Abstract:
A vehicle seating assembly includes a seatback. A head restraint is operably coupled with the seatback by first and second support posts. The head restraint is operable between a stowed position and a use position. A lower brace is operably coupled with a lower portion of the head restraint. An upper brace is operably coupled with an upper portion of the head restraint. A latching mechanism is coupled with the seatback and operably coupled with the upper brace and the lower brace. The latching mechanism is operable between a first position corresponding to the stowed position of the head restraint, and a second position corresponding to the use position of the head restraint.

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application is a continuation of and claims priority to U.S. patent application No. 14/315,443, filed on Jun. 26, 2014, entitled “POWER ARTICULATING HEADREST ASSEMBLY,” the entire disclosure of which is hereby incorporated herein by reference. 
    
    
     FIELD OF THE DISCLOSURE 
     The present invention generally relates to a headrest for a vehicle, and more particularly to a headrest with a knock down pivot for a vehicle. 
     BACKGROUND OF THE DISCLOSURE 
     It is common for front seating assemblies in vehicles to include a headrest assembly for supporting the head of a seated occupant. Generally, these headrest assemblies are installed separately on a vehicle seat in a vehicle manufacturing facility after the vehicle seat has been installed in a vehicle interior. This is generally due to the fact that when assembled, the vehicle seat in combination with the headrest assembly is too large to fit through the front driver&#39;s side or passenger&#39;s side doors. Further, an assembled seat with headrest is often too large to ship as a unitary structure on a typical trailer storage shelf. Thus, they are typically installed separately which incurs higher costs and a number of undesired installment executions. Further, making electrical and structural connections between the vehicle seat and the headrest assembly is an assembly execution that is better performed when the vehicle seat is not installed in the vehicle. Further still, known headrest assemblies may be limited to vertical adjustment relative to a seatback, such that these headrest assemblies lack adequate adjustment features for different sized occupants and various positions a seated occupant may assume in the vehicle seat. 
     SUMMARY OF THE INVENTION 
     One aspect of the present invention includes a vehicle headrest assembly including a headrest member which is operably coupled to a seatback between upright and folded positions. A support assembly includes first and second linkages which are pivotally coupled to the headrest member and seatback at opposite ends thereof. First and second latch brackets are coupled to the first and second linkages respectively and are operable between latched and unlatched positions. The headrest member is moveable to the folded position from the upright position when the first and second latch brackets are in the unlatched position. 
     Another aspect of the present invention includes a vehicle headrest assembly having a support assembly defined by first and second linkages which are pivotally coupled to a headrest member between fore and aft positions. The headrest member is vertically adjustable. First and second latch brackets are coupled to the first and second linkages respectively and are operable between latched and unlatched positions. The headrest member is moveable to a folded position when the latch brackets are in the unlatched positions. 
     Yet another aspect of the present invention includes a vehicle headrest assembly having a headrest member coupled to a headrest bracket. A seatback includes a cross member with a first actuator member disposed thereon. A first linkage is pivotally coupled to the cross member at a first end and pivotally coupled to the headrest bracket at a second end. The first linkage includes a support arm extending outwardly therefrom. A first latch bracket is coupled to the first actuator at a lower end and further coupled to the support arm at an upper end. A second linkage is coupled to a second latch bracket at a first end and pivotally coupled to the headrest bracket at a second end. The second latch bracket is disposed on the cross member. The first and second linkages define a support assembly which is moveable between fore and aft positions as powered by the first actuator. The first and second latch brackets are operable between latched and unlatched positions, wherein the headrest member is moveable to a folded position when the first and second latch brackets are in the unlatched position. 
