Wheelchair Patents (Class 297/DIG4)
  • Patent number: 6164674
    Abstract: A multi-wheeled vehicle having adjustable wheelbase dimensions. The preferred embodiment is a wheelchair which affords on-the-fly adjustment of width. The linkage between the two side frames of the present wheelchair is of two cross members in a horizontal X configuration, one end of each cross member being pivotally affixed to one side frame on one side of the wheelchair, with the respective other end of each cross member being slidably engaged with the opposite side frame. The cross members are pivotally attached to each other at a point of intersection. This structure allows a wheelchair of the present design to be easily expanded and contracted in width during use, with the rider in-place, and avoids the necessity of incremental changes between uses, such as is required by wheelchairs of present design. Yet, such a wheelchair is structurally quite stable with respect to any tendency of the side frames to toe-in under torque applied by weight on the seat.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: December 26, 2000
    Assignee: Adorno/Rogers Technology, Inc.
    Inventors: Richard H. Rogers, Robert M. Huntress
  • Patent number: 6161238
    Abstract: A cushion comprising an orthotic base which has a flexible body of sufficient strength to support a user while conforming to the buttocks and legs of the user and pillars on the bottom of the base to support the same and being of desired height and positioning to position the user in a desired position. The disclosure shows a preferred composite cushion comprising the orthotic base; a foam top on the base with a T-shaped cutout at the rear to accommodate an air cell pad; a balance foam underpad of smaller front to rear measurement than the base and movable from the front to the rear of the base to incline the user in a desired front to rear positioning and from left to right to position the user in a left to right direction; and a cover enclosing the base, the foam top, the air cell pad and the underpad. Removable support members are attached to the pillars beneath the orthotic base at predetermined locations to shape the top surface when a load is applied.
    Type: Grant
    Filed: August 21, 1998
    Date of Patent: December 19, 2000
    Inventor: Robert H. Graebe
  • Patent number: 6158810
    Abstract: An improved chair back tilt apparatus for a wheelchair. The apparatus includes a seat and a back support pivotally coupled to the seat. A backrest is slidably coupled to the back support and coupled to the seat by a rigid L-shaped support. A linear motion actuator is secured between the seat and the back support to recline the seat. As the seat reclines, the L-shaped support pulls the backrest downward. The L-shaped support also forces the backrest upward as the seat is returned to its original position thereby substantially eliminating back shear associated with prior art back tilt systems.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: December 12, 2000
    Inventor: Robert Galloway
  • Patent number: 6155583
    Abstract: A wheelchair which enables the user on the wheelchair to remove or reinstall larger diameter wheels without jacking up the entire structure. The wheelchair includes a seat, legs supporting the seat, a caster having a holder and a smaller diameter wheel rotatably installed at a center of the bottom surface of each of the respective legs, axle supporting levers reclinably mounted on both sides of the seat and a wheel axle for the respective larger diameter wheel, one end of which is removably installed on one end of the respective axle supporting lever. The other end of the axle supporting lever functions as a handle for reclining the lever. The diameter of the larger diameter wheel is larger than the diameter of the smaller diameter wheel.
    Type: Grant
    Filed: December 29, 1998
    Date of Patent: December 5, 2000
    Inventor: Shozo Koike
  • Patent number: 6154899
    Abstract: A chair apparatus includes a base frame, an intermediate frame coupled to the base frame, and a resident support frame including a back section, a seat section, and a leg section pivotably coupled to the base frame and the intermediate frame by a plurality of links to permit the support frame to move from a chair position to a flat position.
    Type: Grant
    Filed: October 19, 1998
    Date of Patent: December 5, 2000
    Assignee: Hill-Rom, Inc.
