Patent Publication Number: US-2007096436-A1

Title: Mobile support assembly

Description:
CLAIM OF PRIORITY  
      The present application is a Continuation-In-Part application of previously filed, now pending application having Serial No. 11/343,299 which was filed on Jan. 31, 2006, which is a Continuation-In-Part of U.S. patent application having Ser. No. 10/680,596 filed Oct. 7, 2003, which has matured into U.S. Pat. No. 7,073,801 on Jul. 11, 2006, which claims priority to U.S. patent application having Ser. No. 11/129,569 filed May 13, 2005, which has matured into U.S. Pat. No. 7,066,484 on Jun. 27, 2006, wherein all of the above are incorporated herein in their entirety by reference. 
    
    
     BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      This invention is directed to a mobile support assembly which in its various embodiments is structured to be used as a walker/wheelchair combination or as a walker with a seat structure The various preferred embodiments of the mobile support assembly facilitate the selective and relative disposition of the various components thereof into a stored orientation for storage, transport, shipment, etc. when not in use or in an operative orientation for use. Certain of the structural components of the embodiments may be selectively disposed to otherwise vary the dimension and/or configuration when in the stored or operative orientations.  
      2. Description of the Related Art  
      Numerous individuals suffer from a lack of mobility because of age, medical conditions or the like. As a result, such individuals frequently require some type of mechanical aid or device in order to facilitate their ability to move from one location to the next. Known devices which are readily available on the commercial market include “walker” assemblies which typically allow an individual to support oneself in an upright, substantially stable orientation while standing or walking. For the less infirmed, known walker assemblies allow the individual to safely traverse over both interior and exterior support surfaces, such as floors, sidewalks, streets, etc. Also, conventionally structured walkers may or may not include supporting wheel assemblies. When such wheel assemblies are present they may facilitate the mobility of a user. However, the presence of such wheel assemblies, depending on their structural features and also on whether or not there is safety measures associated therewith, may lessen the stability of the walker. This is especially true when all four legs of the walker frame include a wheel, roller or like structure attached to the lower end thereof.  
      The advantage of known walker assemblies, over other mobility aids, include a smaller frame of generally lightweight construction which may be more easily stored or transport than other devices when not in use. In order to further facilitate the storage or transport thereof, some known or conventional walkers are foldable, allowing them to be easily disposed within the trunk or other convenient or appropriate area of the vehicle. However, the collapsibility of conventional walkers may be limited in that the walker still must offer sufficient structural integrity as well as provide adequate stability and support to an individual when in use.  
      Yet another category of devices used to facilitate the mobility of individuals that may have more significant physical limitations include mobile chair structures or “wheelchairs”. An increased use of the wheelchair has occurred in recent years, due at least in part, to an increasingly aging population. As such, the development of the wheelchair, in various forms, has progressed from the smaller, less bulky wheelchair structures of somewhat lightweight construction to the heavier, larger chair assemblies. In addition, more sophisticated wheelchair designs are motorized and while more expensive, they are still relatively common. Clearly, the larger more complex and/or motorized wheelchair assemblies have distinct advantages in terms of facilitating mobility without requiring significant manual exertion by the user. In addition, control assemblies associated with the steering and operation of the more sophisticated motorized wheelchair structures are capable of allowing the substantially independent use thereof by individuals who are significantly disabled and are almost totally paralyzed.  
      Despite the advantages of the type set forth above, the larger more sophisticated wheelchair structures do have certain disadvantages relating to the storage and transport thereof when not in use. In order to overcome such disadvantages collapsible wheelchairs have been developed which are easier to handle, transport and store when not in use. However, many collapsible wheelchair structures still assume a bulky configuration even when in a folded orientation, thereby requiring a significant amount of space when stored or loaded into the trunk or other appropriate location of a vehicle. Moreover, even when intentionally disposed in a collapsed or folded orientation, one or more dimensions of the wheelchair, such as the longitudinal or transverse dimension, is oftentimes not sufficiently reduced to significantly facilitate the storage or transport thereof.  
      Mobile support structures including both walkers and wheelchairs have independently developed to a point where their use is more efficient and reliable. However, there appears to be an absence of a combined structure having multi-use capabilities such that a single mobile support assembly may be utilized as both a walker and a wheelchair by assuming different orientations of the structural components of which such an assembly is comprised. Accordingly, despite the developments and advancements in mobility aiding devices of the type set forth above, there is still a need for an improved mobile support assembly which provides significant support and stability, whether used as a walker and/or a wheelchair. A proposed mobility aid structured to satisfy such need should be capable of being easily and quickly configured into an operative position for use and possibly into a collapsed position for storage. Further, a proposed multi-use mobile support assembly should have its various structural components cooperatively configured, disposed and structured such that selective positioning thereof into a plurality of different orientations is easily accomplished. As such, the mobile support assembly may be converted for use as a walker or a wheelchair assembly. In addition, such a proposed multi-use mobile support assembly could also have additional, supplementary features such that when the support assembly is in a walker configuration it is also structured to allow at least temporary support of a user in a seated orientation, wherein the user may require temporary, short term rest periods while not requiring the use of a wheelchair, per se. If developed, such a proposed, multi-use mobile support assembly should comprise a frame, as well as other operative components which are cooperatively structured and relatively operable to allow selective use of the support assembly as either a walker or a wheelchair assembly.  
     SUMMARY OF THE INVENTION  
      In at least one of a plurality of preferred embodiments a foldable walker provides an apparatus for assisting a user with mobility. The foldable walker comprises a frame selectively positionable between an operative orientation and a stored orientation. The frame of the walker assembly is at least partially defined by a front leg assembly, including at least a first front leg, and rear leg assembly, including at least a first rear leg connected to the first front leg. The first rear leg includes an upper member having a first end and a second end and a lower member having a first end and a second end. The first end of the upper member is pivotally connected the first end of the lower member, and the lower member is preferably pivotal between an extended use position and a folded storage position.  
      Another preferred embodiment comprises a foldable walker including the front leg assembly having a first front leg, a second front leg, and a first cross-member. Each of the first and second front legs includes a first end and a second end, and the first cross-member connects the first and second front legs. Similarly, the rear leg assembly comprises a first rear leg and a second rear leg. The first rear leg is connected to the first front leg, and the first rear leg includes an upper member having a first end and a second end, and a lower member having a first end and a second end, and a hinge connecting the first end of the upper member to the first end of the lower member. The second rear leg is connected to the second front leg, and the second rear leg includes an upper member having a first end and a second end, a lower member has a first end and a second end, and a hinge connecting the first end of the upper member to the first end of the lower member. The lower members of the first and second rear legs are preferably pivotal between an extended use position and a folded storage position.  
      In addition, yet another preferred embodiment of the present invention comprises the walker assembly including a front wheel assembly connected to the front leg assembly and a rear wheel assembly connected to the rear leg assembly. Additional structural features associated with the front and rear wheel assemblies are their ability to be selectively disposed in a position which reduces at least the longitudinal dimension and overall configuration of the walker assembly when in a stored orientation. More specifically, the various embodiments of a walker assembly of the present invention include the front wheel assembly being removably secured to the front leg assembly. Similarly, the rear wheel assembly can be connected to at least a portion of the rear wheel assembly such that it is movable therewith into and out of a folded storage position. Alternatively, the rear wheel assembly may be disconnected from the rear leg assembly. In either structural variation the configuration and at least the longitudinal dimension of the frame of the walker assembly is further reduced in order to facilitate storage and transport of the walker assembly.  
      When in the stored orientation, the frame of the walker assembly is disposed so as to substantially align the front and rear leg assemblies in adjacent relation to one another along the length of the frame. As such the transverse dimension and overall configuration of the walker assembly is substantially reduced thereby further facilitating the storage and transport of the walker assembly.  
      Yet additional structural features include a handle assembly which may be adjustably and/or removably secured to the frame of one or more embodiments of the walker assembly. Moreover, a seat is movably connected to the frame and may be associated with a storage compartment. As such, the seat may be selectively disposed in a position such that it supports the user of the walker assembly. When in such a supporting position, the seat overlies and at least partially covers an access opening of a storage compartment. Other associated structural features may include a backrest disposed and structured to support the back of a user when supported in a seated position on the seat of the walker assembly. The structural features of the seat, storage compartment and backrest are such as to further facilitate the compact reduction in configuration and dimension of the walker assembly when disposed in the aforementioned stored orientation so as to facilitate storage and/or transport of the walker assembly, as desired.  