     These and other aspects, objects, and features of the present invention will be understood and appreciated by those skilled in the art upon studying the following specification, claims, and appended drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       In the drawings: 
         FIG. 1  is a top perspective view of a vehicle seat having a headrest assembly installed in a vehicle interior according to one embodiment; 
         FIG. 2  is a top perspective view of the vehicle seat of  FIG. 1  removed from the vehicle interior; 
         FIG. 3  is a side elevational view of the headrest assembly and a portion of a seatback of the vehicle seat of  FIG. 1 ; 
         FIG. 4A  is an exploded rear perspective view of components of the headrest assembly exploded away from structural elements in the seatback; 
         FIG. 4B  is a rear perspective view of a headrest assembly having a trim piece removed, wherein the headrest assembly is in a full upright position; 
         FIG. 4C  is a rear perspective view of the headrest assembly of  FIG. 4B  in a partially folded position; 
         FIG. 4D  is a rear perspective view of the headrest assembly of  FIG. 4B  in a fully folded position; 
         FIG. 5  is an exploded side elevational view of the headrest assembly of  FIG. 4B ; 
         FIG. 6  is an exploded rear, top perspective view of a motorized actuation assembly of the headrest assembly; 
         FIG. 7A  is a rear perspective view of the headrest assembly of  FIG. 5  assembled with the headrest member in a fully down position; 
         FIG. 7B  is a rear perspective view of the headrest assembly of  FIG. 7A  with the headrest member in a full up position; 
         FIG. 8A  is a rear perspective view of the headrest assembly of  FIG. 7A  with the cover removed and the headrest member in an aft position; and 
         FIG. 8B  is a rear perspective view of the headrest assembly of  FIG. 8A  with the headrest member in a fore position. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     For purposes of description herein, the terms “upper,” “lower,” “right,” “left,” “rear,” “front,” “vertical,” “horizontal,” and derivatives thereof shall relate to the invention as oriented in  FIG. 1 . However, it is to be understood that the invention may assume various alternative orientations, except where expressly specified to the contrary. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise. 
     Referring now to  FIG. 1 , the reference numeral  10  generally designates a vehicle seat as positioned within a vehicle interior  14  of a vehicle  12  on a driver&#39;s side thereof. The vehicle seat  10  includes a seatback  16  pivotally coupled to a seat member  18 . The seat member  18  is slidably coupled to a vehicle floor  20  along a track assembly  22 . The track assembly  22  is configured to allow the vehicle seat  10  to be adjusted in forward and rearward directions along a path indicated by arrow A within the vehicle interior  14 . It is understood that the vehicle seat  10  may be positioned in various locations throughout the vehicle interior  14  other than the illustrated position, such as a passenger&#39;s side location, a mid-row location, and a rear seat location. It is also conceivable that the seat member  18  may not include a track assembly, like track assembly  22 , and alternatively may be fixedly coupled to the vehicle floor  20 . 
     Referring now to  FIG. 2 , the seatback  16  includes a lower portion  16   a  and an upper portion  16   b . The upper portion  16   b  of the seatback  16  is coupled to a headrest assembly  30  by a support assembly  32 . The headrest assembly  30  includes a headrest member  34 , shown in  FIG. 2  in a fully upright position U above the seatback  16 , which is vertically and horizontally adjustable along paths indicated by arrows V and H respectively. The headrest assembly  30  is further configured to move the headrest member  34  from the upright position U to a folded position F long a path indicated by arrow B as further described below with reference to  FIGS. 4B-4D . 
     Referring now to  FIG. 3 , the support assembly  32  of the headrest assembly  30  extends upwardly from the upper portion  16   b  of the seatback  16  and curves slightly forward to couple with a headrest bracket  100  of the headrest member  34  as further described below. As shown, the support assembly  32  includes the trim piece  38  that substantially encloses components of the support assembly  32  as further described below. The trim piece  38  extends from the headrest member  34  to the upper portion  16 b of the seatback  16 . It is conceivable that the trim piece  38  may include flexible components such as vinyl or leather structures to accommodate for relative movement of the headrest member  34  and support assembly  32 . As shown in  FIG. 3 , the support assembly  32  is pivotally coupled to a cross member  40  disposed in the upper portion  16 b of the seatback  16  for structurally support the headrest assembly  30 . 
