WO2008103143A1 - Ensemble formant support mobile - Google Patents

Ensemble formant support mobile Download PDF

Info

Publication number
WO2008103143A1
WO2008103143A1 PCT/US2007/004685 US2007004685W WO2008103143A1 WO 2008103143 A1 WO2008103143 A1 WO 2008103143A1 US 2007004685 W US2007004685 W US 2007004685W WO 2008103143 A1 WO2008103143 A1 WO 2008103143A1
Authority
WO
WIPO (PCT)
Prior art keywords
frame
orientation
assembly
mobile support
disposed
Prior art date
Application number
PCT/US2007/004685
Other languages
English (en)
Inventor
Phillip Minyard Willis
Randy Bernard
Original Assignee
Phillip Minyard Willis
Randy Bernard
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Phillip Minyard Willis, Randy Bernard filed Critical Phillip Minyard Willis
Priority to PCT/US2007/004685 priority Critical patent/WO2008103143A1/fr
Publication of WO2008103143A1 publication Critical patent/WO2008103143A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/04—Wheeled walking aids for patients or disabled persons
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H3/04—Wheeled walking aids for patients or disabled persons
    • A61H2003/046—Wheeled walking aids for patients or disabled persons with braking means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/01—Constructive details
    • A61H2201/0161—Size reducing arrangements when not in use, for stowing or transport
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16—Physical interface with patient
    • A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/1628—Pelvis
    • A61H2201/1633—Seat