      Yet another preferred embodiment of the present invention comprises a mobile support assembly which is structured to have multi-use capabilities and which is also capable of being selectively disposed between operative and stored orientations, as with the above described embodiments. More specifically, the mobile support assembly of this preferred embodiment is capable of being selectively used as either a walker or a wheelchair dependent on the orientation of the frame and/or one or more components associated with the frame. Moreover, the frame comprises at least one adjustable portion or adjustable frame segment which is partially rotatable or pivotal relative to a remainder of the frame. Therefore, the frame generally and the adjustable portion or adjustable frame segment specifically can be selectively disposed in either a first orientation or a second orientation. The disposition of the frame and/or adjustable frame segment in the first orientation enables the use of the mobile support assembly as a walker, wherein the disposition of the frame and/or adjustable portion or frame segment in the second orientation enables the use of the mobile support assembly as a wheelchair.  
      Additional structural and operative features of this preferred embodiment of the mobile support assembly comprise the frame also including two side frame segments which are at least partially configured, structured and disposed to define a portion of a chair assembly. The chair assembly comprises the main support for an individual disposed in a seated orientation, when the mobile support assembly is in the second orientation and is used as a wheelchair. Further, the chair assembly comprises a seat and a back support which are disposed and structured to provide the proper support and at least a certain degree of comfort to a seated individual. The mobility of the support assembly of this preferred embodiment present is facilitated by the frame including a front leg assembly and a rear leg assembly each of which is connected to a wheel assembly. The wheel assembly comprises a plurality of wheels equal in number to the number of legs which comprise the front and rear wheel assemblies. Therefore, the wheel assembly movably supports the mobile support assembly, when utilized as either a walker or a wheelchair, over any of a variety of different ground or other support surfaces.  
      The frame also includes a handle assembly which along with the rear leg assembly at least partially defines a trailing portion of the frame. For purposes of clarity, the front leg assembly is considered to define a leading portion of the frame, wherein the terms “leading” and “trailing” are used with reference to the normal, forward direction of the mobile support assembly, when used as either a walker or wheelchair. In addition, the rear leg and the handle assembly are cooperatively disposed and configured to facilitate an individual being disposed adjacent the trailing portion of the frame in an orientation which facilitates the application of a pushing, pulling or other propelling force to the mobile support assembly, whether it is used as a walker or a wheelchair.  
      Other structural and operative features of the mobile support assembly, especially when in the aforementioned first orientation, is the disposition of the adjustable portion or frame segment in substantially overlying relation to a seat of the chair assembly such that access to the chair assembly is restricted. Such overlying relation of the adjustable frame segment may be more specifically described as the adjustable frame segment being disposed above and in spaced relation to the seat and angularly oriented inwardly from the handle assembly towards a leading portion of the frame and away from the trailing portion of the mobile support assembly.  
      Positioning of the adjustable frame segment in this first orientation also serves to open or make readily accessible a space between the two handles of the aforementioned handle assembly. Moreover, the back support of the chair assembly is pivotal or otherwise movable so as to be disposed in overlying, confronting engagement with the seat of the chair assembly. As such, the back support may be used as a rest area or support enabling an individual to sit thereon when the mobile support assembly is in the first orientation and utilized as a walker. Therefore, the open spacing between the handles of the handle assembly and the inwardly, angular orientation of the adjustable frame segment further facilitates orientation of an individual in a seated position facing to the rear upon the normal forward direction of travel of the mobile support assembly when used as either a walker or a wheelchair.  
      The structural and functional versatility of the frame, specifically including the adjustable portion or frame segment is further demonstrated by its selective disposition in the second orientation. When so positioned, the adjustable frame segment is substantially aligned with the handle assembly so as to at least partially define the trailing portion of the mobile support assembly. When in the second orientation, the adjustable support segment further serves to at least partially support or at least assume an aligned relation with the back support of the chair assembly. As should be apparent, when the adjustable portion or frame segment is in the second orientation, for use of the mobile support assembly as a wheelchair, the back support is disposed in an upright orientation connected to, supported by or otherwise cooperatively aligned with the adjustable frame segment, such that access to the chair assembly is facilitated.  
      The mobile support assembly of this preferred embodiment of the present invention may have similar structural and operative features as the previously described preferred embodiments. More specifically, added versatility of the mobile support assembly is enhanced by the aforementioned handle assembly being adjustably and removably connected to a remainder of the frame. As such, the height of the handle assembly may be selectively adjusted to accommodate different individuals or it may be removed to facilitate storage, regardless of the mobile support assembly being used as a walker or wheelchair. Also, hand operated brakes may be mounted on or connected to the handle assembly so as to be readily accessible from the hand grips or handlebar of each of the handles. Operative interconnection between the hand applied brake members and the wheel assembly is accomplished by appropriate mechanical linkage, such as a cable or the like.  
      Yet another preferred embodiment of the present invention comprises a mobile support assembly primarily in the form of a walker assembly which, as with previously described embodiments, includes a frame structured to facilitate stable travel of an individual over a variety of different surfaces. In addition, the frame includes a front leg assembly and a rear leg assembly each preferably including two spaced apart legs. The front and rear leg assemblies are moveably interconnected to one another such that the frame may be selectively disposed into either an operative orientation or a stored orientation. When in the operative orientation, the front and rear leg assemblies are positioned to facilitate stable support and/or travel of an individual on and over a variety of different surfaces.  
      When in the stored orientation, the front and rear leg assemblies are folded or otherwise relatively disposed so as to be at least partially aligned or coextensive. Therefore the stored orientation allows the frame to assume at least a reduced transverse dimension. Moreover, the stored orientation may also facilitate the frame assuming a reduced longitudinal dimension by a selected adjustment of the one or more wheel assemblies relative to the leg assemblies to which they are connected. In addition, the stored orientation of the frame may also be at least partially defined by an at least partial detachment of one or more of the wheel assemblies from their corresponding leg assemblies to further accomplish a reduced longitudinal dimension of the frame.  
      One feature of this preferred embodiment of the mobile support assembly, being in the form of a walker, comprises the ability to efficiently vary the height of the frame so as to accommodate the users of various sizes. Further, the adjustment or varying of the height of the frame accommodates users when the mobile support assembly is used as a walker and/or when a seat portion associated with the walker is occupied by the user. Effective height adjustment of the frame is more specifically accomplished by an adjustable connection of the wheel assemblies to preferably both the front and rear leg assemblies of the frame.  
      More specifically, both the front and rear wheel assemblies may be adjusted to extend axially outward from the respective and correspondingly front and rear leg assemblies as they are adjustably connected to the lower portions thereof. Therefore, when the frame is in an operative position and positioned on any of a number of supporting surfaces, the height thereof may be adjusted by varying the outer extension of the front and rear wheel assemblies relative to corresponding ones of the front and rear leg assemblies. The adjustable connection between the wheel assemblies and corresponding ones of the leg assemblies is such as to facilitate the selective positioning of the wheel assemblies in a quick and easy manner to accommodate individual users of different heights, as set forth in greater detail hereinafter.  
      Additional features of this preferred embodiment of the mobile support assembly, is the provision of at least one, but more practically two bracket assemblies each extending in interconnecting, movable relation between the front and rear leg assemblies. Moreover, each of the one or more bracket assemblies comprise at least two bracket segments pivotally or otherwise movable relative to one another into and out of a folded position. Therefore, the front and rear leg assemblies may be disposed in either of the aforementioned operative or stored orientations.  
      Further, a lock assembly is associated with at least one of the bracket assemblies and is structured to removably retain or “lock” the corresponding bracket segments into the folded position. As such, the front and rear leg assemblies are prevented from inadvertently being released from the stored orientation until the lock assembly is purposely released. Manipulated of the lock assembly will permit a separation of the bracket segments from their folded position into their interconnecting, somewhat linearly configured orientation, wherein the frame is in the aforementioned operative orientation.  
