Patent Publication Number: US-2017360218-A1

Title: Apparatus and method for a foldable child containment system

Description:
RELATED APPLICATIONS 
     This application claims priority under 35 U.S.C. §119 to U.S. Provisional Patent Application No. 62/352,270 filed Jun. 20, 2016, and titled “Apparatus and Method for a Foldable Child Containment System,” the entire contents of which are hereby incorporated herein by reference for all purposes. 
    
    
     TECHNICAL FIELD 
     Embodiments disclosed herein are generally related to child containment systems, such as a playard, and more particularly to apparatuses and methods for a foldable child containment system. 
     BACKGROUND 
     Playards and other child containment systems can be configured to be folded for storage. However, conventional playards typically require multiple hands and the engagement or disengagement of multiple mechanisms in order to fully adjust the playard from a use configuration to a folded configuration. This can be difficult to do if the user is trying to fold the playard alone and/or has limited range of motion, such as for reaching into the playard to pull the middle section upward for folding. Further, this can be difficult for those who are limited to the amount of weight or force they can sustain during the folding and unfolding process. 
    
    
     
       BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS 
       For a more complete understanding of the present disclosure and certain features thereof, reference is now made to the following description, in conjunction with the accompanying figures briefly described as follows: 
         FIG. 1  presents a side elevation view of the foldable child containment system in the use configuration, in accordance with one exemplary embodiment. 
         FIGS. 2A-2B  are various views of the rail locking mechanism for the foldable child containment system, in accordance with one exemplary embodiment. 
         FIGS. 3A-3D  are various views of the webbing support coupled to portions of the top and bottom rails of the foldable child containment system, in accordance with one exemplary embodiment. 
         FIGS. 4A-4B  are various views of the rotatable bottom rail support system for the foldable child containment system, in accordance with one exemplary embodiment. 
         FIG. 5  is a partial perspective view of the one-hand rail release mechanism for use with the foldable child containment system, in accordance with one exemplary embodiment. 
         FIG. 6  is a perspective view of an end wall support system for the foldable child containment system, in accordance with one exemplary embodiment. 
         FIGS. 7A-7B  are various views of another rail locking mechanism for the foldable child containment system, in accordance with another exemplary embodiment. 
         FIG. 8  is a partial perspective view of another rail release mechanism for use with the foldable child containment system, in accordance with another exemplary embodiment. 
         FIGS. 9A-9B  are various views of a vertically telescoping vertical support system for use with the foldable child containment system, in accordance with another exemplary embodiment. 
         FIGS. 10A-10B  are various views of another rail locking mechanism for the foldable child containment system, in accordance with another exemplary embodiment. 
         FIGS. 11A-11C  are side elevation views showing the foldable child containment system being converted from a user configuration to a folded configuration, in accordance with one exemplary embodiment. 
         FIGS. 12A-D  are various views of another foldable child containment system in the use configuration, in accordance with another example embodiment of the disclosure 
         FIGS. 13A-E  are various views of the processor for adjusting the foldable child containment system of  FIGS. 12A-D  from a use configuration to a folded configuration. 
     
    
    
     DETAILED DESCRIPTION OF THE EXAMPLE EMBODIMENTS 
     Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings, in which example embodiments are shown. The concepts claimed and described herein may, however, be embodied in many different forms and should not be construed as limited to the example embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like, but not necessarily the same, elements throughout. 
     Certain dimensions and features of the example foldable child containment systems are described herein using the term “approximately.” As used herein, the term “approximately” indicates that each of the described dimensions is not a strict boundary or parameter and does not exclude functionally similar variations therefrom. Unless context or the description indicates otherwise, the use of the term “approximately” in connection with a numerical parameter indicates that the numerical parameter includes variations that, using mathematical and industrial principles accepted in the art (e.g., rounding, measurement or other systematic errors, manufacturing tolerances, etc.), would not vary the least significant digit. 
     In addition, certain relationships are described herein using the term “substantially.” As used herein, the terms “substantially” and “substantially equal” indicates that the equal relationship is not a strict relationship and does not exclude functionally similar variations therefrom. Unless context or the description indicates otherwise, the use of the term “substantially” or “substantially equal” in connection with two or more described dimensions or elements indicates that the equal relationship between the dimensions or elements includes variations that, using mathematical and industrial principles accepted in the art (e.g., rounding, measurement or other systematic errors, manufacturing tolerances, etc.), would not vary the least significant digit of the dimensions or elements. As used herein, the term “substantially constant” indicates that the constant relationship is not a strict relationship and does not exclude functionally similar variations therefrom. As used herein, the term “substantially parallel” indicates that the parallel relationship is not a strict relationship and does not exclude functionally similar variations therefrom. 
       FIG. 1  presents a side elevation view of the foldable child containment system  100  in the use configuration, in accordance with one example embodiment of the disclosure. Referring to  FIG. 1 , the foldable child containment system  100 , referred to hereinafter as a “playard” for example, can include a frame assembly that supports and defines a play surface  150  suspended above a floor or other ground surface. In one example, the frame assembly defines a rectangular base, a pair of opposed side walls or panels and a pair of opposed end walls or panels. The walls/panels can extend upward from play surface  150  to surround the play surface  150  and define a child containment area for an infant or toddler. The walls can be generally formed of soft goods, such as fabric material  122 ,  124  and see-through mesh material  126  that can be suspended from or otherwise supported by the frame assembly as shown. In one example, at least a portion of the frame assembly can be covered by fabric or another form of soft goods and can thus be largely concealed from view. 
     In one example, the frame assembly can include opposing top rail overhangs  102  disposed along the top portion of the corresponding end walls. The frame assembly can further include a first top rail  104 A and a second top rail  106 A, each rotatably coupled to and extending from opposing ends of one of the top rail overhangs  102 . The other top rail overhang  102  can include corresponding first  104 B and second  106 B top rails rotatably coupled to the top rail overhang. Each of the first top rails  104 A,  104 B and second top rails  106 A,  106 B can have a first end that is rotatably coupled to the corresponding end of one of the top rail overhangs and an opposing end that is operably coupled to one of a pair of rail locking mechanisms  118 A,  118 B. In one embodiment, the rail locking mechanisms  118 A,  118 B are disposed substantially at the midpoint of each of the main walls. 
     In one example, the top rails  104 A,  106 A,  104 B,  106 B, top rail overhangs  102  and the rail locking mechanisms  118 A,  118 B collectively define a top end of the child containment area. In certain example embodiments, each of the top rails  104 A,  106 A,  104 B,  106 B and overhangs  102  can be constructed in whole or in part from metal or plastic rod or tubing. In certain example embodiments, each of the top rails  104 A,  106 A,  104 B, and  106 B and top rail overhangs  102  can have a circular or substantially circular cross-sectional shape. In one example, the circular or substantially circular cross-sectional shape can increase the ease of slidably inserting and passing the top rails  104 A,  106 A,  104 B, and  106 B through one or more channels along the top end of the fabric or other soft goods material  122 . 
     The playard  100  can also include a pair of vertical support systems  116 . Each vertical support system  116  can be operatively coupled along a top end to one or more top hinges  128  and along an opposing bottom end to a horizontal leg support  108 . In one example, each vertical support system  116  can be vertically extending and located adjacent one of the corresponding end walls of the playard  100 . The vertical support system can be configured to provide vertical support for the top rails  104 A,  106 A,  104 B, and  106 B with respect to the bottom rail support system  120 . 
     Each horizontal leg support  108  can include a horizontally or substantially horizontally extending support member  108  that can be coupled to a bottom end of the vertical support system  116 . In one example embodiment, one of the horizontal leg supports  108  can include a first leg  110  disposed at and extending vertically downward from one end of the support  108  and a second leg  110  disposed at and extending vertically downward from an opposing second end of the support  108 . Each of the legs  110  can be configured to rest along the ground or other surface. In one example embodiment, the other of the horizontal leg supports  108  can include a first wheel support  112  and wheel  114  disposed at and extending vertically downward from one end of the support  108  and a second wheel support  112  and wheel  114  disposed at and extending vertically downward from an opposing second end of the support  108 . Each of the wheels  114  can be configured to roll along the ground or other surface. 
     Each horizontal leg support  108  can also include one or more bottom rail support hinges  424  and  426  and one or more fold support hinges  130 . Each bottom rail support hinge can be coupled to the horizontal leg support  108  and/or the vertical support system  116  and rotatably coupled to at least a portion of the bottom rail support system  120 . The one or more fold support hinges  130  can be coupled to the horizontal leg support and rotatably coupled to a fold support member  416  (see  FIG. 4A ). In one example embodiment, at least a portion of the bottom rail support system  120  includes a plurality of metal or plastic supporting rods or tubing that are configured to support the play surface  150  when the playard  100  is in the use configuration. 