Definitions

  • This invention is directed to a mobile support assembly which is structured to be selectively disposed in either a first orientation, wherein the assembly may be used as a walker or in a second orientation wherein the assembly may be used as a wheelchair.
  • Various preferred embodiments of the mobile support assembly facilitate the selective and relative disposition of the various components thereof into a folded, collapsed position for storage, shipment, etc. when not in use.
  • certain of the structural components may be variably disposed dependent on whether the mobile support assembly is used as a walker or a wheelchair.
  • walker assemblies which typically allow an individual to support oneself in an upright, substantially stable orientation while standing or walking.
  • known walker assemblies allow the individual to safely traverse over both interior and exterior support surfaces, such as floors, sidewalks, streets, etc.
  • 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.
  • the advantage of known walker assemblies include a smaller frame of generally lightweight construction which may be more easily stored or transport than other devices when not in use.
  • 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.
  • 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.
  • collapsible wheelchairs have been developed which are easier to handle, transport and store when not in use.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the frame 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.
  • a handle assembly which may be adjustably and/or removably secured to the frame of one or more embodiments of the walker assembly.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 rearwardly 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 is further demonstrated by its selective disposition in the second orientation.
  • the adjustable frame segment 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.
  • the adjustable support segment 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.
  • 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.
  • Figure 1 is a front perspective view of an embodiment, among others, of a foldable walker in an operative position.
  • Figure 2 is a rear perspective view of the foldable walker as shown in Figure 1.
  • Figure 3 is a side view of the foldable walker shown in Figure 1.
  • Figures 4a and 4b are front and side views of an upper portion of an embodiment of a hinge assembly as used on the foldable walker shown in Figure 1.
  • Figures 5a and 5b are front and side views of a lower portion of an embodiment of a hinge assembly as used on the foldable walker shown in Figure 1.
  • Figures 6a-6d are partial, cut-away side views of an embodiment of a hinge assembly, including upper and lower portions as shown in Figures 4a-4b and 5a-5b, respectively, as used with the foldable walker shown in Figure 1.
  • Figure 7 is a rear perspective view of the foldable walker shown in Figure 1, when partially folded as it is being disposed into a stored orientation.
  • Figure 8 is a rear perspective view of the foldable walker shown in Figure 1, when fully folded and in the stored orientation .
  • Figure 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.
  • Figure 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.
  • Figure 11 is a side view in partial cutaway of the embodiment of Figure 10.
  • Figure 12 is a front view in partial cutaway of the embodiments of Figures 10 and 11 in a connected or assembled position.
  • Figure 13 is a front view in partial cutaway of the embodiment of Figure 12 with the retaining connector, represented in Figure 9, disposed in a retaining position relative to the correspondingly connected leg and wheel assemblies.
  • Figure 14 is a sectional view along line 14-14 of Figure 13.
  • Figure 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.
  • Figure 16 is a side perspective view of the embodiment of Figure 1, wherein " the mobile support assembly has assumed- a first orientation enabling its use as a walker.
  • Figure 17 is a rear perspective view of the embodiment of Figure 16.
  • Figure 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.
  • Figure 19 is a detailed view in partial cutaway of one handle of an adjustable handle assembly, the position of which may be selectively varied.
  • Figure 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.
  • Figure 21 is a perspective view in detail of an armrest associated with, the preferred embodiment of Figure 20 as well as other embodiments described hereinafter.
  • Figure 22 is a detailed view in partial cutaway of the embodiment of Figure 20, wherein certain structural components thereof are disposed in a collapsed and compact orientation.
  • Figure 23 is a detailed view in partial cutaway of a connector associated with the collapsible nature of the embodiment of Figure 22.
  • Figure 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 Figure 20.
  • Figures 1-3 illustrate an embodiment of a foldable walker 100 in an operative orientation.
  • 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 110a and a second front leg 110b secured to each other by at least a first cross member 128. The first front leg 110a and a second front leg 110b are each pivotally connected to the rear leg assembly, which comprises a first rear leg 120a and a second rear leg 120b, respectively.
  • the first and second rear legs 120a, 120b each include an upper member or portion 122a, 122b, which in at least one preferred embodiment, are hingedly attached to a respective lower member or portion 130a, 130b by hinge assemblies 150a, 150b, respectively, as is discussed in greater detail hereinafter.
  • the first upper member 5 122a and a second upper member 122b 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
  • first cross member 128, the second cross member 136, and cross member 129 are welded to brackets 127 which are in turn welded to
  • first and second front legs 110a, 110b are preferably connected to the first and second upper members 122a, 122b, respectively, by folding brackets
  • the first and second folding brackets 116a, 116b are preferably connected to each other with a tie rod 118 and are configured such that the folding brackets 116a, 116b only collapse when the tie rod 118 is pushed upwardly away from the support surface beneath the foldable walker 100.
  • first and second upper members or portions 122a, 122b are hingably connected to the first and second lower members or portions 130a, 130b by first and second hinge assemblies 150a, 150b, respectively.
  • first and second hinge assemblies 150a, 150b respectively.
  • the second rear leg 120b has equivalent structural and operative features.
  • the second end 126a of the first upper member 122a is preferably rotatably connected through a pivot structure, such as a pivot assembly 125a, to the front leg 110a.
  • pivot 35 assembly 125b rotatably connects the second end 126b to the second front leg 110b.
  • the upper portion 152a ( Figures 4a and 4b) of the first hinge assembly 150a is secured to the first end 124a of the upper member 122a.
  • the lower portion 160a ( Figures 5a and 5b) is mounted to the first end 132a of the first lower member 130a.
  • the upper and lower portions 152a, 160a are hingably secured to each other.
  • the first lower member 130a is secured to the first member 122a, as shown in Figures 1-3.
  • the lower portion 160a includes a biased locking pin 170 that is threadably secured to a low profile button 172 to facilitate operating the first hinge assembly 150a.
  • the locking pin 170 is biased by a spring 174. Operation of the first and second hinge assembly's 150a, 150b and the foldable walker 100 are discussed in greater detail hereinafter.
  • 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 110a, 110b 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.
  • 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 Figures 7 and 8.
  • an interior of a storage compartment 148 normally disposed beneath the seat 142 is accessible and exposed.
  • 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
  • the storage compartment 148 is such as to be disposed in an expanded position when the frame is in the operative orientation of Figures 1-3 and in a collapsed position, between the front and rear leg assemblies, when the frame is in the stored position of Figure 8.
  • the storage compartment 148 comprises a wire mesh basket or other like structure .
  • 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 110a, 110b each include a different one of the front wheel structures 188 disposed at the second end 114a, 114b of each leg. As shown, front whee'l structures 188 are preferably caster-mounted such that they are fully rotatable about the first and second front legs 110a, 110b, thereby increasing the maneuverability of the foldable walker assembly 100.
  • the first and second rear legs 120a, 120b are each connected to one of the rear wheel structures 180 which are disposed on the second end 134a, 134b of the first and second lower members or portions 130a, 130b.
  • the rear wheel assemblies 180 are not caster- mounted and therefore do not pivot about the first and second rear legs 120a, 120b.
  • first hinge assembly 150a is configured as shown in Figured 6a, as viewed from the front of the walker 100.
  • the core 162 of lower portion 160a is disposed within sleeve 154 of the upper portion 152a.
  • the core 162 is secured in position by a locking pin 170 that extends through both the upper portion 152a and a lower portion 160a.
  • 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.
  • the transverse dimension of the walker assembly 100 may be reduced by folding it into a compact configuration.
  • folding of the walker assembly 100 from the operative orientation of Figures 1-3, wherein the front and rear leg assemblies are in a substantially angular orientation relative to one another, into the stored orientation of Figures 7 and 8, may be accomplished by the user first pushing upwardly on one of the folding brackets 116a, 116b or the tie rod 118.
  • the tie rod 118 moves upwardly the first and second rear legs 120a, 120b rotate toward the first and second front legs 110a, 110b about the pivot points adjacent the second ends 126a, 126b of the first and second upper members 122a, 122b.