     Referring now to  FIG. 4A , the cross member  40  is shown having first and second ends  40   a ,  40   b , with a middle portion  40   c  disposed therebetween. Support brackets  42 ,  44  are configured to couple to the cross member  40  at the first and second ends  40   a ,  40   b , respectively. The support brackets  42 ,  44  include upright connecting portions  42   a ,  44   a  which are configured to receive a pivot bar  43  which pivotally connects a linkage of the support assembly  32  as further described below. An attachment bracket  46  includes fasteners  46   a ,  46   b  for coupling to the cross member  40  at the middle portion  40   c . The attachment bracket  46  is coupled to a first actuator  50  which includes a drive shaft  52  for driving the fore and aft positioning of the headrest member  34  along a path as indicated by arrow H in  FIG. 3 . The first actuator  50  is configured to drive the drive shaft  52  in a vertical direction along a path as indicated by arrow C. A power connector  51  is used to connect the first actuator  50  to a power source for remote adjustment of the headrest assembly  30 . As shown in  FIG. 4A , a first latch bracket  54  is configured to connect to the drive shaft  52  of the first actuator  50 , for vertical movement therewith, at threaded connector  55 . The first latch bracket  54  includes a body portion  56  extending upwardly from threaded connector  55 , and also includes a slot  58  disposed through the body portion  56 . The slot  58  is a generally curved slot, or “banana slot”, that is configured to guide movement of the support assembly  32  ( FIG. 3 ) as the headrest member  34  moves from the upright position U to the folded position F along the path indicated by arrow B in  FIG. 3 . The first latch bracket  54  further includes a latch member  60  having a body portion  62  with an engagement notch  64  and a folded notch  65  disposed thereon. Extending orthogonally from the body portion  62  of the latch member  60 , a handle portion  66  is disposed for engagement by a user to move the latch member  60  between latched and unlatched positions L, UL along a path as indicated by arrow D. The latch member  60  is pivotally coupled to the body portion  56  of the first latch bracket  54  at attachment location  59 . The latch member  60  is further coupled to the body portion  56  via a biasing mechanism  68  which biases the latch member  60  towards the latched position L. 
     As further shown in  FIG. 4A , a second latch bracket  70  is configured to couple to the second end  40   b  of the cross member  40 . The second latch bracket  70  includes a connecting portion  72  and an orthogonally upright extending body portion  74 . In assembly, the connecting portion  72  is used to couple the second latch bracket  70  to the cross member  40  at second side  40   b . The body portion  74  of the second latch bracket  70  includes a slot  76  disposed therethrough, which is a curved slot or “banana slot” similar to slot  58  described above in connection with the first latch bracket  54 . A latch member  80  is pivotally coupled to the second latch bracket  70  and includes a body portion  82  having an engagement notch  84  and a handle portion  86 . Thus, the latch member  80  is a reciprocal latch member to latch member  60  described above in reference to the first latch bracket  54 . The latch member  80  is pivotally coupled to the body portion  74  of the second latch bracket  70  at attachment location  79 . The latch member  80  is configured to be engaged by a user at the handle portion  86  for rotational movement between the latched position L and the unlatched position UL along the path as indicated by arrow D for moving the headrest member  34  to the folded position F as shown in  FIG. 3 . The interaction between the first and second latch brackets  54 ,  70  for moving the headrest member  34  to the folded position F is further described below with reference to  FIGS. 4B-4D . 