    Inventors: Jason C. Brooke, Kendall O. Shows, James F. Thomas, Michael J. Mutka, William S. Larisey, Jr., Reza Hakamiun, Charles M. Stout, Brian L. Crosley
  • Patent number: 6152478
    Abstract: A wheelchair includes a base with two pairs of wheels connected to two sides of the base. A seat is connected to the base and a backrest is connected to the rear end of the seat. A seat shaft is located below the seat and a backrest supports the backrest. Two identical transmitting systems are connected between the seat shaft and the backrest shaft, wherein the seat shaft is driven by a motor. Each of the seat shaft and the backrest shaft has a rotatable member and a fixed member co-axially mounted to one of two ends thereof. A connecting tube is connected between the rotatable member on the seat shaft and the fixed member on the backrest shaft. Each of the rotatable member and the fixed member has arciform slots defined therein so that a chain is engaged with the arciform slots and passing through the connecting tube. The seat can be pivoted to an upright position to assist the disable person to stand up by rotating the rotatable members.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: November 28, 2000
    Inventor: Chin-Lien Hung
  • Patent number: 6142350
    Abstract: A foldable shopping bag support apparatus and method for removably supporting a shopping bag on the wheelchair. A mounting sleeve is telescopically mounted to the armrest of the wheelchair. A backstop is removably secured to the mounting sleeve and is braced against the frame of the wheelchair. A shopping bag support frame is pivotally mounted to the backstop and includes a pair of support arms from which the shopping bag is suspended. A pair of sockets on the shopping bag telescopically receive the support arms.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: November 7, 2000
    Inventor: Myron C. Alexander
  • Patent number: 6135475
    Abstract: A collapsible wheelchair is disclosed. The wheelchair includes a first wheel and a second wheel secured on opposites sides of a central support frame designed to support a seat member. The first wheel and the second wheel define a space within the circumference of each wheel. The central support frame includes a first frame member connected to the first wheel such that the first frame member may selectively move relative to the first wheel and a second frame member connected to the second wheel such that the second frame member selectively moves relative to the second wheel. A connecting member connects the first frame member to the second frame member in a manner permitting the first frame member and the second frame member to be selectively moved toward and away from each other, thereby, permitting the collapse of the wheelchair. The wheelchair further includes at least one guide wheel coupled to the central support frame for supporting the wheelchair.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: October 24, 2000
    Inventors: Richard Brown, Edward L. Meador, David E. Hume
  • Patent number: 6129415
    Abstract: An improved wheel chair leg rest shock absorption apparatus. The apparatus includes a frame having a telescoping linkage slidably received therein. A leg rest is coupled to the linkage and means are coupled to the linkage for extending and retracting it. A spring assembly is coupled to the leg rest to absorb shock force applied to the leg rest and prevent deformation and damage to the apparatus. The spring assembly absorbs shock regardless of whether the leg rest is raised or lowered.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: October 10, 2000
    Inventor: Robert Galloway
  • Patent number: 6113189
    Abstract: A reclining seat back replaces a canvas seat back in a wheelchair frame. The reclining back has left and right brackets which attach to existing upright back supports of the wheelchair frame. A reclining back pivoted to the brackets is adjustable to a desired recline position.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: September 5, 2000
    Assignee: Lenjoy Engineering, Inc.
    Inventors: John Bennett, Willis C. Bradley
  • Patent number: 6105706
    Abstract: A personal mobility vehicle or powered wheelchair comprising a seat operatively mounted to a carriage by a seat positioning assembly including a linear positioning assembly to selectively position the seat longitudinally relative to the carriage to maintain the weight distribution of the personal mobility vehicle and occupant between the front and rear of the personal mobility vehicle within a predetermined weight distribution pattern during operation of the personal mobility vehicle to enhance the static and dynamic stability thereof.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: August 22, 2000
    Assignee: Hoveround Corporation
    Inventor: Stanley C. Cooper
  • Patent number: 6099021
    Abstract: An accessory is provided for supporting a four-wheeled wheel-chair in a stable position in which it is tilted backwards and thus enables a disabled user to assume a relaxing recumbent posture. The accessory having a swing leg (3) that swings freely in the vertical plane of symmetry passing through the longitudinal axis of the wheelchair about a perpendicular and horizontal pivot rod (4) substantially located at the top of the back rest (9) between the two side frame posts that support the back rest (9), via rapid or permanent fastening elements (5, 6, 7, 8). The lower portion of the swing leg (3) advantageously has an adjustable length and is provided with a stabilizer foot (10).