       FIGS. 2A-2B  are various view of a rail locking mechanism  118 A,  118 B that can be used for locking and unlocking the top rails  104 A,  104 B and  106 A,  106 B of the playard  100  according to one example embodiment of the disclosure. Now referring to  FIGS. 1-2B , the rail locking mechanism  118 A,  118 B, can include two opposing ends that define passageways, one for receiving an end portion of the top rail  104 A (or  106 A on the opposing set of top rails) and another end for receiving an end portion of the top rail  104 B (or  106 B on the opposing set of top rails). The top rail  104 A (and similarly  106 A) can include a first rivet  208  and a second rivet  220 . The top rail  104 B (and similarly  106 B) can include a first rivet  210  and a second rivet  222 . Each of the rivets  208 ,  210  can extend through the body of the respective top rail  104 A (or  106 A),  104 B (or  106 B), the slide plate  202 , and the top cover plate or saddle  230  in a direction orthogonal or substantially orthogonal to the longitudinal axis of the respective top rail. In addition, each of the rivets  220 ,  222  can extend through the body of the respective top rail  104 A (or  106 A),  104 B (or  106 B), and the slide plate  202 . 
     Each of the ends of the top rails  104 A,  104 B (and corresponding  106 A and  106 B) can include a slotted opening  250  disposed through a portion of the end of the respective top rail and extending along the longitudinal axis of the respective top rail. The rail locking mechanism  118 A can also include a slide plate  202  that can be at least partially disposed within the respective slotted openings of each of the top rails  104 A,  104 B (and corresponding  106 A and  106 B for mechanism  118 B). The slide plate  202  can include a first enclosed slot  204  for receiving the first rivet  208  of the top rail  104 A and a second enclosed slot  206  for receiving the first rivet  210  of the top rail  104 B. Each of the first enclosed slot  204  and second enclosed slot  206  can extend generally in the longitudinal direction of the top rails  104 A,  104 B when the playard  100  is in the use configuration. Each of the first enclosed slot  204  and the second enclosed slot  206  are configured to maintain each of the top rail  104 A and top rail  104 B in slidable connection with the rail locking mechanism  118 A. 
     The rail locking mechanism  118 A,  118 B can also include a first locking slot  212  and a second locking slot  216 . The first locking slot  212  can be configured to receive the second rivet  220  of the top rail  104 A. The first locking slot  212  can include an exit aperture disposed along a portion of the bottom end of the first locking slot  212  for allowing the second rivet  220  to exit the first locking slot  212  when the playard  100  is being adjusted from the use configuration to the folded configuration, as shown in  FIGS. 11A-11C , or to allow the second rivet  220  to re-enter the first locking slot  212  when the playard is being adjusted from the folded configuration to the use configuration. The first locking slot  212  can also include an angled entry surface  214  that the second rivet  220  can ride along to direct the second rivet  220  back into the first locking slot  212 . The rail locking mechanism  118 B and top rails  106 A,  106 B are configured in substantially the same manner. 
     The second locking slot  216  can be configured to receive the second rivet  222  of the top rail  104 B. The second locking slot  216  can include an exit aperture disposed along a portion of the bottom end of the second locking slot  216  for allowing the second rivet  222  to exit the second locking slot  216  when the playard  100  is being adjusted from the use configuration to the folded configuration, as shown in  FIGS. 11A-11C , or to allow the second rivet  222  to re-enter the second locking slot  216  when the playard  100  is being adjusted from the folded configuration to the use configuration. The second locking slot  216  can also include an angled entry surface  218  that the second rivet  222  can ride along to direct the second rivet  222  back into the second locking slot  216 . The rail locking mechanism  118 B and top rails  106 A,  106 B are configured in substantially the same manner. 
     The rail locking mechanism  118 A,  118 B can also include a cable attachment aperture  224  for attaching a cable (not shown) thereto. The cable can extend through an internal passageway of the top rail  104 A and another cable or the same cable can also extend through the internal passageway of the top rail  106 A from the corresponding cable attachments  224  of the rail locking mechanisms  118 A,  118 B to a rail release mechanism, described hereinafter. The rail release mechanism can cause tension in the cable (or each of the cables) that pulls the corresponding rail locking mechanisms  118 A,  118 B in the direction “A” from a locked position to an unlocked position. In the unlocked position, the second rivets  220 ,  222  can pass through the corresponding exit apertures for each of the respective first locking slot  212  and second locking slot  216 . Once the second rivets  220 ,  222  pass through the corresponding exit apertures, each corresponding top rail  104 A,  104 B can rotate from a generally horizontal position to a vertical or substantially vertical position as the playard  100  is adjusted into the folded configuration, as shown in  FIG. 11C . The rail locking mechanism  118 B and top rails  106 A,  106 B are configured and move in substantially the same manner. 
     Each rail locking mechanism  118 A,  118 B can also include a spring biasing mechanism (not shown) coupled to the slide plate  202 . The spring biasing mechanism can bias the slide plate  202  into the locked position. The rail locking mechanism  118 A,  118 B can also include a top cover plate or saddle  230  that is disposed over at least a portion of the top surface of the corresponding rail locking mechanism  118 A,  118 B. The saddle  230  can be configured to limit access to the portion of the mechanism  118 A,  118 B where the ends of the top rails  104 A,  104 B or  106 A,  106 B come close to one-another in the use configuration and create a potential pinch point. Similarly, each rail locking mechanism  118 A,  118 B can also include a pair of side plates  232 , each disposed on opposing lateral sides of the top rails  104 A,  104 B or  106 A,  106 B. In one example embodiment, the side plates  232  can be movably coupled to the top rail  104 A via the first rivet  208  and to the top rail  104 B via the first rivet  210 . The rail locking mechanism  118 B and top rails  106 A,  106 B are configured in substantially the same manner. 
       FIGS. 3A-3D  are various views of a webbing support  302  coupled to portions of the top and bottom rails of the playard  100  according to one example embodiment of the disclosure. Now referring to  FIGS. 1 and 3A-3D , the webbing support  302  links or attaches the top rail overhang  102  to the bottom rail support system  120 . In certain example embodiments, two webbing supports  302 A,  302 B ( FIG. 3D ) can be used, each linking the top rail overhang  102  to the bottom rail support system  120 . The webbing support  302  can be elastic or inelastic. In one example embodiment, the webbing supports  302 A,  302 B can be constructed of seat belt webbing. Each webbing support  302 A,  302 B can have a first end coupled to the top rail overhang  102  with a coupling device  304  ( 304 A and  304 B in  FIG. 3C ) and a distal second end coupled to the bottom rail support system  120  with a coupling device  306 . In one example, the coupling device is a rivet or screw that is driven through the webbing and a plastic or metal attachment device that is attached to the corresponding tubing of the top rail overhang  102  or the bottom rail support system  120 ; however, other forms of coupling devices, such as a loop formed in the webbing, buttons, snaps, ties, latching devices and the like can be substituted therein. 
     Each webbing support  302 A,  302 B can have it first end coupled to the top rail overhang  102  behind or outside of the top end hinges  128  and the corresponding distal second ends coupled to a portion of the bottom rail support system  120  that is rotatably coupled to one or more of the bottom end hinges  424 ,  426  ( FIG. 4 ). In certain example embodiments, each webbing support  302 A,  302 B can be totally or partially enclosed in fabric or other soft goods material  308 . In use, when the rail locking mechanism is adjusted from the locked position to the unlocked position, and the top rails  104 A,  104 B,  106 A,  106 B rotate downward from the horizontal position to the vertical or substantially vertical position, each webbing support  302 A,  302 B will pull up on the bottom rail support system  120 . This causes the entire floor of the playard  100  to fold upwards giving us the accordion shape. 
       FIGS. 4A-4B  are various views of the rotatably bottom rail support system  120  for the playard  100  according to one example embodiment of the disclosure. The bottom rail support system  120  will be described with reference to the framing and coupling/rotational devices extending from one end of the playard  100  to the center of the bottom rails support system  120 . However, as shown in  FIG. 4A , it is understood that a mirror image of the framing and coupling/rotational devices exists for the other half of the bottom rail support system  120  and operates in the same or substantially the same manner. 
     The bottom rail support system  120  can include a main bottom rail  402  having a first end  404  and a second end  406 . The main bottom rail  402  can include a portion between the first end  404  and second end  406  that extends substantially parallel with the longitudinal axis of the leg support  108 . This portion can be rotatably coupled to the horizontal leg support  108  by way of one or more hinges, such as bottom rail support hinges  424 ,  426 . The bottom rail support hinges  424 ,  426  are configured to rotate the main bottom rail  402  from a substantially horizontal position when the playard  100  is in a use configuration to a vertical or substantially vertical orientation when the playard  100  is in the folded configuration, as shown in  FIG. 11C . The first end  404  of the main bottom rail  402  can be rotatably coupled to a center support rail  412  by way of a hinge  408 . The second end  406  of the main bottom rail  402  can be rotatably coupled to the center support rail  412  by way of a hinge  410 . In one example embodiment, the center support rail  412  can have a longitudinal axis that extends in a direction parallel or substantially parallel to the longitudinal axis of the leg support  108 . 