     Referring now to  FIGS. 4B-4D , the folding movement of the headrest assembly  30  is shown. Referring specifically to  FIG. 4B , the headrest assembly  30  is shown with the headrest member  34  in the upright position U. The headrest member  34  generally includes a front portion  34   a  and a rear portion  34   b  having a cushion material disposed therebetween as further described below. The support assembly  32  generally includes first and second linkages  90 ,  92  which are pivotally coupled to the cross member  40  and headrest member  34  at opposite ends thereof. Specifically, the first linkage  90  includes an upper end  90   a  and a lower end  90   b  which are coupled to the headrest member  34  and the cross member  40 , respectively. As described in more detail below, the first linkage  90  is coupled to the cross member  40  at the lower end  90   b  via a pivot bar  43 , and is further coupled to the headrest member  34  at the upper end  90   a  via a pivot bar  45  that is coupled to a headrest bracket  100  of the headrest member  34 . Pivot bars  43 ,  45 , respectively, define fixed pivot locations P 1 , P 2 . The first linkage  90  further includes a body portion  90   c  from which a support arm  91  outwardly and downwardly extends. The support arm  91  is latchingly engaged with first latch bracket  54  via first fastener  93  disposed through slot  58  of the first latch bracket  54 . The first fastener  93  is retained in place by latch member  60  at engagement notch  64  when the latch member  60  of the first latch bracket  54  is in the latched position L. A trim attachment mount  35  is also disposed on the body portion  90   c  for coupling trim piece  38  ( FIG. 3 ) to the support assembly  32 . 
     With regard to the second linkage  92  shown in  FIG. 4B , an upper end  92   a  of the second linkage  92  is pivotally coupled to the headrest bracket  100  at connector bracket  102 , thereby defining pivot location P 3 . The second linkage  92  is further coupled to second latch bracket  70  at a lower end  92   b . The second linkage  92  is latchingly engaged with second latch bracket  70  via second fastener  94  disposed through slot  76  and retained in engagement notch  84  by latch member  80  while the latch member  80  of the second latch bracket  70  is in the latched position L. As noted above and shown in  FIG. 4B , the headrest assembly  30  is configured to allow the headrest member  34  to move from the upright position U to a folded position F along a path as indicated by arrow B. This folding action is made possible by moving the latch members  60 ,  80  of the first and second latch brackets  54 ,  70  from the latched position L, shown in  FIG. 4B , to the unlatched position UL shown in  FIG. 4C , and further described below. 
     Referring now to  FIG. 4C , the headrest assembly  30  is shown with the headrest member  34  being moved towards the folded position F along the path indicated by arrow B. In order to move the headrest member  34  towards the folded position F from the upright position U ( FIG. 4B ), the first and second latch brackets  54 ,  70  must be unlatched. A user unlatches the first and second latch brackets  54 ,  70  by engaging the handle portion  66  of latch member  60  and handle portion  86  of latch member  80  and moving the latch members  60 ,  80  towards the unlatched position UL along a path as indicated by arrow D. As shown in  FIG. 4C , with specific reference to first latch bracket  54 , the latch member  60  has been moved towards the unlatched position UL, such that first fastener  93  is no longer retained in engagement notch  64  of latch member  60 , and has further moved upward along a length of slot  58  of first latch bracket  54 . Second latch bracket  70  functions in a similar manner to release second fastener  94  for movement along slot  76 . In the unlatched position UL, the first and second latch brackets  54 ,  70  allow for the headrest member  34  to move towards the folded position F, as shown in  FIG. 4D . It is contemplated that the headrest member  34  may include a sufficient weight to gravitationally move towards the folded position F when the first and second latch brackets  54 ,  70  are unlatched. Unlatching the headrest assembly  30  causes rotation about pivot location P 1 , where, as described above, first linkage  90  couples to cross member  40  at pivot bar  43 . As further shown in  FIG. 4C  and with specific reference to first latch bracket  54 , the biasing mechanism  68  is in the form of a spring coupled to and disposed between the first latch bracket  54  and the latch member  60 , which will bias the latch member  60  towards the latched position L in assembly. 