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: August 8, 2000
    Inventor: Robert Benoit
  • Patent number: 6092822
    Abstract: A wheelchair includes a support frame and wheels and casters rotatably cocted to the support frame. A rotatable steering member is slidably connected to a caster swivel support frame for steering the wheelchair. The wheelchair also includes a collapsible seat frame as well as a pedal operated transmission to drive the wheels of the wheelchair. A single brake lever brings two brake elements into engagement with the wheels to lock the wheelchair against rolling movement.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: July 25, 2000
    Assignee: Jim Roger Salmon and Chris Phillip Berryhill, A California Partnership
    Inventor: Jim Roger Salmon
  • Patent number: 6089593
    Abstract: A chair for supporting a patient above a floor comprising a base frame, an intermediate frame coupled to the base frame for pivoting movement relative to the base frame about a generally horizontal transverse axis thereon and wherein the intermediate frame is lockable relative to the base frame. An articulated patient support including longitudinally spaced back and seat sections mounted to the intermediate frame for movement relative to one another and relative to the intermediate frame and wherein the back and seat sections are movable relative to the base frame about the horizontal transverse axis when the intermediate frame is locked relative to the base frame.
    Type: Grant
    Filed: February 10, 1997
    Date of Patent: July 18, 2000
    Assignee: Hill-Rom, Inc.
    Inventors: Thomas W. Hanson, John D. Vogel, Steven V. McCaig, Jack C. Newkirk, Donald E. Smith, Jonathan D. Turner, Terence M. Duncan, Gary S. Siegle, Gregory J. Figel, Jeffrey A. Heyser, William M. Blyshak, Michael P. Bish
  • Patent number: 6050356
    Abstract: A wheelchair includes an upper structure A and lower structure B which can be freely assembled and separated. Upper structure A includes a seat, back rest, seat rail, cross member, cross member and a subframe. Electrical equipment including a control unit and battery, etc., is housed inside a housing mounted on the bottom part of seat. A motor is supported under the cross member. The lower structure includes the left and right pair portions of a main frame, front wheels, drive wheels and hand rims. Upper structure A can be separated and removed from lower structure B by folding down the back rest and removing the upper structure A. The output axis is removed from the axle stay by moving the motor towards the center of the wheelchair body. A housing cover is fitted to the rear face of a base plate provided on a seat of the wheelchair. A freely opened and closed lid is provided for the opening provided on the front portion.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: April 18, 2000
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Toru Takeda, Kaoru Hatanaka
  • Patent number: 6050582
    Abstract: Disclosed is a cross-strut arrangement for a folding roller-mounted chair having at least two struts connected to one another in a crosswise manner via a cross-strut articulation. The struts each are designed such that they can be changed in length, telescopically, for adjusting the seat width. At the top end of each strut a seat profile is located in the longitudinal direction of the folding roller-mounted chair and transverse to the strut for fixing the seat surface is adjustable to increase the seat depth.
    Type: Grant
    Filed: September 25, 1998
    Date of Patent: April 18, 2000
    Assignee: Otto Bock Orthopaedische Industrie Besitz-und Verwaltungs- Kommanditgesellschaft
    Inventor: Gregor Horacek
  • Patent number: 6048031
    Abstract: A reclining backrest system for a person in a wheelchair having a seat and a wheelchair frame which includes a pair of substantially vertical members, comprising a backrest, brace members and a cushion. The backrest is substantially rigid and has longitudinal and lateral edges. The lateral edges include a lower edge. The brace members have a certain amount of flexibility and are affixed to the lower edges of the backrest to the pair of vertical frame members.An improved reclining backrest system comprises a hinge mechanism and a lengthened backrest, the hinge mechanism affixed to the frame, below the seat, and the backrest.
    Type: Grant
    Filed: January 28, 1999
    Date of Patent: April 11, 2000
    Assignee: Skil-Care Corp.
    Inventor: Stephen Warhaftig
  • Patent number: 6042189
    Abstract: A restraint free wheelchair system is provided including a wheelchair having a pile fastener attached thereto. A piece of clothing is included with a pile fastener attached thereto for releasably securing to the pile fastener of the wheelchair.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: March 28, 2000
    Inventor: Mary C. Wellman
  • Patent number: 6036012
    Abstract: An apparatus for storing a wheelchair is provided. The apparatus includes a substantially rigid container dimensioned to receive a wheelchair including a first section and a second section. The first section includes a first end, a first wall extending from the first end, a second wall opposite the first wall, a first side panel extending from the first end positioned between the first and second walls and a second side panel opposite the first side panel. The second section includes a first end, a first wall extending from the first end, a second wall opposite the first wall, a first side panel extending from the first end and positioned between the first and second walls and a second side panel opposite the first side panel. The first section is releasably coupled to the second section to form an interior region for receiving a wheelchair.