     The bottom rail support system  120  can also include a fold support member  416  having a first end  418  and a distal second end  420 . In one example embodiment, the fold support member  416  can have a longitudinal axis that extends in a direction orthogonal or substantially orthogonal to the longitudinal axis of the center support rail  412 . The first end  418  of the fold support member  416  can be rotatably coupled to the leg support  108  via a hinge  130 . The second end  420  of the fold support member  416  can be rotatably coupled to the center support rail  412  via a hinge  422 . The fold support member  416  can be configured to rotate, by way of the hinges  130 ,  422 , from a substantially horizontal position when the playard  100  is in a use configuration to a vertical or substantially vertical orientation when the playard  100  is in the folded configuration, as shown in  FIG. 11C . 
     In certain example embodiments, the bottom rail support system  120  can also include a second bottom rail  430  having a first end coupled to the mail bottom rail  402  generally near the first end  404  and a second end coupled to the main bottom rail  402  generally near the second end  406 . In one example, the second bottom rail  430  can be configured to provide additional support for the bottom rail support system  120  and for the play surface  150  of the playard  100  disposed thereabove. While the example bottom rail support system describes only a single second bottom rail  430 , in other example embodiments more than one second bottom rail may be used. Further, while the rails of the bottom rail support system  120  in  FIGS. 4A and 4B  have certain shapes, these are for example only as different shapes or rails may also be used. In addition, while some rails of the bottom rail support system  120  may be described as a single unitary piece, this is also for example purposes only, as each may be made from one or multiple pieces of solid core and/or hollow tubing material. The inclusion of multiple hinge points between the center support rail  412  and the leg support  108  aid in the folding process. Further, the shape of the rails of the bottom rail support system  120  and the location of the hinges  130 ,  424 ,  426  keeps the end panels/walls vertical when adjusting the playard  100  from the use configuration to the folded configuration, as shown in  FIGS. 11A-11C , thereby allowing for a true one-hand foldable playard  100 . 
       FIG. 5  is a partial perspective view of a one-hand rail release mechanism  502  than can be used with the foldable playard  100  according to one example embodiment of the disclosure. Now referring to  FIGS. 1, 2A-2B, and 5 , the one-hand rail release mechanism  502  can include a grip surface. The one-hand rail release mechanism can be coupled to the top rail overhang  102  along one end of the playard  100 . The mechanism  502  can also include a slide lock  504  disposed along the top end of the grip surface. The slide lock  504  can be spring-biased with a spring or other device into a locked position. A user can apply a force against the slide lock in the direction “B” to move the slide lock  504  from the locked to the unlocked position. 
     The one-hand rail release mechanism  502  can also include a release button  506 . In one example, the release button  506  can be disposed generally along the bottom end of the grip surface. The release button  506  can be spring-biased with a spring or other device into an extended position. A user can apply a generally upward force on the release button  506  to depress the button  506  into a retracted position. The one-hand rail release mechanism  502  can also be coupled to a first cable  508  and a second cable  510 . In one example, the first cable  508  can extend through one or more railings, including the top rail  106 A and is attached at a distal end to the slide plate of the rail locking mechanism  118 B. Further, the second cable  510  can extend through one or more railings, including the top rail  104 A and is attached at a distal end to the slide plate of the rail locking mechanism  118 A. 
     The one-hand rail release mechanism  502  can also include a cable tensioner. The cable tensioner can be employed by rotating the grip surface in the direction “C” from a first position to a second position when both the slide lock  504  is unlocked and the button  506  is depressed. In one example, the cable tensioner cannot be rotated unless both the slide lock  504  is unlocked and the button  506  is depressed. The cable tensioner can be spring-biased with a spring or other device into the first position. 
     In use, the user can use a single hand to slide the slide lock  504  in the direction “B” from the locked to the unlocked position, depress the release button  506 , and rotate the grip surface of the mechanism  502  in the direction “C”. The rotation of the mechanism  502  in the direction “C” will generate a tension on each of the cables  508 ,  510  and pull each of the slide plates in the direction “A” from the locked to the unlocked position, thereby allowing the second rivets  220 ,  222  to exit the corresponding locking slots  212 ,  216  and allowing the top rails  104 A,  104 B,  106 A,  106 B to rotate from a generally horizontal position to a vertical or substantially vertical position as the playard is adjusted from the use configuration to the folded configuration, as shown in  FIGS. 11A-11C . 
       FIG. 6  is a perspective view of an end wall support system for the foldable playard  100  according to one example embodiment of the disclosure. Referring now to  FIGS. 1 and 6 , the example end wall support system can include a pair of vertical support members  116  each coupled at one end to the leg support  108  and coupled at a distal second end to the top rails  104 A,  106 A. The vertical support members  116  can be spaced apart with an opening provided therebetween. In the opening, a support tower  602  or secondary support can be coupled along a first side to the first vertical support member  116  and along a second opposing side to the second vertical support member  116 . In one example, the support tower  602  has the shape of a rounded rectangle, however other shapes are contemplated herein. Further, while the support tower is shown as a single piece, in other example embodiments, multiple secondary supports may be used, each having a first portion coupled to the first vertical support  116  and a second portion coupled to the second vertical support  116 . 
     In one example embodiment, the hinges  128 ,  130 ,  424  and  426  are coupled to the support tower  602 . The use of the support tower  602  can eliminate the need for corner posts on each corner of the playard  100 . This allows for the use of mesh material  126  along the corners of the playard  100  rather than an opaque material such as a plastic or metal corner post and/or fabric or other soft goods surrounding that corner post, resulting in a more open and visible playard  100 . 
       FIGS. 7A-7B  are various views of another rail locking mechanism that can be used with the foldable playard  100  according to one example embodiment of the disclosure. Now referring to  FIGS. 1 and 7A-7B , the geared rail locking mechanism  118 A,  118 B will be described with reference to mechanism  118 A and top rails  104 A and  104 B. However, it is understood that the playard includes another rail locking mechanism  118 B that interacts with top rails  106 A and  106 B in a manner substantially the same as will be described with  118 A,  104 A, and  104 B. The rail locking mechanism  118 A can include a housing  702  that can include two opposing ends  710 .  712  that define passageways, one  710  for receiving an end portion of the top rail  104 A and another  712  end for receiving an end portion of the top rail  104 B. The housing includes a top cover and a pair of side walls to prevent access to potential pinch points. 
     At least partially disposed within the housing  702  is a first gear latch  704  and a second gear latch  706 . Each of the first  704  and second  706  gear latches can be rotatably coupled to the housing via a pin axle or other device. Each of the first  704  and second  706  gear latches includes a main body with an outer surface. Along at least a portion of the outer surface are multiple gear teeth  708  that engage with the gear teeth  708  on the other gear latch. Each of the gear latches  704 ,  706  also include a curved recessed surface  714  for receiving at least a portion of the corresponding top rail  104 A,  104 B thereon. In one example, the curved recessed surface  714  has a depth of less than one inch, such that less than one inch of the bottom surface of the end of the corresponding top rail  104 A,  104 B can rest on the curved recessed surface  714  when the mechanism  118 A is in the locked configuration. 
     Each gear latch  704 ,  706  can also include a tube wing  716 . The tube wing  716  is generally positioned immediately below the curved recessed surface  714 . The tube wing  716  can include a straight or arcuate top edge that extends from the curved recessed surface  714  and projects downward therefrom to provide a sliding surface for the corresponding top rail  104 A,  104 B when the top rail is not in the curved recessed surface  714 . The first gear latch  704  can also include a cable aperture  718  for receiving and coupling a release cable (such as the release cable  510  in  FIG. 5 ) thereto. 
     As tension is applied to a cable, it causes the first gear latch  704  to rotate in the direction “D”. The gear teeth  708  of the first gear latch  704  interact with the gear teeth  708  of the second gear latch  706  to cause a corresponding rotation of the second gear latch  706  in the direction “E”. The rotation of both the first gear latch  704  and the second gear latch  706  at substantially the same rate causes both the top rail  104 A and the top rail  104 B to slip out of the corresponding curved recess surfaces  714  and to begin sliding down the corresponding tube wing  718  in each gear latch  704 ,  706 . The top rails  104 A,  104 B are then able to rotate from the horizontal position to a vertical or substantially vertical position as the playard  100  is adjusted from the use configuration to the folded configuration, as shown in  FIGS. 11A-11C . As the top rails are rotating downward, each tube wing  716  prevents its corresponding top rail  104 A,  104 B from moving back up into the curved recess surface  714  and into the locked position. 