     Referring now to  FIG. 4D , the headrest assembly  30  is shown in the fully folded position F relative to the cross member  40 . As noted above, the cross member  40  is generally enclosed in a seatback, such as seatback  16  shown above in  FIG. 3 . Thus, a user can unlatch the headrest assembly  30  by accessing the first and second latch brackets  54 ,  70  from within the seatback  16 . Thus, the first and second latch brackets  54 ,  70  are not generally accessible to a user in common usage, but can be accessed for folding the headrest assembly  30  by a manufacturer for shipping, storage, or for installation in a vehicle interior, such that headrest assembly  30  does not have to be removed from the vehicle seat  10  ( FIG. 1 ) to accommodate confined door openings. As further shown in  FIG. 4D , and with specific reference to first latch bracket  54 , the biasing mechanism  68  has pulled the latch member  60  towards the latched position L. The latch member  60  includes a ramped portion  65  which is configured to allow a user to move the headrest assembly  30  to the full upright position U by simply pushing the headrest member  34  along the path indicated by arrow B. Latch member  80  of the second latch bracket  70  is also configured in a similar manner, such that a user need not engage either latch bracket when moving the headrest member  34  towards the upright position U. 
     Referring now to  FIG. 5 , the headrest member  34  includes a cushion insert  110  that further receives a rigid backing panel  112 . The cushion insert  110  be made of a foam material, a resilient woven material, or other flexible cushion materials and combinations thereof as generally understood by one having ordinary skill in the art. It is contemplated that the cushion insert  110  may be an integrated part, as shown, or may be comprised of multiple parts have varying densities. The rigid backing panel  112  is coupled to a support plate  116  by a fastener  114 . The support plate  116  is configured to house a track assembly  120  having a pair of parallel tracks  122 ,  124 , as best shown in  FIG. 6 . The pair of parallel tracks  122 ,  124  slidably couple with upper and lower sliding elements  126 ,  128  of the track assembly  120  that are fixedly coupled with headrest bracket  100 . A second actuator  130  includes a drive shaft  132  that is coupled to the headrest member  34  for vertical adjustment of the headrest member  34  in a direction indicated by arrow V, as further described below with reference to  FIGS. 7A and 7B . The trim piece  38  is shown in  FIG. 5  as having an upper housing  38 a and a lower housing  38 b which encase the support assembly  32  in assembly. As further shown in  FIG. 5 , a support member  41  is shown exploded away from cross member  40  which is coupled to cross member  40  in assembly in the seatback  16  ( FIG. 3 ) for added strength and support. 
     Referring now to the embodiment shown in  FIG. 6 , four separate sliding elements  126   a ,  126   b ,  128   a  and  128   b  are included having a generally T-shaped cross section. However, it is contemplated that more, fewer, and alternatively shaped sliding elements may be included in additional embodiments of the track assembly  120 . Furthermore, the track assembly  120  may be alternatively configured with the tracks fixedly coupled with the headrest member  34  and the sliding elements fixedly coupled with the backing panel  112  of the cushion  110 . In addition, the track assembly  120  may otherwise be integrated in additional embodiments with portions of the cushion  110 , such as the backing panel  112 , or portions of the headrest member  34 . 
     Referring now to  FIG. 7A , the headrest assembly  30  is shown with the headrest member  34  in a fully down position DN. As noted above, the second actuator  130  ( FIG. 5 ) is configured to drive the headrest member  34  to a full upright position UP as shown in  FIG. 7B  along a path indicated by arrow V. As further shown in  FIGS. 7A and 7B , back casing  36  conceals the track assembly  120  and second actuator  130 , while the trim piece  38  encloses the support assembly  32  in assembly. With specific reference to  FIG. 7B , the headrest member  34  is in the full upright position UP as driven by the second actuator  130 . It is contemplated that a covering may be used to conceal any gaps formed between the trim piece  38  and back casing  36  as the headrest member  34  moves vertically along the path indicated by arrow V. 