    Type: Grant
    Filed: June 9, 1997
    Date of Patent: March 14, 2000
    Assignee: Haseltine Systems, Inc.
    Inventors: Florence P. Haseltine, George DeBush
  • Patent number: 6036271
    Abstract: A seating system is designed for self-adjusting pressure relief for use with wheelchairs and other generally confined seating arrangements. One or more support chambers filled with resilient foam and a fluid such as air are arranged on an upper support surface. A self-adjusting reservoir is provided and arranged in fluid communication with the chamber. A constant force spring cooperates with a pivoting plate arrangement and acts on the reservoir so as to balance fluid pressure between the reservoir and the support chamber with a patient received thereon. In some embodiments, three fluid/resilient foam chambers may be provided for independent operation with three respective adjustable reservoirs. In other embodiments, fluid filled chambers may be operatively associated with respective reservoirs and pivoting actuation plates specially adapted to fit below a wheelchair seat without interfering with the wheelchair support structure, or specially adapted to be carried in a pack on the wheelchair seat back.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: March 14, 2000
    Assignee: Span-America Medical Systems, Inc.
    Inventors: John W. Wilkinson, Richard W. Raburn
  • Patent number: 6032976
    Abstract: One aspect of the present invention is a wheelchair that has a tiltable seat The wheelchair comprises a base frame, a seat frame, a plurality of pivotable side connection members, and at least one drive member. The base frame comprises a plurality of substantially parallel base frame side members, each supporting a longitudinally movable connection. A longitudinally movable support member is slidably connected at each end to the longitudinally movable connection. The seat frame is tiltable relative to the base frame. The seat frame comprises a plurality of substantially parallel seat frame side members, each having a front end and a back end, The back end of each of the seat frame side members is connected to the longitudinally movable support member. The pivotable side connection members each have an upper end and a lower end.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: March 7, 2000
    Assignee: Sunrise Medical HHG Inc.
    Inventors: Paul C. Dickie, Dalva R. Alexander
  • Patent number: 6015394
    Abstract: The present invention involves an apparatus for stimulating skin tissue of a nonambulatory individual in a wheelchair or other mobile apparatus. The pouch of the present invention contains a fluid medium which is connected to an agitator which generates turbulence and disturbances within the fluid medium. For example, a vibrator may be placed adjacent to the pouch and vibrate the fluid medium. These motions are transmitted through the fluid medium to stimulate the skin and underlying tissue which is resting on the pouch. The pouch may be connected to the support bars of a wheelchair, or have arms to extend around and attach to a chair seat in a scooter. A pocket of the pouch serves to hold the agitator in contact with the fluid, e.g., water, so that the fluid is adequately turbulated and disturbed to have a stimulating effect on the body tissue.
    Type: Grant
    Filed: June 27, 1994
    Date of Patent: January 18, 2000
    Inventor: Carol L. Young
  • Patent number: 5984334
    Abstract: An automatic braking wheelchair having an automatic braking assembly which automatically locks one or both wheels of a wheelchair when the patient attempts to rise.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: November 16, 1999
    Inventor: Grady A. Dugas
  • Patent number: 5971417
    Abstract: A back rest assembly (22) including a back shell (24), a back rest cushion (26), and a mounting assembly (28) for securing back shell (24) to upright posts (16, 18) that form part of the frame of a wheelchair (10). Mounting assembly 28 includes a mounting block (30), a pair of resilient pads (32), a fastener band (34), a barrel nut (38), and a pivot pin (36). Mounting assembly (28) pivotally supports back shell (24) between upright posts (16, 18) at two pivot points on the posts. Mounting assembly (28) is adjustably secured on each post (16, 18) so that the pivot points can be positioned to align with a person's pelvis.
    Type: Grant
    Filed: November 12, 1996
    Date of Patent: October 26, 1999
    Assignee: Sunrise Medical HHG Inc.