       FIG. 8  is a partial perspective view of another rail release mechanism for use with the foldable playard  100  according to one example embodiment of the disclosure. While the example embodiment of  FIG. 8  shows only one rail release mechanism, it is understood that more than one can be provided, such as two, one for releasing rail locking mechanism  118 A and another for releasing rail locking mechanism  118 B.  FIG. 8  will be described with reference to top rails  104 A,  104 B and rail locking mechanism  118 A. However, it is understood that a second rail release mechanism for use with top rails  106 A,  106 B and rail locking mechanism  118 A can be constructed an operate in substantially the same manner. 
     Referring now to  FIGS. 1 and 8 , the rail release mechanism can be rotatably coupled to the top rail overhang  102  via a coupling device  804 , such as a pin, nut and bolt, or other known device. The rail release mechanism can include a trigger member  802  that extends from the coupling point  804  and is rotatable about the coupling point  804 . In one example, the rail release mechanism can also include a spring or other biasing device to bias the trigger member  802  in a first position. One end of a cable (such as the cable  510  of  FIG. 5 ) can be coupled to the trigger member  802  and the other end of the cable can be coupled to the slide plate of the rail locking mechanism  118 A. When a user pulls, pushes, presses, or otherwise engages the trigger member  802  from the first position towards a second position, it will cause the trigger member  802  to rotate about the coupling point  804  and generate a tension on the cable that can pull the slide plate from the locked to the unlocked position, thereby allowing the top rails  104 A,  104 B to rotate from the horizontal position to the vertical or substantially vertical position as the playard  100  is adjusted from a use configuration to a folded configuration, as shown in  FIGS. 11A-11C . 
       FIGS. 9A-9B  are various views of a vertically telescoping vertical support system that can be incorporated into the foldable playard  100  according to one example embodiment of the disclosure. Referring to  FIGS. 1, 9A, and 9B , the vertically telescoping vertical support system can include a pair of vertically extending supports  116 A,  116 B. Each vertically extending support  116 A,  116 B can include a first member  902 A,  902 B and a second member  904 A,  904 B. The second member  904 A,  904 B can include a channel or hollow passageway that extends along the longitudinal axis of the corresponding second member  904 A,  904 B and is configured to receive at least a portion of the corresponding first member  906 A,  906 B therein. The second member  904 A,  904 B can include a first end coupled to the leg support  108  and a distal second end that extends vertically up from the leg support  108 . The first member  902 A,  902 B can include a first end coupled to the top rail overhang  102  and a distal second end that extends vertically downward from the top rail overhang  102 . The second end of the first member  902 A,  902 B is disposed within the channel of the corresponding second member  904 A,  904 B. The channel of one or both of the second members  904 A,  904 B can also include a manually adjustable latching mechanism  908 . 
     One or both of the first members  902 A,  902 B can also include a channel or hollow passageway extending along the longitudinal axis of the corresponding first member  902 A,  902 B. An actuator mechanism  906 A,  906 B, such as a cable or metal rod, can be disposed within the channel of one or both of the first members  902 A,  902 B. One end of the actuator mechanism  906 A,  906 B can operably engage the rotating latch  908 . For example, each first member  902 A,  902 B can include a hole or opening in the outer wall of the corresponding first member  902 A,  902 B that the rotating latch  908  can engage/be disposed at least partially within (to hold the first member  902 A,  902 B in the extended position) and disengage (to allow the first member  902 A,  902 B to slide into the corresponding second member  904 A,  904 B in a telescoping manner) to reduce the overall height of the playard  100  when it is in the folded configuration, as shown in  FIG. 11C . The other end of the actuator mechanism  906 A,  906 B can be operably coupled to an actuator  910 . The actuator  910  can include a handle  912 . Pulling or squeezing the handle  912  can cause a corresponding movement in each of the actuator mechanisms  906 A,  906 B and cause the latch  908  to rotate from a first position (where it is at least partially within an aperture of the first member  902 A,  902 B) to a second position (where it is completely out of the aperture in the first member  902 A,  902 B) and allows the first member  902 A,  902 B to slide further downward into the channel of the second member  904 A,  904 B. 
     In one example, the handle  912  remains in the pressed or squeezed position until the first members  902 A,  902 B are raised back out of the channel of the corresponding second members  904 A,  904 B and the latch  908  rotates back into engagement with the hole in the corresponding first member  902 A,  902 B. In this example embodiment, the handle  912  can act as a lockout feature, preventing the playard  100  from being adjusted from the folded configuration into the use configuration until one or more latches  908  re-engage with the corresponding first members  902 A,  902 B. In addition, in certain example embodiments, when the handle  912  is pressed or squeezed, in can be at least partially positioned within a groove on the top rail  102 . By fitting a portion of the handle  912  in the top rail  102  when pressed or squeezed, the top rails  104 A,  104 B,  106 A,  106 B cannot be unfolded until the first members  902 A,  902 B are raised back out of the channel of the corresponding second members  904 A,  904 B and the latch  908  rotates back into engagement with the hole in the corresponding first member  902 A,  902 B, allowing the handle  912  to be released back into its unpressed/unsqueezed position 
       FIGS. 10A-10B  are various views of another rail locking mechanism for the foldable playard  100  according to one example embodiment of the disclosure. The example of  FIGS. 10A-10B  is a modification of the slide plate  202  of  FIGS. 2A-2B . Now referring to  FIGS. 1 and 10A-10B , the rail locking mechanism  118 A,  118 B will be described with reference to mechanism  118 A and top rails  104 A and  104 B. However, it is understood that the playard  100  includes another rail locking mechanism  118 B that interacts with top rails  106 A and  106 B in a manner substantially the same as will be described with reference to  118 A,  104 A, and  104 B. As shown in  FIGS. 10A-10B , the top rail  104 A can include a first rivet  208  and a second rivet  220 . The top rail  104 B can include a first rivet  210  and a second rivet  222 . Each of the rivets  208 ,  210 ,  220 ,  222  can extend through the body of the respective top rail in a direction orthogonal or substantially orthogonal to the longitudinal axis of the respective top rail. 
     Each of the ends of the top rails  104 A,  104 B can include a slotted opening disposed through a portion of the end of the respective top rail and extending along the longitudinal axis of the respective top rail. The rail locking mechanism  118 A can also include a slide plate  1002  that can be at least partially disposed within the respective slotted openings of each of the top rails  104 A,  104 B. The slide plate  1002  can include a first enclosed slot  1004  for receiving the first rivet  208  of the top rail  104 A and a second enclosed slot  1006  for receiving the first rivet  210  of the top rail  104 B. Each of the first enclosed slot  1004  and second enclosed slot  1006  can extend generally in the longitudinal direction of the top rails  104 A,  104 B when the playard  100  is in the use configuration. Each of the first enclosed slot  1004  and the second enclosed slot  1006  are configured to maintain each of the top rail  104 A and top rail  104 B in slidable connection with the rail locking mechanism  118 A. 
     The rail locking mechanism  118 A can also include a first locking slot  1008  and a second locking slot  1010 . The first locking slot  1008  can be configured to receive the second rivet  220  of the top rail  104 A. The first locking slot  1008  can include an opening along a portion of the bottom end of the first locking slot  1008  that leads into a rivet cam or pathway  1020  that the second rivet  220  follows when the rail locking mechanism  118 A is in the unlocked position and when the playard  100  is being adjusted from the use configuration to the folded configuration, as shown in  FIGS. 11A-11C . In one example, the rivet path  1020  is curved. 
     The second locking slot  1010  can be configured to receive the second rivet  222  of the top rail  104 B. The second locking slot  1010  can include an opening along a portion of the bottom end of the first locking slot  1008  that leads into a rivet cam or pathway  1022  that the second rivet  222  follows when the rail locking mechanism  118 A is in the unlocked position and when the playard  100  is being adjusted from the use configuration to the folded configuration, as shown in  FIGS. 11A-11C . In one example, the rivet path  1022  for the rivet  222  is curved in a direction opposite the rivet path for the second rivet  220   
     The rail locking mechanism  118 A of  FIGS. 10A-10B  can also include a cable attachment aperture (not shown) for attaching a cable (not shown) thereto. The cable can extend through an internal passageway of the top rail  104 A and another cable or the same cable can also extend through the internal passageway of the top rail  106 A from the corresponding cable attachments  224  of the rail locking mechanisms  118 A,  118 B to a rail release mechanism, described hereinafter. The rail release mechanism can cause tension in the cable (or each of the cables) that pulls the corresponding rail locking mechanisms  118 A,  118 B in the direction “A” from a locked position to an unlocked position. In the unlocked position, the second rivets  220 ,  222  can pass through the corresponding opening in the bottom of each of the respective first locking slot  1008  and second locking slot  1010 . Once the second rivets  220 ,  222  pass through the corresponding opening, each second rivet  220 ,  222  can continue to move along the corresponding rivet paths  1020 ,  1022  as the corresponding top rail  104 A,  104 B rotates from a generally horizontal position to a vertical or substantially vertical position as the playard  100  is adjusted into the folded configuration, as shown in  FIG. 11C . 