      Additional structural modifications of this preferred embodiment, which may be used with additional embodiments of the present invention as described herein relate to a retaining connector or bracket. More specifically, a modified retaining connector comprises a central connecting pin disposed inwardly from two curved arms and connected thereto. Further, the curved arms are pivotally or hingedly connected to one another so as to substantially open the interior of the retaining connector thereby facilitating connection or disconnection from a leg of the frame. In addition, the curved arms have a collective longitudinal dimension sufficient to facilitate interlocking but removable connection of the free ends thereof. As such, the pivotally connected curved arms may surround the leg portion on which the retaining connector is mounted while substantially enclosing connecting pin on the interior thereof.  
      In use, the connecting pin and pivotally connected arms of the retaining connector are disposed to retain and removably secure the front and rear wheel assemblies into the lower portions of the legs of the respective front and rear leg assemblies. In such a retaining position, inadvertent removal of the retaining connectors are prevented, thereby assuring that the interconnection between the wheel assemblies and the corresponding leg assemblies, as well as the intended or preferred height of the frame relative to the supporting surface, will be maintained.  
      These and other objects, features and advantages of the present invention will become clearer when the drawings as well as the detailed description are taken into consideration. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
      For a fuller understanding of the nature of the present invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:  
       FIG. 1  is a front perspective view of an embodiment, among others, of a foldable walker in an operative position.  
       FIG. 2  is a rear perspective view of the foldable walker as shown in  FIG. 1 .  
       FIG. 3  is a side view of the foldable walker shown in  FIG. 1 .  
       FIGS. 4   a  and  4   b  are front and side views of an upper portion of an embodiment of a hinge assembly as used on the foldable walker shown in  FIG. 1 .  
       FIGS. 5   a  and  5   b  are front and side views of a lower portion of an embodiment of a hinge assembly as used on the foldable walker shown in  FIG. 1 .  
       FIGS. 6   a - 6   d  are partial, cut-away side views of an embodiment of a hinge assembly, including upper and lower portions as shown in  FIGS. 4   a - 4   b  and  5   a - 5   b , respectively, as used with the foldable walker shown in  FIG. 1 .  
       FIG. 7  is a rear perspective view of the foldable walker shown in  FIG. 1 , when partially folded as it is being disposed into a stored orientation.  
       FIG. 8  is a rear perspective view of the foldable walker shown in  FIG. 1 , when fully folded and in the stored orientation.  
       FIG. 9  is a top plan view of a retaining connector used in at least one preferred embodiment of the present invention to retain a wheel assembly in connected relation to a corresponding leg assembly.  
       FIG. 10  is a front view in partial cutaway of corresponding connecting portions of the front and/or rear leg assemblies with the front and/or rear wheel assemblies.  
       FIG. 11  is a side view in partial cutaway of the embodiment of  FIG. 10 .  
       FIG. 12  is a front view in partial cutaway of the embodiments of  FIGS. 10 and 11  in a connected or assembled position.  
       FIG. 13  is a front view in partial cutaway of the embodiment of  FIG. 12  with the retaining connector, represented in  FIG. 9 , disposed in a retaining position relative to the correspondingly connected leg and wheel assemblies.  
       FIG. 14  is a sectional view along line  14 - 14  of  FIG. 13 .  
       FIG. 15  is a front perspective view of yet another preferred embodiment of the present invention directed to a multi-use mobile support assembly capable of being used as either a walker or a wheelchair.  
       FIG. 16  is a side perspective view of the embodiment of  FIG. 1 , wherein the mobile support assembly has assumed a first orientation enabling its use as a walker.  
       FIG. 17  is a rear perspective view of the embodiment of  FIG. 16 .  
       FIG. 18  is a detailed view in partial cutaway of portions of a wheel assembly associated with the mobile support assembly and a foot pedal or support which may be associated therewith.  
       FIG. 19  is a detailed view in partial cutaway of one handle of an adjustable handle assembly, the position of which may be selectively varied.  
       FIG. 20  is a perspective view of yet another preferred embodiment of the present invention structured to efficiently assume a compact orientation of significantly reduced size so as to facilitate storage and/or transport.  
       FIG. 21  is a perspective view in detail of an armrest associated with the preferred embodiment of  FIG. 20  as well as other embodiments described hereinafter.  
       FIG. 22  is a detailed view in partial cutaway of the embodiment of  FIG. 20 , wherein certain structural components thereof are disposed in a collapsed and compact orientation.  
       FIG. 23  is a detailed view in partial cutaway of a connector associated with the collapsible nature of the embodiment of  FIG. 22 .  
       FIG. 24  is a perspective view in detail of one of two side frame segments connected to the handle assembly and an armrest of the embodiment of  FIG. 20 .  
       FIG. 25  is a perspective view of yet another preferred embodiment of the mobile support assembly of the present invention, in the form of a walker and including a frame and associated components, absent the attachment of normally included wheel assemblies.  
       FIG. 26  is a rear perspective view of the embodiment of  FIG. 25 .  
       FIG. 27  is a side view of the embodiment of  FIGS. 25 and 26 .  
       FIG. 28  is a perspective view in partial cutaway of portions of both front and rear leg assemblies of the embodiments of  FIGS. 25 through 27  with corresponding wheel assemblies in a position to be mounted thereon.  
       FIG. 29  is a top sectional view of another embodiment of a retaining connector similar to but distinguishable from the embodiment of  FIGS. 13 and 14 .  
       FIG. 30  is a front view in partial cutaway of corresponding connecting portions of the front and/or rear leg assemblies with the front and/or rear wheel assemblies of the embodiment of  FIGS. 25 through 28 .  
       FIG. 31  is a side view in partial cutaway of the embodiment of  FIG. 30 .  
       FIG. 32  is a front view in partial cutaway of the embodiment of  FIGS. 30 and 31  in a connected or assembled position.  
       FIG. 33  is a side view in partial cutaway of a bracket assembly associated with the front and rear leg assemblies of the embodiment of  FIGS. 25 through 29 , when the support assembly is in an operative orientation.  
       FIG. 34  is a top end view of the embodiment of  FIG. 33  when in the bracket assembly is in a folded position so as to dispose the support assembly of the embodiment of  FIGS. 25 through 29  in a stored orientation.  
      Like reference numerals refer to like parts throughout the several views of the drawings. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
      Referring now in more detail to the drawings,  FIGS. 1-3  illustrate an embodiment of a foldable walker  100  in an operative orientation. As shown, the foldable walker  100  comprises a frame at least partially defined by a front leg assembly and a rear leg assembly. More specifically, the front leg assembly comprises a first front leg  110   a  and a second front leg  110   b  secured to each other by at least a first cross member  128 . The first front leg  110   a  and a second front leg  110   b  are each pivotally connected to the rear leg assembly, which comprises a first rear leg  120   a  and a second rear leg  120   b , respectively. The first and second rear legs  120   a ,  120   b  each include an upper member or portion  122   a ,  122   b , which in at least one preferred embodiment, are hingedly attached to a respective lower member or portion  130   a ,  130   b  by hinge assemblies  150   a ,  150   b , respectively, as is discussed in greater detail hereinafter. Preferably, the first upper member  122   a  and a second upper member  122   b  are connected by a second cross member  136  which is positioned so as to be the same height above a support surface beneath the foldable walker  100  as the first cross member  128 . Additional cross members, such as cross member  129 , may (though not necessarily in all embodiments) be provided between the first and second front legs  110   a ,  110   b  and the first and second upper members  122   a ,  122   b  to provide additional stability to the foldable walker  100 . Preferably, the first cross member  128 , the second cross member  136 , and cross member  129  are welded to brackets  127  which are in turn welded to their respective legs of the foldable walker  100 . Of course, other connection structures are also considered to be within the scope of the present invention. Further, the first and second front legs  110   a ,  110   b  are preferably connected to the first and second upper members  122   a ,  122   b , respectively, by folding brackets  116   a  and  116   b . The first and second folding brackets  116   a ,  116   b  are preferably connected to each other with a tie rod  118  and are configured such that the folding brackets  116   a ,  116   b  only collapse when the tie rod  118  is pushed upwardly away from the support surface beneath the foldable walker  100 .  