  • the first and second rear legs 120a, 120b will rotate inwardly until the frame of the walker assembly is configured in the manner shown in Figures 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 Figures 7 and 8 without the storage compartment 148 in order to more clearly show the folding operation.
  • a user can fold the lower members 130a, 130b of the first and second rear legs 120a, 120b and their associated rear wheel assemblies 180 inwardly toward one another.
  • the user first pulls button 172 inwardly toward the center line of the foldable walker 100.
  • the user compresses the spring 174 and causes the locking pin 170 to be disengaged from the locking aperture 156 of the upper portion 152a, as shown in Figure 6b.
  • the spring 174 causes the locking pin 170 to be urged outwardly from the core 162 into its fully extended position.
  • the user may pivot the first lower member 130a downwardly from its storage position until the locking pin 170 encounters camming surface 158, as shown in Figure 6d.
  • 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 160a of the first hinge assembly 150a.
  • the locking pin 170 encounters the locking aperture 156 and extends therethrough because of the biasing effect of the spring 174, as shown in Figure 6a.
  • the first and second front legs 110a, 110b and the first and second rear legs 120a, 120b are urged outwardly away from each other thereby causing folding brackets 116a, 116b to become fully extended.
  • the foldable walker 100 is configured to assist a user in walking.
  • the locking pin 170 is configured such that it is not likely to be inadvertently disengaged from the locking aperture 156.
  • 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.
  • the button 172 is shielded by a portion of the hinge assembly 150.
  • the button 172 is shielded by the portion of the hinge assembly 150a that houses the axle 166.
  • the button as shown is merely one embodiment and numerous other shapes are envisioned.
  • Yet another preferred embodiment of the present invention is 11
  • each of the front and rear legs, 114A, 114B, 132A, 132B 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.
  • member 200 defines the outwardly extending shaft to which each of the front and rear wheel structures 188 and 180 are secured.
  • the transverse dimension of the shaft 200 is at least minimally less than the interior transverse dimension of the lower portion 114A, 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 114A, etc, as demonstrated by a comparison of the unassembled and assembled structures respectively represented in Figures 10-11 and 12.
  • 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 114A, etc. However, upon the spring bias fingers 202 being aligned with coaxial apertures 206, the fingers
  • 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 114A, etc. there between and into the interior 228 of the retaining connector structure 220 and between the arms 224 and 226.
  • 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 114A, etc. into the interior 208 of the retaining connector 220.
  • 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 Figures 13 and 14.
  • Additional structural features include an axially adjustable and removable handle assembly, comprising a first and second handlebar 140a, 140b adjustably connected to the first end 112a, 112b of each front leg 110a, 110b, respectively.
  • the first and second handlebars 140a, 140b are secured to the walker assembly 100 with easily manipulated threaded knobs 143, as are other parts of the walker 100.
  • each handlebar 140a, 140b is connected to the first and second front legs 110a, 110b such that they can be axially adjusted based upon the height of the user.
  • each handlebar 140a, 140b includes a lever 184, which is used to activate a brake 182 that is adjacent the rear wheel assemblies 180.
  • 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.
  • 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.
  • the present invention comprises yet another most preferred embodiment including a mobile support assembly generally indicated as 300.
  • 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.
  • Figure 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.
  • Figures 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
  • 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 Figures 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 Figures 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 Figure 15 or a walker as demonstrated in Figures 16 and 17.
  • 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 .
  • 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.
  • the brake structures 182 may be disposed in operative relation to the rear wheels 330 of the embodiment of Figures 15 through 17. While this hand activated or operated brake assembly is not represented in the embodiments of Figures 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 Figures 1 through 3.
  • 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.
  • 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.
  • 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.
  • 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 Figure 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.
  • 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.
  • 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.
  • the leg or foot support assembly 342 may be pivoted into or out of either the operative position represented in Figure 18 or the folded, collapsed position, at least partially defining a stored orientation of the mobile support assembly as represented in Figure 15.
  • the stored orientation of the mobile support assembly will be described in greater detail hereinafter.
  • 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.
  • 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.
  • back support 354 may be positioned in the orientation demonstrated in Figures 16 and 17 when the adjustable portion or adjustable frame segment 370 is disposed in a first orientation as also demonstrated in Figures 16 and 17.
  • 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.
  • the adjustable frame segment 370 may be disposed in a second orientation represented in Figure 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 .
  • 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.
  • 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.
  • the adjustable frame segment 370 is maintained in the second orientation, as demonstrated in Figure 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' .
  • 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.
  • 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.
  • 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 .
  • 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 Figures 16 and 17.
  • the adjustable frame segment 370 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.
  • 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.
  • 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.
  • the adjustable frame segment 370 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.
  • 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.
  • the chair assembly 350 is readily accessible thereby enabling and facilitating the use of the mobile support assembly as a wheelchair, as described.
  • FIG. 1 A structural modification of the handle assembly 314 and an associated portion of the frame are represented in Figure 24.
  • 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 Figures 16, 19 and 20.
  • 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.
  • Figures 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.
  • 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.
  • various components 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.
  • the rear legs 333 and the rear wheels 330 associated therewith are adjustably interconnected to the 2j5
  • FIG. 22 through 24 Selective positioning of various portions or components of the frame 302 in the aforementioned stored orientation is further demonstrated in Figures 22 through 24.
  • 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.
  • 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 Figure 20 and a collapsed position as demonstrated in Figure 22, wherein portions of the frame 302 assume the aforementioned stored orientation.
  • a plurality of connectors 313 and 315 are disposed and structured to movably or adjustably connect the sub-unit of Figure 24 to the remainder of the frame 302. More specifically, as represented in Figure 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 Figures 9 and 14.
  • 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 Figure 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 Figure 22.
  • 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 Figure 22.
  • Figure 22 discloses only one of the sub-units " represented in Figure 24 as being disposed in the compact position. However, Figure 22 is intended to be representative of the structural and operative features of both of the oppositely disposed sub-units represented in Figure 24, located on opposite sides of the mobile support assembly 300. As such, both of the Figure 24 sub-units are pivotal or foldable inwardly into a compact position, so as to at least partially define the aforementioned stored orientation.
  • the adjustable frame segment 370 is normally or typically retained in its first orientation, as represented in Figure 16, by the inwardly projecting lip 394 of the end 390 of each of the arm rests 380.
  • 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 Figure 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.
  • 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 .
  • Many variations and modifications may be made to the above- described embodiments (s) of the foldable walker 100 and the multi- use mobile support assembly 300 without departing from the spirit, principles and intended scope of theses embodiments.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Pain & Pain Management (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Rehabilitation Therapy (AREA)
  • Rehabilitation Tools (AREA)