    Inventors: Peter A. Swisshelm, Douglas H. Munsey
  • Patent number: 5966750
    Abstract: A chair for washing disabled individuals has wheels as well as a pair of handles for guiding the chair. The wheels are provided with locking mechanisms, and shields which prevent dirt and scum from depositing on the wheels. The chair is equipped with a rotatable seat which allows a caregiver to swivel a disabled individual, and with a retractable seat belt for restraining a disabled individual. The seat can be locked in any of a multiplicity of positions. The chair is further equipped with two armrests and a footrest which can be pivoted out of the way of a caregiver.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: October 19, 1999
    Inventor: Margaret Polanco
  • Patent number: 5930152
    Abstract: A device for positioning a human body in a seat, wheelchair or other support is provided. The device enables a user to modify and adjust various components to position the seat to aid the posture of the user, by taking various measurements via sensors and controlling the position of the components to achieve an optimum configuration of the components to support the user. A computer can automatically make the adjustments and can monitor multiple seats. The seats can be truck, car or airplane seats.
    Type: Grant
    Filed: May 10, 1996
    Date of Patent: July 27, 1999
    Assignee: Semap S.A.R.L.
    Inventors: Daniel Dumont, Alain Laferriere, Eric Guerard
  • Patent number: 5921258
    Abstract: A detachable and collapsible weather shield for a wheelchair may be user-disposed in a user-selected orientation. The weather shield includes first and second generally inverted "U"-shaped frames, in which the distal leg ends of the second frame are pivotally joined by a coupler to a leg portion of the legs of the first frame. A flexible moisture resistant canopy extends over at least the top portion of the frames and preferably also extends downward to also cover a portion of the legs. A releasable pivotable anchor is secured to one and preferably both wheelchair push arm regions, and permits releasably and rotatably attaching the distal leg ends of the first frame to the wheelchair. The anchor permits user-adjustment of the relative angular orientation of the first frame (and thus of the weather shield) and/or the vertical height (including complete removal) of the weather shield relative to the ground. The anchor unit may be manually operable, or may be motorized.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: July 13, 1999
    Inventor: Wade Francois
  • Patent number: 5904398
    Abstract: A wheelchair having an ergonomically designed seat assembly is provided. The seat assembly includes a backrest subassembly connected to a seat frame The backrest subassembly includes a backrest frame, at least one resilient pivotal member connected to the backrest frame, and a backrest connected to the at least one resilient pivotal member such that the backrest is capable of resilient pivotal flexing about a transverse horizontal axis. A seat is pivotally connected to the seat frame such that the seat is capable of pivotal tilting about a transverse horizontal axis relative to the seat frame and independent of the backrest subassembly. At least one resilient member is disposed between the seat frame and the seat so as to allow resilient relative pivotal tilting therebetween. Two leg rests are pivotally connected to the seat frame such that the leg rests are capable of pivoting about a transverse horizontal axis relative to the seat frame.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: May 18, 1999
    Inventor: Susan Farricielli
  • Patent number: 5884929
    Abstract: A wheelchair construction is disclosed for facilitating transfer of a person to and from the wheelchair. The wheelchair includes a mobile frame, a chair assembly for supporting a person in a sitting position, and mechanism shiftably supporting the chair assembly on the frame. The mechanism supports the chair assembly for movement between a transport position, in which the chair assembly is positioned generally over the frame, and a transfer position, in which the chair assembly is positioned laterally outwardly from the frame.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: March 23, 1999
    Inventor: David W. Kincaid
  • Patent number: 5865504
    Abstract: A reclining backrest system for a person in a wheelchair having a wheelchair frame which includes a pair of substantially vertical members, comprising a backrest, brace members and a cushion. The backrest is substantially rigid and has longitudinal and lateral edges. The lateral edges include a lower edge. The brace members have a certain amount of flexibility and are affixed to the lower edges of the backrest the to the pair of vertical frame members. The cushion is supported against the front portion of the backrest, and provides a substantially vertical, cushioned, backrest. The cushion comprises a plurality of longitudinally extending pockets, each pocket have at least one opening, disposed against the front portion of the backrest, and a plurality of removable pads adapted for insertion within the pockets, and for providing individual cushioned back surfaces.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: February 2, 1999
    Assignee: Skil-Care Corp.