      A previously noted, and as best shown in  FIG. 2 , the first and second upper members or portions  122   a ,  122   b  are hingably connected to the first and second lower members or portions  130   a ,  130   b  by first and second hinge assemblies  150   a ,  150   b , respectively. For purposes of clarity, only the first rear leg  120   a  will be described, it being understood that the second rear leg  120   b  has equivalent structural and operative features. As shown, the second end  126   a  of the first upper member  122   a  is preferably rotatably connected through a pivot structure, such as a pivot assembly  125   a , to the front leg  110   a . Similarly, pivot assembly  125   b  rotatably connects the second end  126   b  to the second front leg  110   b . The upper portion  152   a  ( FIGS. 4   a  and  4   b ) of the first hinge assembly  150   a  is secured to the first end  124   a  of the upper member  122   a . Similarly, the lower portion  160   a  ( FIGS. 5   a  and  5   b ) is mounted to the first end  132   a  of the first lower member  130   a . By passing an axle  166  through corresponding axle apertures  159   a  in the upper portion  152   a  and a corresponding axle channel  166   a  in the lower portion  160   a , the upper and lower portions  152   a ,  160   a  are hingably secured to each other. As such, the first lower member  130   a  is secured to the first member  122   a , as shown in  FIGS. 1-3 . As shown in  FIGS. 6   a - 6   d , the lower portion  160   a  includes a biased locking pin  170  that is threadably secured to a low profile button  172  to facilitate operating the first hinge assembly  150   a . As well, the locking pin  170  is biased by a spring  174 . Operation of the first and second hinge assembly&#39;s  150   a ,  150   b  and the foldable walker  100  are discussed in greater detail hereinafter.  
      Again referring to  FIGS. 1-3 , preferred embodiments of the foldable walker  100 , when in the operative orientation as shown, may include a seat  142  movably connected to and supported by the first and second cross members  128 ,  136 . As represented, the seat assembly  142  is in a supporting position or allowing a user to be seated thereon. A backrest  144  supported between the first and second front legs  110   a ,  110   b  may also be disposed in supporting relation to the back of a seated user and therefore may include a cushion or pad  146  for the comfort of the user. Preferably, the seat assembly  142  is configured to rotate about the first cross member  128  such that the seat  142  can be rotated toward the backrest  144  and be disposed in substantially confronting relation thereto, when the frame of the walker assembly is in the stored orientation of  FIGS. 7 and 8 .  
      When so disposed, an interior of a storage compartment  148  normally disposed beneath the seat  142  is accessible and exposed. Preferably, the storage compartment  148  is supported by the first and second cross members  128 ,  136  and is formed of a flexible material secured to the first and second cross members  128 ,  136  with a plurality of snaps  149  that permit the storage compartment  148  to be removed. In a preferred embodiment the flexibility of the storage compartment  148  is such as to be disposed in an expanded position when the frame is in the operative orientation of  FIGS. 1-3  and in a collapsed position, between the front and rear leg assemblies, when the frame is in the stored position of  FIG. 8 . However, other embodiments are envisioned wherein the storage compartment  148  comprises a wire mesh basket or other like structure.  
      As represented through out the accompanying Figures, the walker assembly  100  preferably includes a front wheel assembly comprising wheel structures  188  and a rear wheel assembly comprising wheel structures  180 . More specifically, first and second front legs  110   a ,  110   b  each include a different one of the front wheel structures  188  disposed at the second end  114   a ,  114   b  of each leg. As shown, front wheel structures  188  are preferably caster-mounted such that they are fully rotatable about the first and second front legs  110   a ,  110   b , thereby increasing the maneuverability of the foldable walker assembly  100 . The first and second rear legs  120   a ,  120   b  are each connected to one of the rear wheel structures  180  which are disposed on the second end  134   a ,  134   b  of the first and second lower members or portions  130   a ,  130   b . Preferably, the rear wheel assemblies  180  are not caster-mounted and therefore do not pivot about the first and second rear legs  120   a ,  120   b.    
      As shown in  FIGS. 1-3 , at least one preferred embodiment of the foldable walker assembly  100  is configured to assist a user to walk while the first and second lower members or portions  130   a ,  130   b  are locked in their fully extended use position by virtue of the structural features of hinge assemblies  150   a  and  150   b . For ease of description, only the first hinge assembly  150   a  is discussed, it being understood that the hinge assembly  150   b  is the duplicate and/or structural equivalent thereof. During use, first hinge assembly  150   a  is configured as shown in  FIG. 6   a , as viewed from the front of the walker  100 . The core  162  of lower portion  160   a  is disposed within sleeve  154  of the upper portion  152   a . The core  162  is secured in position by a locking pin  170  that extends through both the upper portion  152   a  and a lower portion  160   a . As shown, when the core  162  is properly seated within the sleeve  154 , a locking channel  164  that houses the biased locking pin  170  aligns with a locking aperture  156  formed in the sleeve  154 . The locking channel  164  also houses a spring  174 , which biases the locking pin  170  such that a portion of the locking pin  170  extends outwardly from the locking channel  164  and engages the locking aperture  156 .  
      When it is desired to transport or store the walker assembly  100 , the transverse dimension of the walker assembly  100  may be reduced by folding it into a compact configuration. Moreover, folding of the walker assembly  100  from the operative orientation of  FIGS. 1-3 , wherein the front and rear leg assemblies are in a substantially angular orientation relative to one another, into the stored orientation of  FIGS. 7 and 8 , may be accomplished by the user first pushing upwardly on one of the folding brackets  116   a ,  116   b  or the tie rod  118 . As the tie rod  118  moves upwardly the first and second rear legs  120   a ,  120   b  rotate toward the first and second front legs  110   a ,  110   b  about the pivot points adjacent the second ends  126   a ,  126   b  of the first and second upper members  122   a ,  122   b . The first and second rear legs  120   a ,  120   b  will rotate inwardly until the frame of the walker assembly is configured in the manner shown in  FIGS. 7 and 8  wherein the front and rear leg assemblies are substantially aligned or at least partially aligned along the length of the frame. The walker is shown in  FIGS. 7 and 8  without the storage compartment  148  in order to more clearly show the folding operation.  
      To further reduce the longitudinal dimension of the foldable walker  100 , a user can fold the lower members  130   a ,  130   b  of the first and second rear legs  120   a ,  120   b  and their associated rear wheel assemblies  180  inwardly toward one another. In order to fold first lower member  130   a  into storage position, the user first pulls button  172  inwardly toward the center line of the foldable walker  100 . In doing so, the user compresses the spring  174  and causes the locking pin  170  to be disengaged from the locking aperture  156  of the upper portion  152   a , as shown in  FIG. 6   b . After the locking pin  170  is disengaged from the locking aperture  156  the lower portion  160   a  is pivotal about the axis  166  ( FIG. 6   c ), thereby allowing lower member  130   a  to be swung into its storage position, as shown in  FIG. 8 . Similar steps are performed on the second hinge assembly  150   b  so that lower member  130   b  can be swung into its storage position.  
      Once a user releases the button  172 , the spring  174  causes the locking pin  170  to be urged outwardly from the core  162  into its fully extended position. To lock the wheels in place for use once again, the user may pivot the first lower member  130   a  downwardly from its storage position until the locking pin  170  encounters camming surface  158 , as shown in  FIG. 6   d . As lower member  130   a  continues to be rotated into alignment with upper member  122   a , the locking pin  170  travels along the camming surface  158 , subsequently causing the spring  174  to be compressed and the button  172  to be urged away from the lower portion  160   a  of the first hinge assembly  150   a . Eventually, the locking pin  170  encounters the locking aperture  156  and extends therethrough because of the biasing effect of the spring  174 , as shown in  FIG. 6   a . After the lower member  130   b  has been similarly positioned, the first and second front legs  110   a ,  110   b  and the first and second rear legs  120   a ,  120   b  are urged outwardly away from each other thereby causing folding brackets  116   a ,  116   b  to become fully extended. With the lower members  130   a ,  130   b  so positioned, the foldable walker  100  is configured to assist a user in walking.  
      Preferably, the locking pin  170  is configured such that it is not likely to be inadvertently disengaged from the locking aperture  156 . For example, as shown in  FIGS. 6   a - 6   d , the button  172  is shaped such that it is of a low profile and is therefore not prone to being snagged or pulled during use. As well, it is preferable that the button  172  is shielded by a portion of the hinge assembly  150 . As best shown in  FIG. 6   a , the button  172  is shielded by the portion of the hinge assembly  150   a  that houses the axle  166 . However, the button as shown is merely one embodiment and numerous other shapes are envisioned.  