     Referring now to  FIGS. 8A and 8B , the pivotal connection between the lower end  90   b  of the first linkage  90  and the cross member  40  defines a first lateral axis at pivot location P 1 . Further, the pivotal connection between the upper end  90   a  of the first linkage  90  and the headrest bracket  100  defines a second lateral axis at pivot location P 2 . Similarly, the second linkage  92  has a pivotal connection to the connector bracket  102  of the headrest bracket  100  at an upper end  92   a , which defines a third lateral axis at pivot location P 3 . When the headrest assembly  30  is in the latched position L, the lower end  92   b  of the second linkage  92  defines a fourth lateral axis P 4  at the pivotal connection of the lower end  92   b  and the second latch bracket  70  at second fastener  94 . With the  4  lateral axes P 1 -P 4 , the support assembly  32  of the headrest assembly  30  comprises a four-bar linkage that pivots at the fixed pivot points P 1 -P 4  to move the headrest member  34  between fore and aft positions FR, AF along a path indicated by arrow H. This movement is substantially horizontal to the user, while the headrest member  34  actually rotates forward and downward from the aft position AF to the fore position FR (as shown in  FIG. 8B ). Thus, the support assembly  32  defines a four bar linkage, wherein the first linkage  90  defines a primary linkage, and the second linkage  92  defines a secondary linkage. While both coupled to the headrest bracket  100 , lateral axes P 2  and P 3  are offset from one another, wherein third lateral axis P 3  is disposed above and rearward from the second lateral axis P 2 . Similarly, while both essentially coupled to the cross member  40 , lateral axes P 1  and P 4  are offset from one another, wherein fourth lateral axis P 4  is disposed below and rearward from the first lateral axis P 1 . This configuration provides for a consistent angle α of headrest member  34  as headrest member  34  moves between fore and aft positions FR, AF along the path indicated by arrow H. 
     Demonstrating the relative movement of the headrest member  34  between fore and aft positions FR, AF along the path indicated by arrow H, we must first look to  FIG. 4B , wherein the headrest member  34  is in both the full upright position U and the aft position AF. Referring now to  FIG. 8A , the headrest member  34  has moved forward towards the fore position FR to a partial forward position P that is approximately rotated 15° towards the fore position FR. As noted above, the headrest member  34  is driven along path H between the fore and aft positions FR, AF by first actuator  50  which is connected to the first latch bracket  54  via the drive shaft  52  at connection location  55 . As shown in  FIG. 8A , as compared to  FIG. 4B , the drive shaft  52 , as powered by the first actuator  50 , has moved upward to a height H 1 , and thereby driven the first latch bracket  54  upwards along the path C, described above, such that the headrest member  34  has rotated forward to the partial forward position P. Thus, when the headrest member  34  is move towards the fore position FR, the first latch bracket  54  will be vertically offset relative to the second latch bracket  70  as shown in  FIGS. 8A and 8B . 
     Referring now to  FIG. 8B , relative to  FIG. 8A , the headrest the drive shaft  52 , as powered by the first actuator  50 , has moved upward to a height H 2 , and thereby driven the first latch bracket  54  further upwards along the path C, such that the headrest member  34  has rotated further forward to the fully fore position FR which is approximately rotated 30° from the aft position AF. While the headrest member  34  is moved along the path indicated by arrow H, the angle α of the headrest member  34  is consistent between  FIGS. 4B, 8A, and 8B . Thus, as adjusted vertically and horizontally, the angle α of the headrest member  34  is maintained by cooperation between the  4  lateral axes P 1 -P 4  of the support assembly  32 . 