Abstract

La présente invention concerne un ensemble formant support mobile à usage multiple conçu pour être utilisé au choix en tant que déambulateur ou fauteuil roulant, comprenant un cadre présentant au moins un segment de cadre réglable conçu pour être disposé soit dans une première orientation, soit dans une seconde orientation. Le cadre peut être pliable et comprend au moins une première jambe avant et au moins une première jambe arrière, auxquelles sont reliés des ensembles formant roulettes pour le déplacement du cadre, qu'il soit utilisé en tant que déambulateur ou fauteuil roulant, sur un sol différent ou des surfaces de support différentes. Dans un mode de réalisation, la première jambe arrière comprend un élément supérieur présentant une première extrémité et une seconde extrémité et un élément inférieur présentant une première extrémité et une seconde extrémité. La première extrémité de l'élément supérieur peut être reliée de manière pivotante à la première extrémité de l'élément inférieur, et l'élément inférieur est amovible avec un ensemble formant roulette correspondant ou peut pivoter entre une position d'utilisation étendue et une position de rangement pliée.
PCT/US2007/004685 2007-02-21 2007-02-21 Ensemble formant support mobile WO2008103143A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2007/004685 WO2008103143A1 (fr) 2007-02-21 2007-02-21 Ensemble formant support mobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2007/004685 WO2008103143A1 (fr) 2007-02-21 2007-02-21 Ensemble formant support mobile