      Yet another preferred embodiment of the present invention is represented in  FIGS. 9 through 14  and may be substituted, at least in part, for the use of the hinge assemblies  150 A and  150 B as explained above and as represented in detail in the above-described figures. More specifically, in order to compact the configuration and reduce at least the longitudinal dimension of the frame of the walker assembly  100 , and possibly the transverse dimension thereof as well, the front and rear wheel assemblies may be removed from the front and rear leg assemblies. For purposes of clarity, the structure represented in  FIGS. 9 through 14  represents a single lower leg portion. However, it is emphasized that in describing this particular structure, each of the front and rear legs,  114 A,  114 B,  132 A,  132 B is the duplicate and/or structural equivalent of one another such that the description of one lower leg portion is meant to be descriptive of each of the corresponding leg structures. Further, member  200  defines the outwardly extending shaft to which each of the front and rear wheel structures  188  and  180  are secured.  
      Accordingly as clearly shown in  FIGS. 10 through 13 , the transverse dimension of the shaft  200  is at least minimally less than the interior transverse dimension of the lower portion  114 A, etc, of the front and rear leg assemblies. This relative dimensioning allows for the shaft  200  to be inserted within and removed from the interior of the lower portion  114 A, etc, as demonstrated by a comparison of the unassembled and assembled structures respectively represented in  FIGS. 10-11  and  12 . Further, the shaft  200  includes spring bias fingers  202  which are retractable, at least partially, into the interior of the shaft  200  as they pass along the interior surface  204  of the lower portion of the leg  114 A, etc. However, upon the spring bias fingers  202  being aligned with coaxial apertures  206 , the fingers  202  will expand outwardly thereby removably locking or retaining the shaft  200  within the interior of the leg lower portion  114 A, etc. Removal of the shaft  200  from the interior of the leg lower portion  114 A, etc. is accomplished by inwardly depressing the fingers  202  such that they are removed from the apertures  206  and are allowed to slide along the interior surface  204 . However, once the fingers  202  are aligned with and extend outwardly from the apertures  206 , apertures  208  and  210 , respectively formed in the shaft  200  and the leg lower portion  114 A, etc, will be axially aligned. Such axial alignment between the apertures  208  and  210  will facilitate the connection of a retaining connector or bracket  220  in its intended, retaining position as best shown in  FIGS. 13 and 14 .  
      More specifically, the retaining connector or bracket  220  comprises central connecting pin or shaft  222  spaced inwardly from curved arms  224  and  226 . The free ends of the each of the arms  224  and  226  are disposed in spaced relation to one another so as to facilitate passage of lower leg portion  114 A, etc. there between and into the interior  228  of the retaining connector structure  220  and between the arms  224  and  226 . Further, the retaining connector or bracket  220  preferably includes the arms  224  and  226  being formed from a flexible material and as such may expand outwardly to further facilitate passage of the lower leg portion  114 A, etc. into the interior  208  of the retaining connector  220 . In the connected position shown in  FIGS. 13 and 14 , the retaining pin  222  therefore passes through axially aligned apertures  208  and  210 . Also, the retaining pin  220  is preferably of sufficient length to pass outwardly from the outermost aperture  210 ′ as shown in  FIGS. 13 and 14 .  
      Additional structural features include an axially adjustable and removable handle assembly, comprising a first and second handlebar  140   a ,  140   b  adjustably connected to the first end  112   a ,  112   b  of each front leg  110   a ,  110   b , respectively. Preferably, the first and second handlebars  140   a ,  140   b  are secured to the walker assembly  100  with easily manipulated threaded knobs  143 , as are other parts of the walker  100 . The first and second handlebars  140   a ,  140   b  are connected to the first and second front legs  110   a ,  110   b  such that they can be axially adjusted based upon the height of the user. Also, each handlebar  140   a ,  140   b  includes a lever  184 , which is used to activate a brake  182  that is adjacent the rear wheel assemblies  180 . By urging the lever  184  upwardly toward the respective handlebar  140   a ,  140   b , a cable  186  is pulled which in turn causes the brake  182  to engage the rear wheel assembly  180 , thereby preventing the foldable walker  100  from rolling. Further, the levers  184  may be manipulated such that the brakes  182  are activated although the user is no longer exerting force on the lever  184 .  
      With primary reference to  FIGS. 15 through 24 , the present invention comprises yet another most preferred embodiment including a mobile support assembly generally indicated as  300 . Moreover, the mobile support assembly  300  demonstrates a significant degree of versatility by its selective use as either a walker or a wheelchair, dependent upon the disposition of at least one adjustable portion or adjustable frame segment  370  of the frame generally indicated as  302 , as will be described in greater detail hereinafter. For purposes of clarity,  FIG. 15  represents the orientation of the adjustable frame segment  370 , as well as other structural and operative components of the mobile support assembly  300 , so as to facilitate its use as a wheelchair. In contrast,  FIGS. 16 and 17  represent the orientation of the frame  302 , specifically including the adjustable portion or adjustable frame segment  370 , as well as other structural and operative components of the mobile support assembly  300  facilitates its use as a walker.  
      More specific details include the frame  302  comprising two spaced apart side frame segments  304  and  306  each of which include a substantially oblong or “eye” shaped configuration. This configuration of each of the side frame segments is at least partially defined by an upper side frame segment  308  and a lower side frame segment  310  having an outwardly bowed or curvilinear configuration. As will also be explained in greater detail hereinafter, side frame segments  304  and  306  and more specifically the upper and lower side frame segments  308  and  310  may include connecting structures  312 ,  313 ,  315  and  319 , which facilitate the disposition or arrangement of the mobile support assembly  300 , specifically including portions the frame  302  into a compact, reduced size stored orientation for storage, transport, etc, at least partially similar to the one or more embodiments of  FIGS. 1 through 14 . The stored orientation will be described in greater detail hereinafter with primary reference to the mobile support assembly  300  as represented in  FIGS. 20 through 24 .  
      The mobile support assembly  300  further includes a handle assembly generally indicated as  314  including two handles  316  disposed in spaced relation to one another such that an open spacing  318  may be formed there between so as to facilitate placement of an individual in a proper orientation to propel the mobile support assembly  300  when used as either a wheelchair as demonstrated in  FIG. 15  or a walker as demonstrated in  FIGS. 16 and 17 . As will be more specifically explained and described hereinafter, the spacing  318  is rendered more accessible when the frame  302 , or at least one or more structural components thereof is selectively disposed to facilitate use of the mobile support assembly  300  as the walker.  
      Other features of the handle assembly  314  include each of preferably two handles  316  having a handlebar  317  preferably structured in the form of handgrips. In addition and with reference to the embodiment of  FIGS. 1 through 3 , the handle assembly  314  may include levers  184  used to activate a one or more brake structures  182  that are operative-to exert a braking force on the rear wheel assembly  320 . Moreover, the brake structures  182  may be disposed in operative relation to the rear wheels  330  of the embodiment of  FIGS. 15 through 17 . While this hand activated or operated brake assembly is not represented in the embodiments of  FIGS. 15 through 20 , it may be readily adapted for connection to or mounting on the mobile support assembly  300  so as to facilitate hand actuation of the braking assembly  182 , as described with specific reference to the embodiment of  FIGS. 1 through 3 . As such, manipulation of the levers  184  upwardly towards the respective handlebars  317  serves to pull a mechanical connecting cable  186  which in turn causes the brake  182  to engage the rear wheel  330  of the rear wheel assembly  329 , thereby restricting movement of the mobile support assembly  300 . When the hand activated brake assembly or brakes  182  are not utilized on the preferred embodiment of  FIGS. 15 through 20 , a foot activated brake assembly may be utilized, wherein a foot activated lever  332  is associated with brake structures mounted on or connected to each of the rear wheels  330 .  
      As also clearly depicted in FIGS.  15  though  17  and  20 , the mobile support assembly  300  also includes a front wheel assembly  334  comprising front wheels  336  connected to the front legs, which are at least partially defined by a lower end portion of the upper side frame segments  308 . For purposes of clarity the frame  302  may also be described as including a trailing portion and a leading portion, wherein the terms “trailing” and “leading” are described with reference to the normal or conventional, forward direction of travel of the mobile support assembly  300 , whether used as a walker or a wheelchair. More specifically, the leading portion of the frame  302  is generally and at least partially defined by the location of the front wheel assembly  334 , including the front wheels  336 . In contrast the trailing portion of the frame  302  is generally and at least partially defined by the location of the handle assembly  314 , the rear wheel assembly  329  and/or the rear legs  333 .  