    Inventor: Stephen Warhaftig
  • Patent number: 5857688
    Abstract: A compact collapsible wheelchair comprises first and second side frames, wherein each side frame includes a seat support rod and wheel support member. A collapsible support framework is operatively attached to the first and second side frames and includes a first auxiliary seat support member and a second auxiliary seat support member positioned relative to a flexible seat connected between each seat support. The flexible seat is urged into engagement with the first and second auxiliary seat support members in response to the bodyweight of the user. At least one hinged cross brace extends between the first and second side frames for maintaining the side frames in spaced relationship when the wheelchair is in the open position. A first and second main wheel are attached to the wheel support members on the first and second side frames respectively. First and second smaller swivel wheels are attached to the wheel support member on the first side frame and on opposite sides of the first main wheel.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: January 12, 1999
    Inventor: Judson S. Swearingen
  • Patent number: 5848824
    Abstract: A wheelchair backrest and seat is mounted on chair tubes that form part of the wheelchair frame, using suspension hooks adapted to partially surround the chair tubes. Special abutment devices are slidably mounted on the chair tubes to prevent the hooks from shifting on the chair tubes. Each abutment device has a latch element that can be projected over the associated hook to prevent the hook from movement away from the chair tube.
    Type: Grant
    Filed: May 19, 1997
    Date of Patent: December 15, 1998
    Inventor: Paul Mocur
  • Patent number: 5842745
    Abstract: An improved wheelchair and upper body support for supporting an occupant of the wheelchair. The wheelchair has two spaced-apart armrests for supporting the occupant. An upper body support is mounted on each of the spaced-apart armrests and includes a base member that has a front end and a back end. The upper body support further includes a padded backwall that is attached to the base member and that provides support for the occupant when an arm of the occupant is leaned thereon. The upper body support further includes a padded sidewall that is attached to the base member and provides support for the occupant when the occupant's arm is leaned thereon. A mechanism is also provided for securing each upper body support to one of the spaced-apart armrests. The padded backwall is removably attached to the base member so that the occupant may operate the wheelchair when the padded backwall is removed.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: December 1, 1998
    Assignee: Robert L. Kelly
    Inventors: Robert L. Kelly, Wilford L. Kelly
  • Patent number: 5833318
    Abstract: A wheelchair support accessory for providing added comfort to a person confined to a wheelchair includes a support board having a generally rectangular configuration. The support board has a long top edge, a long bottom edge and short opposed side edges. The long bottom edge has a pair of upwardly extending recesses formed therein disposed inwardly of the opposed short side edges. The recesses are spaced so as to engage an existing leg rest frame of a wheelchair.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: November 10, 1998
    Inventor: Tony A. Knight
  • Patent number: 5799964
    Abstract: An armrest assembly for a wheelchair which includes a seat, two support braces, two front legs, and two rear legs. The armrest assembly includes at least one box placed on an associated support brace. At least one fastener is secured to a front end of an associated support brace. At least one first tube has an upper end fixedly mounted on a front end portion of the box and a lower end detachably engaged with the fastener. At least one second tube has an upper end fixedly mounted to a rear end portion of the box and a lower end pivotally engaged with an associated rear leg. At least one pivot base is secured to the front end portion of the box. At least one pivot block is pivotally mounted on the pivot base. At least one pivot arm is pivotally engaged with an extension of the pivot block and is releasably mounted in a chamber of the box. At least one holding table is fixedly mounted on the pivot arm and is releasably received in the chamber.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: September 1, 1998
    Inventor: Ya-chen Chao
  • Patent number: 5785384
    Abstract: A device for an adjustable chair, where the back of the chair, at a first mounting site on each side thereof, is pivotally connected to respective side members of the chair, and at a second mounting site forms a hinged connection with a rear part of the chair set frame, where the chair seat frame, at a front mounting site on each side thereof, is slidably connected to a respective side member along a front guide which forms a part of the side member. The first mounting site on the chair back is designed to slide along a rear, forward and downward inclining guide in the side member, and the seat frame has on each side a rear mounting site between said front mounting site and said second mounting site for the chair back, said rear mounting site forming a slidable connection with a guide in each respective side member, which is located between the front and rear guides when seen in the longitudinal direction of the side member which is either horizontal or inclines slightly forward and upward.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: July 28, 1998
    Assignee: Handicare Industri A/S
    Inventor: Morten Sagstuen
  • Patent number: 5743544
    Abstract: An improved wheelchair wheel and hub assembly is described that interposes reduction gearing between the handring or rotatable hand wheel and the drivewheel of the assembly. This gearing provides some mechanical advantage to users who may lack sufficient strength to propel themselves in a conventional wheelchair, especially in a home environment. A single speed assembly is described which is operated conventionally by rotating handrings either forward or rearward to produce a corresponding rotation of the drive wheel but, unlike conventional wheels, a complete revolution of the handring results in only a partial revolution of the drive wheel. In the hub of the assembly is a wheel locking mechanism which enables the wheel to be easily and positively locked for the safety of the user, preventing rotation of the wheel in either direction. Additionally, a ratcheting mechanism is incorporated into the hub design which can be engaged to allow forward rotation but prevent rearward rotation of the drive wheels.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: April 28, 1998
    Inventor: Michael J. Weaver
  • Patent number: 5725275
    Abstract: A new Chair for Disabled for allowing a user to use a toilet without having to be moved from the Chair for Disabled. The inventive device includes a seat with four downwardly depending vertical legs having a caster on the end of each leg. The seat has a centrally positioned opening for toilet use. A retractable central seat panel is slidably mounted to the bottom of the seat. A handle or a cable winch attached to the retractable central seat panel allows the retractable central seat panel to be positioned beneath the centrally positioned opening.