     Each rail locking mechanism  118 A can also include a spring biasing mechanism (not shown) coupled to the slide plate  1002 . The spring biasing mechanism can bias the slide plate  1002  into the locked position. The rail locking mechanism  118 A can also include a top cover plate or saddle that is disposed over at least a portion of the top surface of the corresponding rail locking mechanism  118 A,  118 B. The saddle can be configured to limit access to the portion of the mechanism  118 A where the ends of the top rails  104 A,  104 B abut in the use configuration and create a potential pinch point. Similarly, the rail locking mechanism  118 A can also include a pair of side plates, each disposed on at least a portion of the opposing lateral sides of the top rails  104 A,  104 B. In one example embodiment, the side plates can be movably coupled to the top rail  104 A via the first rivet  208  and to the top rail  104 B via the first rivet  210 . 
       FIGS. 12A-D  present various views of another foldable child containment system  1200  in the use configuration, in accordance with one example embodiment of the disclosure. For example,  FIG. 12A  presents a perspective view of the frame structure for the foldable child containment system  1200  without the soft goods making up the side walls, end walls and bottom panel being shown in accordance with on example embodiment. Referring to  FIG. 12A , the foldable child containment system  1200 , referred to hereinafter as a “playard” for example, can include a frame assembly that supports and defines a play surface or bottom/floor panel that is substantially the same as the play surface  150  of  FIG. 1 , suspended above a floor or other ground surface that the playard  1200  is placed upon. In one example, when the soft goods are coupled to the frame assembly  1202  (e.g., at least one or more of the top side rails and the top end rails), the frame assembly  1202  and the soft goods define a rectangular or substantially rectangular base surface or floor panel, a pair of opposed side walls or panels and a pair of opposed end walls or panels. The walls/panels can extend upward from the floor panel to surround the floor panel and define, along with the floor panel, a child containment area for an infant or toddler. The walls can be generally formed of soft goods, such as fabric material substantially similar to the fabric material  122 ,  124  and see-through mesh material  126  of  FIG. 1  and can be suspended from or otherwise supported by the frame assembly  1202  similar to that shown in  FIG. 1 . In one example, at least a portion of the frame assembly  1202  can be covered by fabric or another form of soft goods and can thus be largely concealed from view. 
     In one example, the frame assembly  1202  can include opposing top end rails  1214 ,  1216  disposed along the top portion of the corresponding end walls. Each of the top end rails  1214 ,  1216  can be constructed of plastic or metal and can be a tube that includes a hollow channel extending from a first end to an opposing second end of each of the top end rails  1214 ,  1216 . 
     The frame assembly  1202  can further include a pair of top side rail assemblies. Each top side rail assembly can include a first top side rail  1220 ,  1224 , a second top side rail  1218 ,  1222  and a rail locking mechanism  1226 A,  1226 B. Each of the top side rail assemblies can have a first end and a distal second end and can extend generally from the one top end rail  1214  to the other top end rail  1216 . 
     For example, the top end rail  1214  can have a first end coupled to the first top rail coupling housing  1232 A and a second distal end coupled to the second top rail coupling housing  1232 B. The top side rail  1218  can have a first end pivotably coupled to the second top rail coupling housing  1232 B and a second distal end pivotally coupled to the first rail locking mechanism  1226 A. The top side rail  1218  can be configured to rotate about a first rotation axis at the pivotable coupling to the second top rail coupling housing  1232 B and configured to rotate about a second rotation axis at the pivotable coupling to the first rail locking mechanism  1226 A. In one example, the first rotation axis and the second rotation axis are parallel. 
     The top side rail  1220  can have a first end pivotably coupled to the fourth top rail coupling housing  1234 B and a second distal end pivotally coupled to the first rail locking mechanism  1226 A. The top side rail  1220  can be configured to rotate about a third rotation axis at the pivotable coupling to the fourth top rail coupling housing  1234 B and configured to rotate about a fourth rotation axis at the pivotable coupling to the first rail locking mechanism  1226 A. In one example, the first rotation axis, second rotation axis, third rotation axis, and fourth rotation axis are parallel to one another. 
     The top end rail  1216  can have a first end coupled to the third top rail coupling housing  1234 A and a second distal end coupled to the fourth top rail coupling housing  1234 B. The top side rail  1224  can have a first end pivotably coupled to the third top rail coupling housing  1234 A and a second distal end pivotally coupled to the second rail locking mechanism  1226 B. The top side rail  1224  can be configured to rotate about a fifth rotation axis at the pivotable coupling to the third top rail coupling housing  1234 A and configured to rotate about a sixth rotation axis at the pivotable coupling to the second rail locking mechanism  1226 B. In one example, the first rotation axis, second rotation axis, third rotation axis, fourth rotation axis, fifth rotation axis, and sixth rotation axis are parallel to one another. 
     The top side rail  1222  can have a first end pivotably coupled to the first top rail coupling housing  1232 A and a second distal end pivotally coupled to the second rail locking mechanism  1226 B. The top side rail  1222  can be configured to rotate about a seventh rotation axis at the pivotable coupling to the first top rail coupling housing  1232 A and configured to rotate about an eighth rotation axis at the pivotable coupling to the second rail locking mechanism  1226 B. In one example, the first rotation axis, second rotation axis, third rotation axis, fourth rotation axis, fifth rotation axis, sixth rotation axis, seventh rotation axis, and eighth rotation axis are parallel to one another. 
     Each of the top side rails  1218 ,  1220 ,  1222 ,  1224  and top end rails  1216 ,  1218  are horizontal or substantially horizontally positioned when the foldable playard  1200  is in the use configuration. Further, the top side rails  1218 ,  1220 ,  1222 ,  1224  are vertically or substantially vertically positioned and the top end rails  1216 ,  1218  are horizontal or substantially horizontally positioned when the foldable playard  1200  is in the folded or stored configuration. 
     A first corner post  1204  has a first end coupled to the first top rail coupling housing  1232 A and a second distal end pivotably coupled to a first support foot  1228 A. A second corner post  1206  can have a first end coupled to the second top rail coupling housing  1232 B and a second distal end pivotably coupled to a second support foot  1228 B. A third corner post  1208  can have a first end coupled to the third top rail coupling housing  1234 A and a distal second end pivotably coupled to a third support foot  1230 A. A fourth corner post  1210  can have a first end coupled to the fourth top rail coupling housing and a distal second end pivotably coupled to a fourth support foot  1230 B. 
     Each of the first corner post  1204 , second corner post  1206 , third corner post  1208 , and fourth corner post  1210  can extend vertically or substantially vertically between the respective support foot and the respective top rail coupling housing and can be configured to provide vertical support to the top side rails  1218 ,  1220 ,  1222 ,  1224 , top end rails  1216 ,  1218 , and top rail coupling housings  1232 A,  1232 B,  1234 A,  1234 B. Each of the first corner post  1204 , second corner post  1206 , third corner post  1208 , and fourth corner post  1210  can extend vertically or substantially vertically when the foldable playard  1200  is in the use configuration and when the system  1200  is in the stored or folded configuration. However, as the foldably playard  1200  is being manipulated between the use configuration and the stored or folded configuration, one or more of the corner posts  1204 ,  1206 ,  1208 ,  1210  may be angled from the vertical orientation anywhere in the range of 20-80 degrees. 
     The foldable playard  1200  can also include a bottom rail support system  1212  pivotably coupled to each of the first support foot  1228 A, second support foot  1228 B, third support foot  1230 A, and fourth support foot  1230 B. The bottom rail support system can include multiple bottom support rails. Each bottom support rail can extend horizontally or substantially horizontally from its respective support foot when the foldable playard  1200  is in the use configuration. The bottom rail support system  1212  can also include bottom rail folding hub assembly  1254 , as shown in  FIG. 12B . In one example, the bottom rail folding hub assembly  1254  can be centrally or substantially centrally positioned within the bottom rail support system  1212  and with respect to the corner posts  1204 - 1210 . Each of the bottom support rails can be directly or indirectly pivotably coupled to the bottom rail folding hub  1254 . The bottom rail support system  1212  can also include one or more hub support arms  1244 ,  1246  that extend out from a first end at the bottom rail folding hub  1254  and extend to a second distal end that contacts the floor or other surface that the system  1200  rests upon. The first support foot  1228 A, second support foot  1228 B, third support foot  1230 A, fourth support foot  1230 B, first hub support arm  1244  and second hub support arm  1246  each include a bottom portion that is planar or substantially planar and is designed to contact the floor or other surface that the playard  1200  is placed upon. Further each foot  1228 A,  1228 B,  1230 A,  1230 B can also include vertically extending outer side surface. At least a portion of this side surface can be planar or substantially planar. The planar or substantially planar portion of the vertically extending outer side surface on each foot  1228 A,  1228 B,  1230 A,  1230 B allows the playard  1200  to also rest or otherwise be supported in an upright position by the feet  1228 A,  1228 B,  1230 A,  1230 B when each foot is rotated at or substantially 90 degrees with respect to its corresponding corner post when the playard  1200  is adjusted from a use or unfolded configuration to a folded or stored configuration. 