      In order to facilitate the maneuverability of the mobile support assembly  300 , each of the front wheels  336  are rotatably connected to the frame  302  and more specifically interconnected to the outer or lower ends of the upper side frame segments  308  by means of a castor like structure shown in detail in  FIG. 18 . More specifically, a castor base or housing  340  connected to the axis of rotation of each of the wheels  336  allows the wheels to swivel appropriately to assume a desired angular orientation for forward, rearward or other directional traveling of the mobile support assembly  300  as desired. As set forth above, the propelling force applied to the handle assembly  314  may either be a pushing force, a pulling force or a combination of both in order to accomplish desired and selected directional traveling.  
      With further reference to  FIG. 18 , at least one preferred embodiment and/or structural modification of the mobile support assembly  300  comprises a foot pedal or like foot support assembly, generally indicated as  342 . The foot support assembly  342  includes a pedal portion  344  and a support arm  346 . The support arm  346  is rotatably or pivotally connected to the lower end of the upper side frame as at  308  by means of a rotatable connecting assembly or pivotal hinge generally indicated as  348 . As such, the leg or foot support assembly  342  may be pivoted into or out of either the operative position represented in  FIG. 18  or the folded, collapsed position, at least partially defining a stored orientation of the mobile support assembly as represented in  FIG. 15 . As set forth above, the stored orientation of the mobile support assembly will be described in greater detail hereinafter.  
      As set forth above, the versatility of the mobile support assembly  300  is facilitated by its selective use as either a walker, as-represented in  FIGS. 16 and 17 , or as a wheelchair, as represented in  FIG. 15 . Accordingly, and with primary reference to  FIG. 15 , the mobile support assembly  300  includes a chair assembly generally indicated as  350  comprising a seat  352  and a back support  354 . The seat  352  is supported by at least a portion of the frame  302  and more specifically by an upper or inner end or portion  333 ′ of the rear leg structure  333  as well as other cooperatively disposed portions of the frame  302 , such as one or more cross braces or members  335 . The seat  352  is connected to the frame  302  in the manner described so as to be securely supported on the frame  302  until or unless the chair assembly  350  is disassembled or separated from the frame  302 .  
      In contrast, the back support  354  is movably or pivotally attached preferably about a lower junction or connection area  360  located on each of the lower corners of the back support  354  generally adjacent the junction of the seat  352  and the back support  354 . Moreover, back support  354  may be positioned in the orientation demonstrated in  FIGS. 16 and 17  when the adjustable portion or adjustable frame segment  370  is disposed in a first orientation as also demonstrated in  FIGS. 16 and 17 . As such, the first orientation of the adjustable frame segment  370  facilitates or enables the use of the mobile support assembly  300  as a walker as demonstrated. In contrast, the adjustable frame segment  370  may be disposed in a second orientation represented in  FIG. 15  wherein the adjustable frame segment  370  is disposed in substantial alignment with the handle assembly  314  and within the spacing  318  between the individual spaced apart handles  316 .  
      The mobile support assembly of the present invention includes an additional structure which facilitates the secure but removable disposition of the adjustment frame segment  370  in each of the first and second orientations. More specifically and with primary reference to  FIGS. 16, 21  and  24 , each of the armrest structures  380  includes an outer end generally indicated as  390  having an indented area  392  which serves to form an outwardly and/or laterally projecting lip or like structure, as at  394 . As best shown in  FIG. 16 , each of the inwardly projecting ends  390  of the oppositely disposed, spaced apart armrests  380  are disposed in interruptive relation to the opposite sides of the adjustable frame segment  370 . Accordingly, when the frame segment  370  is in the aforementioned first orientation, the sides will abut against and be retained by the projecting lips  394  of the inwardly extending or projecting ends  390  of each of the armrests  380 . With further reference to  FIG. 16 , the adjustable frame segment  370  is maintained in the second orientation, as demonstrated in  FIG. 20 , by the provision of outwardly extending hook-like brackets or like structures  396 . Each of the brackets  396  is attached to one of the two spaced apart side members of the adjustable frame segment  370 . Further, each of the brackets  396  is disposed to engage the lower side frame segment  310  about an upper end thereof as at  310 ′. Accordingly, when the adjustable frame segment  370  is in the second orientation the outwardly extending brackets  396  each engage a correspondingly positioned one of the upper ends  310 ′ of the lower side frame segments  310  so as to retain the adjustable frame segment  370  in substantially aligned relation with and between the handles  316 .  
      It is also emphasized that the configuration, dimension and placement of the armrest  380  determines the position and/or angular inclination of the adjustable frame segment  370  when in the aforementioned first orientation, such as when the mobile support assembly  300  is being used as a walker. It is further emphasized that hook like brackets  396  may assume a variety of different structural configurations such as a U-shaped structure having a certain inherent flexibility or bias, so as to effectively clip onto or otherwise be removably connected to the upper ends  310 ′ of the lower side frame segments  310 , as described above.  
      Therefore, the first orientation of the adjustable frame segment  370  is defined by its inward, substantially angular orientation towards the leading portion of the frame  302  and away from the trailing portion thereof and handle assembly  314 . The first orientation of the adjustable frame segment  370  is further defined by its substantially overlying, spaced relation above the seat  352  and the back support  354 , when the back support  354  is disposed in confronting engagement with the seat  352 , as clearly represented in  FIGS. 16 and 17 . Accordingly, when the mobile support assembly  300  is intended for use as a walker, the adjustable frame segment  370 , being in its first orientation, allows access through the spacing  318  to the exterior surface of the back support  354 . As such, the back support  354  may be used as a temporary seat or like support area, on which an individual may rest while assuming a seated position. Concurrently, a cushion or pad  372  may be mounted on the upper end of the adjustable portion or frame segment  370  to serve as a back rest for an individual while that individual is supported in a seated orientation on the back support  354 .  
      With primary reference to  FIG. 15 , when the adjustable frame segment  370  is in the second orientation it is disposed upright substantially within the spacing  318  in aligned relation with the handle assembly  314  and the spaced apart handles  316 . Similarly, the back support  354  is disposed in an upright orientation as represented and may be at least partially supported on or by the adjustable frame segment  370  when it is in the second orientation. As such, the chair assembly  350  is readily accessible thereby enabling and facilitating the use of the mobile support assembly as a wheelchair, as described.  
      Other structural and operative features which are at least partially similar to the embodiments of  FIGS. 1 through 14  include the vertical adjustment or removal of the handle assembly  314  by facilitating the vertical adjustment of each of the handles  316 . As such, the elongated portions of the handles  316  may include a plurality of apertures as at  319 , each of which may receive a spring biased lock member  321  disposed on the interior of the elongated portion  316 ′ of the handle  316 , or within the upper end  310 ′ of the lower side frame segment  310  so as to facilitate the vertical adjustment of the grips or handlebar portions  317 . A structural modification of the handle assembly  314  and an associated portion of the frame are represented in  FIG. 24 . As disclosed each of the handles  316  may be connected in an immediate adjacent relation to the upper end  310 ′ of the lower side frame segment  310 , rather being connected in axial alignment therewith, as represented in  FIGS. 16, 19  and  20 . In either structural variation, the handles  316  may be vertically or longitudinally adjusted along their respective lengths so as to adapt to different individuals, which are positioned to propel the mobile support assembly  300  in any preferred direction.  FIGS. 16 and 17  further demonstrate the adjustable features of the handle assembly  314  wherein each of the handles  316  are located at a different height. Disengagement of the biased lock member  321  from any of the apertures  319  allows the complete removal of the handles  316  from the frame.  
      As set forth above, the present invention demonstrates significant versatility by virtue of its multi-use construction as well as the structuring of the various components thereof so as to facilitate the mobile support assembly  300  being easily and quickly disposed into the stored orientation. As such, various components, to be described in greater detail hereinafter, may be selectively disposed from their normal, operative orientation, whether the mobile support assembly  300  is used as a walker or a wheelchair, or into a compact position so as to at least partially define the stored orientation.  