     As noted above, the headrest assembly  30  is adjustable in many different directions to allow for comfort customization by the user. The headrest assembly  30  is adjustable in that the headrest member  34  can move between fore and aft positions FR, AF ( FIGS. 8B, 4A ) along the path indicated by arrow H, and can also move between the full upright position UP, as shown in  FIG. 7B , to the full down position DN, shown in  FIG. 7A , along the path indicated by arrow V. The first and second actuators  50 ,  130  drive the horizontal movement and vertical movement as described above. The horizontal movement and vertical movement of the headrest member  34  is generally controlled by the user through remote electrical connections known in the art. As noted above, with reference to  FIGS. 4B-4D , the headrest member  34  of the present invention can also move from the upright position U, as shown in  FIG. 4B , to the folded position F, as shown in  FIG. 4D , along the path indicated by arrow B. This adjustment between upright and folded positions U, F is generally performed by the manufacturer for storage, shipping and installation of the vehicle seat  10  ( FIG. 1 ) and headrest assembly  30  in a vehicle. As noted above, the folding of the headrest assembly  30  allows the manufacture to store, ship and install the vehicle seat  10  in confined spaces, without have to separate the headrest assembly  30  from the vehicle seat  10 . Thus, a secure connection between the headrest assembly  30  and the vehicle seat  10  can be achieved and maintained from the assembly location to the installation location. 
     With specific regard to the movement of the headrest member  34 , it is contemplated that relative travel along the path V between full up position UP, as shown in  FIG. 7B , to the full down position DN, as shown in  FIG. 7A , may be about 55 mm in the vertical direction V. It is further contemplated that relative travel of the headrest member  34  along the path H between the aft position AF, as shown in  FIG. 4B , to the fore position FR, as shown in  FIG. 8B , may be about 80 mm in the horizontal direction H. It is further contemplated that relative travel of the headrest member  34  along the path B between upright position U, as shown in  FIG. 4B , to the folded position F, as shown in  FIG. 4D , may be about 91 mm in a generally horizontal direction, and about 95 mm in a generally vertical direction. These travel dimensions are exemplary only, and are not intended to limit the scope of the present invention in any way. One of ordinary skill in the art will appreciate that longer and shorter lengths of travel can be incorporated into the movement of the headrest member  34  of the present invention without departing form the spirit of the invention. 
     It will be understood by one having ordinary skill in the art that construction of the described invention and other components is not limited to any specific material. Other exemplary embodiments of the invention disclosed herein may be formed from a wide variety of materials, unless described otherwise herein. 
     For purposes of this disclosure, the term “coupled” (in all of its forms, couple, coupling, coupled, etc.) generally means the joining of two components (electrical or mechanical) directly or indirectly to one another. Such joining may be stationary in nature or movable in nature. Such joining may be achieved with the two components (electrical or mechanical) and any additional intermediate members being integrally formed as a single unitary body with one another or with the two components. Such joining may be permanent in nature or may be removable or releasable in nature unless otherwise stated. 
     It is also important to note that the construction and arrangement of the elements of the invention as shown in the exemplary embodiments is illustrative only. Although only a few embodiments of the present innovations have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited. For example, elements shown as integrally formed may be constructed of multiple parts or elements shown as multiple parts may be integrally formed, the operation of the interfaces may be reversed or otherwise varied, the length or width of the structures and/or members or connector or other elements of the system may be varied, the nature or number of adjustment positions provided between the elements may be varied. It should be noted that the elements and/or assemblies of the system may be constructed from any of a wide variety of materials that provide sufficient strength or durability, in any of a wide variety of colors, textures, and combinations. Accordingly, all such modifications are intended to be included within the scope of the present innovations. Other substitutions, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the desired and other exemplary embodiments without departing from the spirit of the present innovations. 
     It will be understood that any described processes or steps within described processes may be combined with other disclosed processes or steps to form structures within the scope of the present invention. The exemplary structures and processes disclosed herein are for illustrative purposes and are not to be construed as limiting. 
     It is also to be understood that variations and modifications can be made on the aforementioned structure without departing from the concepts of the present invention, and further it is to be understood that such concepts are intended to be covered by the following claims unless these claims by their language expressly state otherwise.