     The bottom rail folding hub  1254  can also include a pull strap  1255  coupled to the bottom rail folding hub  1255 . The pull strap  1255  can be constructed of a fabric material. In certain example embodiments, the pull strap  1255  can be formed to create a loop that is configured to receive a hand or portion of a hand therethrough to grip the pull strap  1255 . The pull strap  1255  can be positioned along the top side of the bottom rail folding hub. In some example embodiments, the pull strap  1255  can extend through an opening in the soft goods floor panel of the playard  1200 . A user can reach into the cavity defined by the side walls and floor panel of the playard  1200 , grasp the pull strap  1255  and lift the pull strap  1255  vertically to pull the bottom rail folding hub  1254  up vertically to begin the process of changing the playard from the use configuration to the folded configuration. 
     For example, the first support foot  1228 A can include a housing that includes a bottom side configured to rest upon a floor or other surface. On the opposing end from the bottom side, the first corner post  1204  can be pivotably coupled to and extend vertically up from the first support foot  1228 A. For example, the first support foot  1228 A can include a hinge pin and the first corner post  1204  can include a pair of apertures or a channel extending along an axis orthogonal to the longitudinal axis of the first corner post  1204 . The hinge pin can be coupled along distal ends to the first support foot  1228 A and can extend through the channel or apertures near the second end of the first corner post  1204  to provide a ninth axis of rotation about which the first support foot  1228 A can rotate with respect to the first corner post  1204 . 
     The first support foot  1228 A can also be coupled to the first bottom support rail  1236  along a first end of the first bottom support rail  1236 . For example, the first support foot  1228 A can include a coupling device for coupling the first bottom support rail  1236  to the first support foot  1228 A. The second end of the first bottom support rail  1236  can be directly or indirectly pivotably coupled to the bottom rail folding hub  1254 . For example, the bottom rail folding hub  1254  can include a first coupling rod  1250  pivotably coupled to the hub  1254  and extending out horizontally out from the hub  1254  in a first direction from the hub  1254  and a second coupling rod  1252  pivotably coupled to the hub  1254  and extending horizontally out from the hub  1254  in a second direction from the hub  1254  opposite that of the first direction from hub  1254 . For example, the first coupling rod  1250  or the first bottom rail support  1236  and the second bottom rail support  1238  can be coupled to the hub  1254  by one or more hinge pins  1258  or other rotation means to provide a thirteen axis of rotation that is parallel or substantially parallel with the first through twelfth axes of rotation. Further, the second coupling rod  1252  or the third bottom rail support  1240  and the fourth bottom rail support  1242  can be coupled to the hub  1254  by one or more hinge pins  1256  or other rotation means to provide a fourteenth axis of rotation that is parallel or substantially parallel with the first through thirteenth axes of rotation. 
     The first bottom support rail  1236  can be indirectly pivotably coupled to the hub  1254  by being fixedly coupled to the first coupling rod  1250 , which is pivotably coupled to the hub  1254 . In an alternate embodiment, the second end of the first bottom support rail  1236  can be directly pivotably coupled to the hub  1254 . The first bottom support rail  1236  can include three generally straight sections and two curved sections such that a first curved section is positioned between the first generally straight section and the second generally straight section and the second curved section is positioned between the second generally straight section and the third generally straight section to provide the first bottom support rail  1236  with a generally “S” or “Z” shaped profile. 
     The second support foot  1228 B can include a housing that includes a bottom side configured to rest upon a floor or other surface. On the opposing end from the bottom side, the second corner post  1206  can be pivotably coupled to and extend vertically up from the second support foot  1228 B. For example, the second support foot  1228 B can include a hinge pin and the second corner post  1206  can include a pair of apertures or a channel extending along an axis orthogonal to the longitudinal axis of the second corner post  1206 . The hinge pin can be coupled along distal ends to the second support foot  1228 B and can extend through the channel or apertures near the second end of the second corner post  1206  to provide a tenth axis of rotation about which the second support foot  1228 B can rotate with respect to the second corner post  1206 . 
     The second support foot  1228 B can also be coupled to the second bottom support rail  1238  along a first end of the second bottom support rail  1238 . For example, the second support foot  1228 B can include a coupling device for coupling the second bottom support rail  1238  to the second support foot  1228 B. The second end of the second bottom support rail  1238  can be directly or indirectly pivotably coupled to the bottom rail folding hub  1254 . In one example embodiment, the second bottom support rail  1238  can be indirectly pivotably coupled to the hub  1254  by being fixedly coupled to the first coupling rod  1250 , which is pivotably coupled to the hub  1254 . In an alternate embodiment, the second end of the second bottom support rail  1238  can be directly pivotably coupled to the hub  1254 . The second bottom support rail  1238  can include three generally straight sections and two curved sections such that a first curved section is positioned between the first generally straight section and the second generally straight section and the second curved section is positioned between the second generally straight section and the third generally straight section to provide the second bottom support rail  1238  with a generally “S” or “Z” shaped profile. 
     As shown in  FIGS. 12A and 12C , the third support foot  1230 A can include a housing  1270  that includes a bottom side  1271  configured to rest upon a floor or other surface. In one example, the housing  1270  can be made of plastic, metal, or a combination of plastic and metal. The housing  1270  can include a horizontal cavity or channel  1272  for receiving therein a portion of the third bottom support rail  1240 . The housing  1270  can also include a second cavity or channel  1273  for receiving therein a portion of the third corner post  1208 . On the opposing end from the bottom side  1271 , the third corner post  1208  can be pivotably coupled to and extend vertically up from the third support foot  1230 A. For example, the third support foot  1230 A can include a hinge pin  1264  and the third corner post  1208  can include a pair of apertures or a channel extending along an axis orthogonal to the longitudinal axis Y of the third corner post  1208 . The hinge pin  1264  can be coupled adjacent the distal end to the third support foot  1230 A and can extend through the channel or apertures near the second end of the third corner post  1208  to provide an eleventh axis of rotation about which the third support foot  1230 A can rotate with respect to the third corner post  1208 . The hinge pin and coupling of the corner post to the support foot can be substantially the same for the first corner post  1204  and first support foot  1228 A and the second corner post  1206  and second support foot  1228 B. 
     The third corner post  1208  can also include a pulley or other curved surface  1268  positioned along the second end of the third corner post  1208  and disposed within the housing  1270  of the third support foot  1230 A. When a curved surface is employed rather than a pulley, the curvature can be convex with respect to the end of the third corner post  1208  to provide a generally rounded protruding end to the third corner post  1208 . 
     The third support foot  1230 A can also be coupled to the third bottom support rail  1240  along a first end of the third bottom support rail  1240 . In one example, the third bottom support rail  1240  is fixedly coupled to the third support foot  1230 A so that a movement of the third bottom support rail  1240  causes a corresponding movement in the third support foot  1230 A. For example, at least a portion of the third bottom support rail  1240  can be inserted into the cavity  1272  of the housing  1270 . A coupling device  1262  can then be used to fixedly couple the third bottom support rail  1240  to the third support foot  1230 A. The coupling device can be a screw, rivet, pin or similar coupling device. 
     In one example, a first end of a cable or wire  1260  can be coupled to the third bottom support rail  1240  adjacent to the first end of the third bottom support rail  1240 . For example, the third bottom support rail  1240  can include a cable retaining aperture  1266  or eyelet for coupling the cable or wire  1260  to the third bottom support rail  1240 . In an alternate example, the cable or wire  1260  can be coupled to a portion of the fourth support foot  1230 B, which can be adjacent to the fourth bottom support rail  1242 . The cable or wire  1260  can then extend up along the pulley or curved surface  1268  and through a channel  1275  in the third corner post  1208  that extends along the longitudinal axis Y of the third corner post  1208 . The cable or wire  1260  can exit the distal first end of the third corner post  1208  at the third top corner housing  1234 A and can enter and extend along a channel of the top side rail  1224 . The second end of the cable or wire  1260  can be coupled to a portion of the second rail locking mechanism  1226 B as discussed in more detail below. 
     The second end of the third bottom support rail  1240  can be directly or indirectly pivotably coupled to the bottom rail folding hub  1254 . In one example embodiment, the third bottom support rail  1240  can be indirectly pivotably coupled to the hub  1254  by being fixedly coupled to the second coupling rod  1252 , which is pivotably coupled to the hub  1254 . In an alternate embodiment, the second end of the third bottom support rail  1240  can be directly pivotably coupled to the hub  1254 . The third bottom support rail  1240  can include three generally straight sections and two curved sections such that a first curved section is positioned between the first generally straight section and the second generally straight section and the second curved section is positioned between the second generally straight section and the third generally straight section to provide the third bottom support rail  1240  with a generally “S” or “Z” shaped profile. 