      By way of example, the rear legs  333  and the rear wheels  330  associated therewith are adjustably interconnected to the remainder of the frame  302  and more specifically to the frame segments  333 ′ used to at least partially support the seat  352 . This adjustable and movable interconnection is accomplished through the provision of hinge like connector structures  319  which allow the rear legs  333  to be folded inwardly, substantially under the seat  352  or a portion of the frame  302  associated with the seat  352 .  
      Selective positioning of various portions or components of the frame  302  in the aforementioned stored orientation is further demonstrated in  FIGS. 22 through 24 . As shown therein, the stored orientation may also be partially defined by the back support  354 , the adjustable frame segment  70 , the handles  316 , arm rests  380  and upper ends  308 ′ and  310 ′ of the upper and lower side frame segment  308  and  310  respectively, being disposed in predetermined relation to one another, as described in greater detail hereinafter. More specifically and with reference to  FIG. 24 , fixedly interconnected portions of frame  302  include the arm rest  380  connected to and support by the upper end  308 ′ of the upper side frame segment as well as the upper end  310 ′ of the lower side frame segment and the correspondingly positioned handle  316 . This collection of components represents a “sub-unit” of the frame  302  which may be collectively positioned between an operative orientation as demonstrated in  FIG. 20  and a collapsed position as demonstrated in  FIG. 22 , wherein portions of the frame  302  assume the aforementioned stored orientation.  
      In order to accomplish the compact position of the sub-unit demonstrated in  FIG. 24 , a plurality of connectors  313  and  315  are disposed and structured to movably or adjustably connect the sub-unit of  FIG. 24  to the remainder of the frame  302 . More specifically, as represented in  FIG. 23 , the connector  312  is separable and comprises removably attached portions- 313 ′ and  313 ″. A secure but removable connection or attachment of the connector segments  313 ′ and  313 ″ may be accomplished utilizing a retaining connector or bracket  220  as disclosed and described in detail with reference to the embodiment of  FIGS. 9 and 14 . As such, a central member or shaft  222  associated with the separate retaining connectors  220  passes through apertures  312  formed in the connector segment  313 ′ and extend into the interior of segment  313 ″. The curved arms  224  and  226  of separate ones of the retaining connectors  220  will thereafter surround the segments  313 ′ and  313 ′ when in the connected or assembled position as demonstrated in  FIG. 23 . The removal of the retaining connector  220  will allow the segments  313 ′ and  313 ″ to be separated, wherein segment  313 ″ is fixedly or integrally connected to the lower extremity of the upper end  308 ′ of the upper side frame segment as disclosed in  FIG. 22 . In addition, a hinge type connector  315  is structured such that the upper end  310 ′ of the lower side frame segment  310  is pivotal inwardly in overlying relation to the seat  352  as well as the back support  354  and adjustable frame segment  370  when the back support  354  and the frame segment  370  are disposed in overlying and/or confronting relation to the seat  352  as clearly disclosed in  FIG. 22 .  
      It is recognized that  FIG. 22  discloses only one of the sub-units represented in  FIG. 24  as being disposed in the compact position. However,  FIG. 22  is intended to be representative of the structural and operative features of both of the oppositely disposed sub-units represented in  FIG. 24 , located on opposite sides of the mobile support assembly  300 . As such, both of the  FIG. 24  sub-units are pivotal or foldable inwardly into a compact position, so as to at least partially define the aforementioned stored orientation.  
      It is also recognized that the adjustable frame segment  370  is normally or typically retained in its first orientation, as represented in  FIG. 16 , by the inwardly projecting lip  394  of the end  390  of each of the arm rests  380 . However, in order for the adjustable frame segment  370  to assume the position demonstrated in  FIG. 22  the arm rest  380  may be forced at least a minimal distance outwardly such that side portions  370 ′ of the adjustable frame segment  370  may pass beyond the inwardly projecting ends  390  of each of the arm rests  380  to assume the folded or collapsed position demonstrated in  FIG. 22 .  
      The selective and efficient disposition of certain components or portions of the frame  302  in a collapsed position so as to define the stored orientation of significantly reduced dimension thereby greatly facilitates the storage or transport of the mobile support assembly  300 . In addition, the overall configuration and dimension of the mobile support assembly  300  is sufficiently reduced so as to allow its placement in small storage or travel carton or container of a size which renders the storage or transport of the mobile support assembly  300 , when in the stored orientation, effective and efficient.  
      Yet another most preferred embodiment of the present invention comprises a mobile support assembly generally indicated as  400 , being primarily in the form of a walker assembly. The support assembly  400  comprises a frame generally indicated as  402  which is structured to include a seat  142  as well as a depending compartment  148  located beneath the seat  142  as clearly disclosed in the additional preferred embodiments of  FIGS. 1-3 . For purposes of clarity and accurately describing the various components of the frame  402 , the seat  142  and the compartment  1488  are not shown in  FIG. 25  through  27 . However, it is emphasized that the overall frame structure, as will be apparent hereinafter, is clearly adapted for receipt of the seat  142 , compartment  148  and backrest portion  146 . More specifically, the seat  142  is designed to be connected to and partially supported on the cross bars  404  by appropriate connecting strips as demonstrated in  FIGS. 1-3  or by other appropriate connecting structure. As such, the compartment  148  will be located beneath the seat  142  and between the crossbars  404  in somewhat of a dependent relation to the seat  142 .  
      Further, the frame  402  includes the back support member  406  on which the back supporting pad  146  is mounted. The frame also includes a front wheel assembly, generally indicated as  408  and a rear wheel assembly, generally indicated as  410 . As with the embodiments of  FIGS. 1-3 , the front leg assembly  408  includes two spaced apart legs  409  which vary in dimension and/or configuration relative to the embodiment of  FIGS. 1-3 .  
      More specifically, each of the legs  409  includes an elongated upper or primary portion  409 ′ and a fixedly or integrally connected lower portion  412 . As is clearly represented in  FIGS. 25 through 27 , the upper portion  409 ′ is angularly oriented relative to the lower portions  412 . Further, the lower portion  412  is disposed in a substantially upright or at least partially vertical orientation when the frame  402  is disposed in an upright, operative orientation as represented in the accompanying figures. In contrast, the two spaced apart legs  411  at least partially define the rear leg assembly  410 . The rear legs  411  differ in dimension and configuration from the front legs  409  in that they have substantially linear, elongated configuration with a greater longitudinal dimension then the overall length of the front legs  409 . Accordingly, each of the rear legs  411  include a lower portion  413  disposed in coaxial alignment with the primary or upper portion thereof.  
      As set forth above, frame  402 , as represented in  FIGS. 25 through 27 , is absent the inclusion of front and rear wheel assemblies  420  and  420 ′ respectively. With specific reference to  FIG. 28  and as similarly represented in the embodiments of  FIGS. 1-3 , each of the legs  409  and  411  include front wheel assemblies  420  and rear wheel assemblies respectively connected to corresponding lower portions  412  and  413 . Each of the wheel assemblies  420 ′ has an elongated connecting shaft  200 ′ and appropriately sized wheel structure  422 . Moreover, each of the front legs  409  of the front leg assembly  408  includes a wheel assembly  420  secured to the lower portions  412  thereof. Similarly, each of the rear legs  411  include individual wheel assemblies  420 ′ connected to the lower portion  413  thereof. Accordingly, the support assembly  400  can be said to have a front wheel assembly defined by two of the wheel assemblies  420  and a rear wheel assembly defined by an additional two wheel assemblies  420 ′ connected to the lower portions  412  and  413  of the respective front and rear legs  409  and  411 .  
      One feature of the walker of the mobile support assembly  400  is the ability to efficiently adjust the height of the frame  402  relative to any supporting surface on which the frame  402  is positioned as demonstrated in  FIGS. 25-27 . Accordingly, the varying of the height of the frame  402  relative to any supporting surface facilitates its use by individuals of varying heights and sizes, whether the user/individual is standing or sitting the support on the seat  142 . Such variable height adjustment of the frame  402 -is accomplished by virtue of the fact that the front wheel assemblies  420  and the rear wheel assemblies  420 ′ and each of the wheel structures  422  associated therewith are adjustably and removably connected to the respective lower portions  412  and  413  of the front and rear legs  409  and  411 .  