Publications (1)

Publication Number Publication Date
WO2008103143A1 true WO2008103143A1 (fr) 2008-08-28

Family

ID=39710327

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/004685 WO2008103143A1 (fr) 2007-02-21 2007-02-21 Ensemble formant support mobile

Country Status (1)

Country Link
WO (1) WO2008103143A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2172177A1 (fr) * 2008-10-02 2010-04-07 Gregor Horacek Aide à la marche pliable
US7837208B2 (en) 2003-10-07 2010-11-23 Phillip Minyard Willis Mobile support assembly
US7926834B2 (en) 2003-10-07 2011-04-19 AMG Medical, USA Mobile support assembly
US8313116B2 (en) 2003-10-07 2012-11-20 Amg Medical, Usa. Mobile support assembly
US8439376B2 (en) 2008-07-08 2013-05-14 Amg Medical, Usa. Mobile support assembly
US9173802B2 (en) 2003-10-07 2015-11-03 Amg Medical, Usa. Mobile support assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5419571A (en) * 1993-03-08 1995-05-30 Vaughan; Jack N. Wheel chair with provisions for patient walker
US5558358A (en) * 1995-06-19 1996-09-24 Johnson; Candace L. Combination wheelchair and walker
US5605345A (en) * 1993-10-21 1997-02-25 Brookefield Hunter Incorporated Wheeled apparatus for use as walker and wheelchair
US20050211285A1 (en) * 2004-03-26 2005-09-29 Cowie Ross L Mobility aiding device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5419571A (en) * 1993-03-08 1995-05-30 Vaughan; Jack N. Wheel chair with provisions for patient walker
US5605345A (en) * 1993-10-21 1997-02-25 Brookefield Hunter Incorporated Wheeled apparatus for use as walker and wheelchair
US5558358A (en) * 1995-06-19 1996-09-24 Johnson; Candace L. Combination wheelchair and walker
US20050211285A1 (en) * 2004-03-26 2005-09-29 Cowie Ross L Mobility aiding device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7837208B2 (en) 2003-10-07 2010-11-23 Phillip Minyard Willis Mobile support assembly
US7926834B2 (en) 2003-10-07 2011-04-19 AMG Medical, USA Mobile support assembly
US8313116B2 (en) 2003-10-07 2012-11-20 Amg Medical, Usa. Mobile support assembly
US9173802B2 (en) 2003-10-07 2015-11-03 Amg Medical, Usa. Mobile support assembly
US8439376B2 (en) 2008-07-08 2013-05-14 Amg Medical, Usa. Mobile support assembly
EP2172177A1 (fr) * 2008-10-02 2010-04-07 Gregor Horacek Aide à la marche pliable

Similar Documents

Publication Publication Date Title
US7540527B2 (en) Mobile support assembly
US7451992B2 (en) Mobile support assembly
US7926834B2 (en) Mobile support assembly
US9173802B2 (en) Mobile support assembly
US7837208B2 (en) Mobile support assembly
US20080129016A1 (en) Mobile support assembly
US8439376B2 (en) Mobile support assembly
US7066484B2 (en) Foldable mobility support device
US20070096436A1 (en) Mobile support assembly
US20070018426A1 (en) Mobile transport chair assembly
US9662264B2 (en) Ambulatory walker with seat
EP1915979B1 (fr) Ambulateur
US6338493B1 (en) Walker chair
EP2777677A1 (fr) Ensemble de support mobile
US8511694B2 (en) Reversible walker assembly
EP2090276B1 (fr) Ambulateur réglable en hauteur avec assise de transport
US20070283990A1 (en) Convertible wheelchair and walker
JPH03501935A (ja) 折り畳み式回転歩行器
US20060033297A1 (en) Collapsible walker for injured person
JP2004507336A (ja) 車輪付歩行器
WO2008103143A1 (fr) Ensemble formant support mobile
EP2777669A1 (fr) Ensemble de support mobile
US3442532A (en) Portable invalid wheelchairs
JP3657216B2 (ja) 手押車
JP3111185B1 (ja) 操作レバー装置およびこれを利用する軽車両

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07751447

Country of ref document: EP

Kind code of ref document: A1

DPE2 Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101)
NENP Non-entry into the national phase

Ref country code: DE

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
122 Ep: pct application non-entry in european phase

Ref document number: 07751447

Country of ref document: EP

Kind code of ref document: A1