated with the described forms can be alternatively described as a means for providing the function performed by the element. Also, where materials are disclosed for certain components, other materials may be used. It is therefore to be understood that the foregoing description and the appended claims are intended to cover all such modifications, combinations, and variations as falling within the scope of the disclosed forms. The appended claims are intended to cover all such modifications, variations, changes, substitutions, modifications, and equivalents. 
     It is to be understood that depicted architectures of different components contained within, or connected with, different other components are merely examples, and that in fact many other architectures may be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively “associated” such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as “associated with” each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated also can be viewed as being “operably connected,” or “operably coupled,” to each other to achieve the desired functionality, and any two components capable of being so associated also can be viewed as being “operably couplable” to each other to achieve the desired functionality. Specific examples of operably couplable include but are not limited to physically mateable and/or physically interacting components, and/or wirelessly interactable, and/or wirelessly interacting components, and/or logically interacting, and/or logically interactable components, and/or electrically interacting components, and/or electrically interactable components, and/or optically interacting components, and/or optically interactable components. 
     In other instances, one or more components may be referred to herein as “configured to,” “configurable to,” “operable/operative to,” “adapted/adaptable to,” “able to,” “conformable/conformed to,” etc. Those skilled in the art will recognize that “configured to” can generally encompass active-state components and/or inactive-state components and/or standby-state components, unless context requires otherwise. 
     While particular aspects of the present disclosure have been shown and described, it will be apparent to those skilled in the art that, based upon the teachings herein, changes and modifications may be made without departing from the subject matter described herein and its broader aspects and, therefore, the appended claims are to encompass within their scope all such changes and modifications as are within the true scope of the subject matter described herein. It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims), are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to claims containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. 
     In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that typically a disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms unless context dictates otherwise. For example, the phrase “A or B” will be typically understood to include the possibilities of “A” or “B” or “A and B.” 
     With respect to the appended claims, those skilled in the art will appreciate that recited operations therein may generally be performed in any order. Also, although various operational flows are presented in a sequence(s), it should be understood that the various operations may be performed in other orders than those which are illustrated, or may be performed concurrently. Examples of such alternate orderings may include overlapping, interleaved, interrupted, reordered, incremental, preparatory, supplemental, simultaneous, reverse, or other variant orderings, unless context dictates otherwise. Furthermore, terms like “responsive to,” “related to,” or other past-tense adjectives are generally not intended to exclude such variants, unless context dictates otherwise. 
     It is worthy to note that any reference to “one aspect,” “an aspect,” “one form,” or “a form” means that a particular feature, structure, or characteristic described in connection with the aspect is included in at least one aspect. Thus, appearances of the phrases “in one aspect,” “in an aspect,” “in one form,” or “in a form” in various places throughout the specification are not necessarily all referring to the same aspect. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more aspects. 
     With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations are not expressly set forth herein for sake of clarity. 
     In summary, numerous benefits have been described which result from employing the concepts described herein. The foregoing description of the one or more forms has been presented for purposes of illustration and description. It is not intended to be exhaustive or limiting to the precise form disclosed. Modifications or variations are possible in light of the above teachings. The one or more forms were chosen and described in order to illustrate principles and practical application to thereby enable one of ordinary skill in the art to utilize the various forms and with various modifications as are suited to the particular use contemplated. It is intended that the claims submitted herewith define the overall scope.