     In operation, when the foldable playard  1200  is in the use, unfolded configuration and a user begins to fold the system  1200  by pulling up in the vertical direction on the hub  1254 , the third corner post  1208  can rotate in the direction B with respect to the third support foot  1230 A and the third support foot  1230 A can rotate in the direction A with respect to the third corner post  1208 . The rotation of the third support foot  1230 A with respect to the third corner post  1208  causes tension in the cable or wire  1264  and causes it to move around the outer perimeter of the pulley  1268  or curved outer surface. As the foot  1230 A is rotated further with respect to the third corner post  1208 , the cable or wire  1264  is pulled further in the downward direction through the channel  1275  of the third corner post  1208  and laterally through the channel of the top side rail  1224  to unlatch the rail locking mechanism  1226 B to release the top side rail  1224  and  1222  for rotation with respect to the rail locking mechanism  1226 B and the corresponding third corner post  1208  and first corner post  1204 . Each of the third support foot  1230 A and third corner post  1208  can rotate in opposite directions of A and B respectively when being adjusted from the folded, stored configuration to the use, unfolded configuration. 
     As also seen in  FIGS. 12A-C , the fourth support foot  1230 B can include also include a housing  1270  that includes a bottom side  1271  configured to rest upon a floor or other surface. In one example, the housing  1270  can be made of plastic, metal, or a combination of plastic and metal. The housing  1270  can include a horizontal cavity or channel  1272  for receiving therein a portion of the third bottom support rail  1240 . The housing  1270  can also include a second cavity or channel  1273  for receiving therein a portion of the fourth corner post  1210 . On the opposing end from the bottom side  1271 , the fourth corner post  1210  can be pivotably coupled to and extend vertically up from the fourth support foot  1230 B. For example, the fourth support foot  1230 B can include a hinge pin  1264  and the fourth corner post  1210  can include a pair of apertures or a channel extending along an axis orthogonal to the longitudinal axis Y of the fourth corner post  1210 . The hinge pin  1264  can be coupled adjacent the distal second end to the fourth support foot  1230 B and can extend through the channel or apertures near the second end of the fourth corner post  1210  to provide an twelfth axis of rotation about which the fourth support foot  1230 B can rotate with respect to the fourth corner post  1210 . 
     The fourth corner post  1210  can also include a pulley or other curved surface  1268  positioned along the second end of the fourth corner post  1210  and disposed within the housing  1270  of the fourth support foot  1230 B. When a curved surface is employed rather than a pulley, the curvature can be convex with respect to the end of the fourth corner post  1210  to provide a generally rounded protruding end to the fourth corner post  1210 . 
     The fourth support foot  1230 B can also be coupled to the fourth bottom support rail  1242  along a first end of the fourth bottom support rail  1242 . In one example, the fourth bottom support rail  1242  is fixedly coupled to the fourth support foot  1230 B so that a movement of the fourth bottom support rail  1242  causes a corresponding movement in the fourth support foot  1230 B. For example, at least a portion of the fourth bottom support rail  1242  can be inserted into the cavity  1272  of the housing  1270 . A coupling device  1262  can then be used to fixedly couple the fourth bottom support rail  1242  to the fourth support foot  1230 B. The coupling device can be a screw, rivet, pin or similar coupling device. 
     In one example, a first end of a cable or wire  1260  can be coupled to the fourth bottom support rail  1242  adjacent to the first end of the fourth bottom support rail  1242 . For example, the fourth bottom support rail  1242  can include a cable retaining aperture  1266  or eyelet for coupling the cable or wire  1260  to the fourth bottom support rail  1242 . In an alternate example, the cable or wire  1260  can be coupled to a portion of the fourth support foot  1230 B, which can be adjacent to the fourth bottom support rail  1242 . The cable or wire  1260  can then extend up along the pulley or curved surface  1268  and through a channel  1275  in the fourth corner post  1210  that extends along the longitudinal axis Y of the fourth corner post  1210 . The cable or wire  1260  can exit the distal first end of the fourth corner post  1210  at the fourth top corner housing  1234 B and can enter and extend along a channel of the top side rail  1220 . The second end of the cable or wire  1260  can be coupled to a portion of the first rail locking mechanism  1226 A as discussed in more detail below. 
     The second end of the fourth bottom support rail  1242  can be directly or indirectly pivotably coupled to the bottom rail folding hub  1254 . In one example embodiment, the fourth bottom support rail  1242  can be indirectly pivotably coupled to the hub  1254  by being fixedly coupled to the second coupling rod  1252 , which is pivotably coupled to the hub  1254 . In an alternate embodiment, the second end of the fourth bottom support rail  1242  can be directly pivotably coupled to the hub  1254 . 
     The fourth bottom support rail  1242  can include three generally straight sections and two curved sections such that a first curved section is positioned between the first generally straight section and the second generally straight section and the second curved section is positioned between the second generally straight section and the third generally straight section to provide the fourth bottom support rail  1242  with a generally “S” or “Z” shaped profile. 
     In operation, when the foldable playard  1200  is in the use, unfolded configuration and a user begins to fold the system  1200  by pulling up in the vertical direction on the hub  1254 , the fourth corner post  1210  can rotate in the direction B with respect to the fourth support foot  1230 B and the fourth support foot  1230 B can rotate in the direction A with respect to the fourth corner post  1210 . The rotation of the fourth support foot  1230 B with respect to the fourth corner post  1210  causes tension in the cable or wire  1264  and causes it to move around the outer perimeter of the pulley  1268  or curved outer surface. As the foot  1230 B is rotated further with respect to the fourth corner post  1210 , the cable or wire  1264  is pulled further in the downward direction through the channel  1275  of the fourth corner post  1210  and laterally through the channel of the top side rail  1220  to unlatch the rail locking mechanism  1226 A to release the top side rail  1220  and  1218  for rotation with respect to the rail locking mechanism  1226 A and the corresponding fourth corner post  1210  and second corner post  1206 . Each of the fourth support foot  1230 B and fourth corner post  1210  can rotate in opposite directions of A and B respectively when being adjusted from the folded, stored configuration to the use, unfolded configuration. 
       FIG. 12D  is an elevation view of the rail locking mechanisms  1226 A and  1226 B for the foldable playard  1200  according to one example embodiment of the disclosure. Now referring to  FIGS. 12A-D , the rail locking mechanism  1226 A,  1226 B will be described with reference to mechanism  1226 A and top side rails  1218  and  1220 . However, it is understood that the playard  1200  includes another rail locking mechanism  1226 B that interacts with top side rails  1222  and  1224  in a manner substantially the same as will be described with reference to  1222 ,  1224 , and  1226 B. 
     As shown in  FIG. 12D , the top side rail  1220  can include a first rivet, pin, post, or cam follower  1294  (hereinafter collectively referred to as a rivet  1294 ) and a second rivet, pin, post, or cam follower  1288  (hereinafter collectively referred to as a rivet  1288 ). The top side rail  1218  can include a first rivet, pin, post, or cam follower  1296  (hereinafter collectively referred to as a rivet  1296 ) and a second rivet, pin, post, or cam follower  1290  (hereinafter collectively referred to as a rivet  1290 ). Each of the rivets  1288 ,  1290 ,  1294 ,  1296  can extend through the body of the respective top side rail  1218 ,  1220  in a direction orthogonal or substantially orthogonal to the longitudinal axis of the respective top side rail  1218 ,  1220 . 
     Each of the ends of the top side rails  1218 ,  1220  can include a slotted opening disposed through a portion of the end of the respective top side rail  1218 ,  1220  and extending along the longitudinal axis of the respective top side rail  1218 ,  1220 . The rail locking mechanism  1226 A can also include a slide plate  1274  that can be at least partially disposed within the respective slotted openings of each of the top side rails  1218 ,  1220 . The slide plate  1274  can include a first enclosed slot  1284  for receiving the first rivet  1294  of the top side rail  1220  and a second enclosed slot  1286  for receiving the first rivet  1296  of the top side rail  1220 . Each of the first enclosed slot  1284  and second enclosed slot  1286  can extend generally in the longitudinal direction of the top side rails  1220 ,  1218  when the playard  1200  is in the use configuration. Each of the first enclosed slot  1284  and the second enclosed slot  1286  are configured to maintain each of the top side rail  1220  and top side rail  1218  in slidable connection with the rail locking mechanism  1226 A. 