      For purposes of clarity the structures represented in  FIGS. 30 through 32  are intended to depict a single one of the lower leg portions  412  and  413 . However, it is emphasized that in describing this particular structure, each of the front and rear legs  409  and  411  is the duplicate or structural equivalent of one another, at least in terms of establishing an adjustable interconnection with corresponding ones of the wheel structures  422  and associated shaft  200 ′. Accordingly, the description of one lower leg portion is meant to be descriptive of each of the corresponding leg structures.  
      Accordingly, the transverse dimension of each of the shafts  200 ′ is at least minimally less than the interior transverse dimension of the lower portions  412  and  413  of the front and rear legs  409  and  411 . This relative dimensioning allows the shaft  200 ′ to be inserted within and removed from the interior of the lower portions  412  and  413  as demonstrated by a comparison of the unassembled and assembled structures respectively represented in  FIGS. 30 through 32 . Further, the shaft  200 ′ includes spring biased fingers  202 ′ which are retractable, at least partially, into the interior of shaft  200 ′ as they pass along the interior surface  204 ′ of the lower portions  412  and  413  of the front and rear legs. However, upon the spring biased fingers  202 ′ being aligned with coaxial apertures  206 ′, the fingers  202 ′ will expand outwardly thereby removably locking or retaining the shaft  200 ′ within the interior of the lower portions  412  and  413 . Removal of the shaft  200 ′ from the interior of the lower portions  412  and  413  is accomplished by inwardly depressing the fingers  202 ′ such that they are removed from the apertures  206 ′ and are allowed to slide along the interior surface  204 ′. Once the fingers  202 ′ are aligned with and extend outwardly from the apertures  206 ′, apertures  208 ′ and  210 ′ respectively formed in the shaft  200 ′ and the lower portions  412  and  413 , will be axially aligned. Such axial alignment between the apertures  208 ′ and  210 ′ will facilitate the connection of a retaining connector or bracket  220 ′ as represented in  FIG. 29 , in its intended, retaining position.  
      By virtue of this adjustable and variable connection as demonstrated in  FIGS. 30 through 32 , the height of the frame  402 , such as when it is in its operative position as demonstrated in  FIGS. 25 through 27 , can be easily varied or adjusted to accommodate users of various sizes and heights merely by placing the fingers  202 ′ in different ones or pairs of the apertures  206 ′. To facilitate an adjustment of the frame  402  at different heights, the lower portions  412  and  413 , or other portions of the legs  409  and  411  include a plurality of such pairs of apertures  206 ′. Accordingly, the corresponding wheel assemblies  420  and  420 ′ can extend outwardly from and along the length of each of corresponding ones of the legs  409  of the front leg assembly  408  and corresponding ones of the legs  411  of the rear leg assembly  410 . Such variable outward extension is schematically represented by directional arrows  430  in  FIG. 28 .  
      With primary reference to  FIG. 29 , a retaining connector or bracket  220 ′ is disposed and structured to reliably but removably retain the intended connection between the wheel assemblies  420  and  420 ′ and the corresponding legs  409  and  411  of the front and rear leg assemblies  408  and  410 . Accordingly, the retaining connector  220 ′ comprises a central connecting pin  222 ′ spaced on the interior of curved arms  224 ′ and  226 ′. This embodiment is structurally distinguishable but functionally similar from the retaining connector or bracket  220  represented in  FIG. 9 . As such, either embodiment of the connecting bracket can be used with one or more of the different preferred embodiments of the present invention, as set forth herein.  
      More specifically, the curved arms  224 ′ and  226 ′ have a sufficient longitudinal dimension so as to surround a portion of the front or rear legs, as at  412 ,  413  thereby further facilitating the placement of the connecting pin  222 ′ in its intended retaining position as it extends through aligned apertures  210 ′, formed in the leg portions  412 ,  413 , and  208 ′, formed in the shaft  200 ′, when the shaft  200 ′ and leg portions  412 ,  413  are assembled as represented in  FIGS. 29 and 32 . In addition, the free ends of each of the curved arms  224 ′ and  226 ′ include a connector or latch configuration  415 , which enables the free ends to be removably connected to one another. The provision of the latch configuration  415  at the free ends further serves to maintain the retaining connector or bracket  220 ′ in its intended operative position. Moreover, when in its operative position of  FIG. 29 , the retaining pin  222 ′ serves to prevent inadvertent removal or relative positioning of the shaft  200 ′ from its intended, retained placement within the corresponding leg portion  412 ,  413 , as set forth above.  
      Yet another feature of the present invention is demonstrated in  FIGS. 33 and 34 . More specifically, the mobile support assembly  400  and the frame  402  include a bracket assembly generally indicated as  450 . The bracket assembly  450  is movably interconnected between the front leg assembly  408  and the rear leg assembly  410 . In a most preferred embodiment and as represented in  FIGS. 25-27 , two such bracket assemblies  450  are provided. However, it is within the spirit of scope of the present invention that the mobile support assembly  400 , being primarily in the form of a collapsible walker assembly, may include only a single one of the bracket assemblies  450 .  
      When the frame  402  is in its operative position, the bracket assembly  450  assumes a substantially elongated, linear configuration including bracket segments  454  and  456  disposed in substantially linearly aligned relation to one another. Further, each of the bracket segments  454  and  456  have their opposite or outer, distal ends pivotally or otherwise movably connected to the corresponding legs  409  and  411  of the front and rear leg assemblies  408  and  410  respectively. The opposite or correspondingly positioned inner, proximal ends of each of the bracket segments  454  and  456  are pivotally or otherwise movably connected to one another by a pivot or linking pin  459 .  
      Moreover, when the frame  402  is disposed from the operative position, represented in  FIGS. 25-27  and  33 , into a stored orientation, the bracket segments  454  and  456  will assume a folded position. The folded position of the bracket assembly  450  is more specifically described by their upward movement, as schematically indicated by the directional arrow  460 . Therefore, when in the fully collapsed, stored orientation, the front and rear leg assemblies  408  and  410  are disposed in a somewhat aligned or at least coextending position as clearly demonstrated in embodiments of  FIGS. 7 and 8 . In such a stored orientation, the bracket segments  454  and  456  will also be somewhat aligned and disposed in coextending relation to one another as represented in  FIG. 34 . In order to maintain the bracket assembly  450  and more specifically the bracket segments  454  and  456  in the folded position, and thereby maintain the frame  402  in its stored orientation, a lock assembly generally indicated as  452  is provided.  
      The lock assembly  452  comprises a female member or portion  462  including a flange having an aperture  462 ′ connected to and movable with one of the bracket segments, such as at  454 . The lock assembly  452  further includes a male portion or member  464  including a finger or pin  464 ′ connected to and movable with the other of the two bracket segments, as at  456 . When the bracket assembly  450  is in the linearly aligned operative position represented in  FIG. 33  the female portion  462  and the male portion  464  are disposed in spaced relation to one another. However, when the bracket assembly  450  is reconfigured to allow the frame  402  to assume its stored orientation, the bracket segments  454  and  456  will be disposed in at least a partially coextending position as indicated in  FIG. 34 . In such position, the female portion  462  will become substantially aligned with the male portion  464  to the extent that they may be brought into movable, retaining engagement with one another.  
      More specifically, the female portion  462  comprises the apertured flange and the male portion  464  a spring biased, retractable finger  464 ′. When the aperture  462 ′ is disposed in aligned relation with the connecting finger  464 ′, manipulation of the male portion  464  in a reciprocal or retractable manner, as schematically indicated by directional arrow  465 , will serve to dispose the retaining finger  464 ′ through the aperture  462 ′. The male and female portions  462  and  464  will thereby be removably connected together facilitating maintenance of the bracket segments  454  and  456  in the folded position. When so retained, the front and rear leg portions  408  and  410  will be “locked” in the stored orientation. In order to reorient the frame  402  and more specifically the front and rear leg portions  408  and  410  in its operative position as demonstrated in  FIG. 33 , a manual manipulation of the spring biased, male portion  464  can be accomplished at least to the extent of removing the retaining finger  464 ′ from the apertured  462 ′ thereby releasing the bracket segments  454  and  456  from one another and allowing them to assume an operative, linear configuration.  
      Many variations and modifications may be made to the above-described embodiments of the foldable walkers  100  and  400  and the multi-use mobile support assembly  300 , without departing from the spirit, principles and intended scope of theses embodiments. Since many modifications, variations and changes in detail can be made to the described preferred embodiment of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents.  
      Now that the invention has been described,