    Type: Grant
    Filed: January 16, 1997
    Date of Patent: March 10, 1998
    Inventor: Lenora Wigfall
  • Patent number: 5713591
    Abstract: Multipositioning components for a wheelchair including hand, arm and elbow plates and leg, foot and heel components which are form fitted to a patient. And as components of repositionable hand, arm and elbow subassemblies the plates can be extended and aligned for a particular patient or removed and then replaced without disturbing the prior adjustment and alignment of the subassembly.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: February 3, 1998
    Inventors: Gregory Zarkhin, Steve A. Fine
  • Patent number: 5701968
    Abstract: A multipositioning power mobility aid for physically challenged children is provided. The power mobility aid provides a transition to a power wheelchair. The power mobility aid includes a multipositioning main frame that allows a child to be placed in a sitting, semi-standing or standing position without requiring multiple adjustments. The back support rotates to a nonsupporting position to facilitate placing a child in or removing a child from the power mobility aid. The back support then locks into an upright supporting position after the child is positioned in the power mobility aid. The power mobility aid includes an adjustable arm that supports the user-operable input device in multiple locations.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: December 30, 1997
    Assignee: Licile Salter Packard Children's Hospital at Stanford
    Inventors: Christine Wright-Ott, John F. Wadsworth, Gerald R. Harris
  • Patent number: 5685719
    Abstract: A system for rehabilitating a speech impaired individual confined to a wheelchair is disclosed. The system utilizes an arm movement actuator attachment which is secured to the arm rest structure of the wheelchair through a rotatable arm support platform mounted on juxtaposed, upper and lower slide rod assemblies providing X- and Y-axis movement for the rotatable platform. The platform is configured to fully support the individual's forearm and elbow to enable the individual suffering from minimal upper extremity mobility to physically contact a touch screen for enablement of interaction with a computer to communicate and therefore socialize with others.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: November 11, 1997
    Assignee: Frank Bressler Rehabilitation Research, Inc.
    Inventor: John Willard Bressler
  • Patent number: 5681049
    Abstract: A portable wheelchair including a seat assembly having a seat and a back rest, as well as a footrest having at least one guiding wheel. The seat assembly and the footrest are selectively secured between a first wheel and a second wheel, the first wheel including a first tire mounted on a first rim and the second wheel including a second tire mounted on a second rim. The seat assembly is secured to the first wheel by a first cross-brace and the seat assembly is secured to the second wheel by a second cross-brace. The first cross brace is coupled to the first wheel by a first bearing assembly slidably mounted to the first rim and a second bearing assembly slidably mounted to the first rim, wherein the first bearing assembly and the second bearing assembly are connected by a first spoke member.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: October 28, 1997
    Inventor: Il Yoo Kim
  • Patent number: 5678798
    Abstract: A swing support bracket assembly for mounting support pads to wheelchairs. The assembly includes a housing, an axle mounted for rotation in the housing, a toggle pivotally mounted in the housing and having a tapered protrusion adapted to engage a cooperating tapered recess in the axle. The support pad may be mounted either directly or by a number of adjustable clamps and support rods to the housing. In another embodiment it is mounted by such rods and clamps to the axle.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: October 21, 1997
    Inventor: Roy M. Little
  • Patent number: 5673967
    Abstract: An apparatus for supportably attaching a leg rest to a wheel chair comprising at least one seat frame member and a telescoping linkage slidably received within the seat frame member such that the linkage may be retracted and extended along a telescoping path parallel to a length of the seat frame member. The leg rest is supportably and pivotally attached to a forward end of the telescoping linkage at a hinge point wherein the hinge point is positioned proximate the knee of the user. The leg rest may be pivoted about the hinge point upward to a generally reclined horizontal position when the telescoping linkage is extended and downward to a generally vertical position when the telescoping linkage is retracted.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: October 7, 1997
    Inventor: Patrick L. Wempe
  • Patent number: 5674041
    Abstract: A method and vehicle preferably a wheelchair (10) for transporting and transferring an invalid person is described. The wheelchair has first and second frames (12 and 48) with drive wheels (18) between which is provided a chair (82) or support (83). The first frame has top and bottom sliding mechanisms (34 and 36) which are mounted by I-beam extensions (38 and 40) to the bars (24 and 26) of the first frame. The second frame has top and bottom rails (54 and 56) which are slidably connected to the sliding mechanisms of the first frame. The rails have slots (78) through which extend the center portions (38C and 40C) of the extensions which allow the first frame to move along the length of the rails. The bottom rails have front wheels (60), intermediate wheels (68) and stabilizing wheels (70). The chair is connected to the second frame by belts (84) and ratchets (86) and has a lifting system (90).