     The rail locking mechanism  1226 A can also include a first locking slot  1280  and a second locking slot  1282 . The first locking slot  1280  can be configured to receive the second rivet  1288  of the top side rail  1220 . The first locking slot  1280  can include an opening along a portion of the bottom end of the first locking slot  1280  that leads into a rivet cam or pathway  1276  that the second rivet  1288  follows when the rail locking mechanism  1226 A is in the unlocked position and when the playard  1200  is being adjusted from the use configuration to the folded configuration, as shown in  FIGS. 13A-13E . In one example, the rivet path  1276  is curved. 
     The second locking slot  1282  can be configured to receive the second rivet  1290  of the top side rail  1218 . The second locking slot  1282  can include an opening along a portion of the bottom end of the second locking slot  1282  that leads into a rivet cam or pathway  1278  that the second rivet  1290  follows when the rail locking mechanism  1226 A is in the unlocked position and when the playard  1200  is being adjusted from the use configuration to the folded configuration, as shown in  FIGS. 13A-13E . In one example, the rivet path  1278  for the rivet  1290  is curved in a direction opposite the rivet path  1276  for the second rivet  1288 . 
     The rail locking mechanism  1226 A can also include a cable attachment aperture  1292  for attaching a cable  1260  thereto. The cable can extend through an internal passageway of the top side rail  1220  and another cable can also extend through the internal passageway of the top side rail  1224  from the corresponding cable attachments  1292  of the rail locking mechanisms  1226 A,  1226 B down through the channel  1275  of the corresponding fourth corner post  1210  or third corner post  1208  to the cable retaining aperture  1266  of  FIG. 12C , described above. As discussed above, the rotation of the foot with respect to the corner post can cause tension in the corresponding cables  1260  that pulls the corresponding rail locking mechanisms  1226 A,  1226 B in the direction C from a locked position to an unlocked position. In the unlocked position, the second rivets  1288 ,  1290  can pass through the corresponding opening in the bottom of each of the respective first locking slot  1280  and second locking slot  1282 . Once the second rivets  1288 ,  1290  pass through the corresponding opening, each second rivet  1288 ,  1290  can continue to move along the corresponding rivet paths  1276 ,  1278  as the corresponding top side rail  1220 ,  1218  rotates from a generally horizontal position to a vertical or substantially vertical position as the playard  1200  is adjusted into the folded configuration, as shown in  FIG. 13D . For example, the top side rail  1220  can rotate in the direction D about a rotation axis defined by the first rivet  1294  with respect to the rail locking mechanism  1226 A and the top side rail  1218  can rotate in the direction E about a rotation axis defined by the first rivet  1296  with respect to the rail locking mechanism  1226 A. 
     Each rail locking mechanism  1226 A can also include a spring biasing mechanism (not shown) coupled to the slide plate  1274 . The spring biasing mechanism can bias the slide plate  1274  into the locked position (as shown in  FIG. 12D ). The rail locking mechanism  1226 A can also include a top cover plate or saddle (not shown) that is disposed over at least a portion of the top surface of the corresponding rail locking mechanism  1226 A,  1226 B. The saddle can be configured to limit access to the portion of the mechanism  1226 A where the ends of the top side rails  1218 ,  1220  abut in the use configuration and create a potential pinch point. Similarly, the rail locking mechanism  1226 A can also include a pair of side plates (not shown), each disposed on at least a portion of the opposing lateral sides of the top side rails  1220 ,  1218 . In one example embodiment, the side plates can be movably coupled to the top side rail  1220  via the first rivet  1294  and to the top side rail  1218  via the first rivet  1296 . 
       FIGS. 13A-D  are various views of a method for adjusting the foldable child containment system  1200  of  FIGS. 12A-D  from a use or unfolded configuration to a folded or stored configuration, according to one example embodiment of the disclosure. Referring now to  FIGS. 12A-13E , as best shown in  FIG. 13A , the user can grasp the pull handle  1255  coupled to the hub  1254  and can lift the hub upward vertically. As the hub  1254  moves upward vertically, it causes the ends of the first bottom rail  1236 , second bottom rail  1238 , third bottom rail  1240 , and fourth bottom rail  1242  directly or indirectly coupled to the hub  1254  to move in a generally upward direction. The movement of the ends of first bottom rail  1236 , second bottom rail  1238 , third bottom rail  1240 , and fourth bottom rail  1242  directly or indirectly coupled to the hub  1254  in the generally upward direction, cause the opposing ends of each of the first bottom rail  1236 , second bottom rail  1238 , third bottom rail  1240 , and fourth bottom rail  1242  coupled to the respective feet  1228 A,  1228 B,  1230 A,  1230 B to cause those feet  1228 A,  1228 B,  1230 A,  1230 B to rotate with the opposing ends and in relation to the corresponding first corner post  1204 , second corner post  1206 , third corner post  1208 , and fourth corner post  1210  in the direction of the arrows shown in  FIG. 13A . 
       FIG. 13B  shows the hub  1254  having been moved further vertically upward and away from the floor surface. The feet  1228 A,  1228 B,  1230 A,  1230 B have rotated further with regard to the corresponding first corner post  1204 , second corner post  1206 , third corner post  1208 , and fourth corner post  1210 . The rotation of the feet  1230 A and  1230 B, create a tension in the corresponding cables  1260  attached to each of the corresponding third corner post  1208  and fourth corner post  1210  or the corresponding foot  1230 A and foot  1230 B, as shown in  FIG. 12C . This tension and rotation of the foot with respect to the corner post causes the cable  1260  to move about the pulley  1268  or curved bottom end of the corresponding corner post  1208 ,  1210 . As the foot  1230 A,  1230 B is rotated further with respect to the corresponding corner post  1208 ,  1210  the cable or wire  1264  is pulled further in the downward direction through the channel  1275  of the corresponding corner post  1208 ,  1210  and laterally through the channel of the corresponding top side rail  1224 ,  1220 . The lateral movement of the cable or wire  1264  through the channel of the corresponding top side rail  1220 ,  1224  at a force greater than the force of the spring biasing mechanism on the rail locking mechanism pulls the slide plate  1274  of the corresponding rail locking mechanism  1226 B,  1226 A in the direction C to unlatch the rail locking mechanisms  1226 B,  1226 A to release the top side rails  1224 ,  1222  and  1218 ,  1220  for rotation with respect to the corresponding rail locking mechanism  1226 B,  1226 A and the corresponding corner posts, as shown in  FIG. 12D . 
     Pulling the corresponding rail locking mechanisms  1226 A,  1226 B in the direction C adjusts the mechanism from a locked position to an unlocked position. In the unlocked position, the second rivets  1288 ,  1290  can pass through the corresponding opening in the bottom of each of the respective first locking slot  1280  and second locking slot  1282 . Once the second rivets  1288 ,  1290  pass through the corresponding opening, each second rivet  1288 ,  1290  can continue to move along the corresponding rivet paths  1276 ,  1278  as the corresponding top side rail  1220 ,  1218  rotates from a generally horizontal position to a vertical or substantially vertical position as the playard  1200  is adjusted into the folded configuration, as shown in  FIGS. 13C-D .  FIG. 13D  shows a side view of the playard  1200  in the folded configuration and  FIG. 13E  shows an end view of the playard  1200  in the folded configuration. As shown in  FIGS. 13D-E , each of the top side rails  1218 ,  1220 ,  1222 , and  1224 , have rotated from a substantially horizontal position in the use configuration to a substantially vertical position in the folded configuration. Similarly, each of the first bottom rail  1236 , second bottom rail  1238 , third bottom rail  1240 , and fourth bottom rail  1242  have rotated from a substantially horizontal position in the use configuration to a substantially vertical position in the folded configuration. The top end rail  1214  and top end rail  1216  have remained in the substantially horizontal position in the use configuration, the folded configuration and while the playard  1200  was being adjusted from the use configuration to the folded configuration. Further, in the folded or stored configuration, the playard  1200  is capable of remaining standing in the upright position on the rotated feet  1228 A,  1228 B,  1230 A,  1230 B. 
     Though the disclosed example includes a particular arrangement of a number of parts, components, features, and aspects, the disclosure is not limited to only that example or arrangement. Any one or more of the parts, components, features, and aspects of the disclosure can be employed alone or in other arrangements of any two or more of the same. 
     Although certain playard features, functions, components, and parts have been described herein in accordance with the teachings of the present disclosure, the scope of coverage of this patent is not limited thereto. On the contrary, this patent covers all embodiments of the teachings of the disclosure that fairly fall within the scope of permissible equivalents. 
     Conditional language, such as, among others, “can,” “could,” “might,” or “may,” unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain implementations could include, while other implementations do not include, certain features, elements, and/or operations. Thus, such conditional language generally is not intended to imply that features, elements, and/or operations are in any way required for one or more implementations or that one or more implementations necessarily include logic for deciding, with or without user input or prompting, whether these features, elements, and/or operations are included or are to be performed in any particular implementation. 
     Many modifications and other implementations of the disclosure set forth herein will be apparent having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the disclosure is not to be limited to the specific implementations disclosed and that modifications and other implementations are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.