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 7, 1997
    Assignee: The Board of Trustees operating Michigan State University
    Inventors: Donald J. Smith, Jr., Patrick J. Atkinson, Melissa L. Evans, Shawn P. Londo, William J. Ryan
  • Patent number: 5669086
    Abstract: Mobile medical lifting apparatus comprising a mobile support means having wheels, castors or rollers, which mobile support means supports or provides a mounting for a lifting device comprising a stack of inflatable bags for raising a seat or platform supported by the lifting device, an inflatable bag at the bottom of the lifting device is actuable to raise the wheels, castors or rollers off the ground to enable the wheels, castors or rollers, and, optionally, associated parts of the mobile support means, to be removed so that the lifting device can lower the seat or platform to very close to the ground to minimize the effort required to move a fallen person onto the platform.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: September 23, 1997
    Assignee: Mangar International Limited
    Inventor: David Edmund Talbot Garman
  • Patent number: 5669620
    Abstract: The invention is to a wheel chair assembly and a seat transfer mechanism that permits the person on the seat and the seat to move laterally. The seat is on a platform that has a base and first and second laterally movable platforms. The wheel chair seat is latched to the top one of the two laterally movable platforms. The bottom of the seat has two tracks that are matched to and engage a track on a fixed seat frame such as a seat on an aircraft.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: September 23, 1997
    Inventor: Dennis L. Robbins
  • Patent number: 5667235
    Abstract: Multi-adjustable wheelchair with adjustability features which accommodate the physical size and comfort of the wheelchair user is disclosed and claimed. The wheelchair includes (1) wheelchair frame width adjustment, (2) wheelchair rear axle position adjustment, (3) wheelchair seat height and bucketing angle adjustment, (4) wheelchair seat base width and length adjustment, (5) wheelchair seat back angle adjustment and (6) wheelchair seat fore and aft position adjustment.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: September 16, 1997
    Assignee: TekSource, LC
    Inventors: Tony M. Pearce, Terry V. Pearce
  • Patent number: 5664266
    Abstract: A combination patient transporter and chair, comprising a base frame extending in a horizontal plane and having a front and rear portion. Wheels are mounted on the base, and a vertically adjustable first post is rigidly connected to the base frame, spaced from the rear portion and near the front portion. The first post includes mounting means spaced vertically from the base frame. A removable chair is provided having a backrest. The mounting means includes cantilevered connecting members mounting the chair in a cantilevered manner from the first post towards and over the rear portion. A vertically adjustable footrest means is provided over the base and is adjustable between an upper position and a lower position. A table platform is spaced forwardly and above the chair.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: September 9, 1997
    Assignee: McGill University
    Inventors: Glen Williams, Arnold Zidulka
  • Patent number: 5659910
    Abstract: A convertible wheel chair/bed for paralyzed invalids comprises a support on which the invalid rests, the support comprising a plurality of support segments which define a support surface. The support segments can be moved simultaneously so the parts of the skin which were in contact with some support segments are relieved from pressure and exposed to air so that perspiration on that portion of the skin can evaporate, while other parts of the skin of the invalid are engaged and supported by support segments.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: August 26, 1997
    Inventor: Norman Weiss