Fabric Bottom And Back Patents (Class 297/45)
  • Patent number: 5718473
    Abstract: A folding chair comprises a front, scissors-like X-structure formed by two pivotally coupled rigid members, the lower ends of which form front feet and the upper ends of which form front seat corners of the chair. Rearward the scissors structure, an inverted Y-structure includes a pair of downwardly depending rear legs diverging from a central hinge to form rear feet and a stile pivotally coupled to the hinge and extending upwardly opposite the legs. Two spindles link the front feet to an apex coupled to the hinge by a tether, and two lateral braces link the rear feet to the front seat corners, the braces and the spindles being pivotally coupled together where they cross. The stile opposite the hinge includes a transverse rail from which is suspended a hammock seat extending downward to the front seat corners on the scissors structure. The chair folds to a tight bundle for carrying, the hammock seat doubling as a shoulder sling.
    Type: Grant
    Filed: December 13, 1995
    Date of Patent: February 17, 1998
    Inventor: Robert W. Lynch, Jr.
  • Patent number: 5709428
    Abstract: The present invention provides collapsible folding furniture that overcomes the limitations of past furniture configurations to achieve strong and lightweight furniture structures that have full size features and comfort but that are extremely compact, easy to set up, and that have no loose parts. A collapsible furniture support structure has a support surface extending between at least two side braces, and at least two leg supports for maintaining the support surface in a substantially horizontal position. A separate socket joint is provided that corresponds to each leg support. Each socket joint is slidingly engaged with an upper end of a corresponding leg support and engaged with an end of a side brace. A separate elastic cord is provided for each leg support, with each elastic cord connected between a corresponding leg support and socket joint.
    Type: Grant
    Filed: May 20, 1996
    Date of Patent: January 20, 1998
    Assignee: Massachusetts Institute of Technology
    Inventor: Joel F. Hugghins
  • Patent number: 5570928
    Abstract: A multiple folding chair arrangement particularly concerned with 2, 3, 4, 5 and 6 chair multiples and comprising three or more rigid vertical support frames defining the sides of two or more chairs and having front and rear edges, two pairs of diagonally crossed members located, respectively, between the front and rear edge regions of each frame, each one of the pair of members being pivotally connected adjacent a lower end to a separate one of an adjacent frame and being pivotally joined to the other member at or near its midpoint, the upper ends of said two pairs of members defining a plane for a seat when the chair arrangement is in an erected seating configuration, and a brace pivotally connected adjacent to the upper ends of each member and pivotally connected to the adjacent support frame, the arrangement including hand grips associated with the upper end of one or more of each pair of members located at the rear of the chairs to enable the chairs to be folded whereby the frames are brought together int
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: November 5, 1996
    Assignee: Bermere Pty. Ltd.
    Inventors: Bryan F. Staunton, Rick J. Maynard
  • Patent number: 5536063
    Abstract: A recreational chair may be assembled for a seated chair condition or disassembled or folded to a collapsed compact condition for easy handling and storage purposes. Rods form a square seat frame and are pivotably connected at their respective median points whereby the rod members may be folded in half for the compact storage condition. Each rod is bifurcated and the bifurcated parts constitute a snap-latch device whereby in a closed position, the device is locked for the seating condition and in an open position, the device is unlocked for the collapsible storage condition. Leg members and back frame members of the chair are constructed of hollow tubes which are made of a durable rigid lightweight material such as plastic, aluminum or steel. Supporting seat and back canvas swatches are mounted on their respective frames and each of the swatches may be compactly rolled for storage.
    Type: Grant
    Filed: January 4, 1995
    Date of Patent: July 16, 1996
    Inventor: C. Cecelia Cable
  • Patent number: 5507548
    Abstract: A collapsible chair includes a pair of intercrossing frames pivotally interconnected at front and rear pivot points. A pair of curved back support rods extend upwardly from the frames. A back rest is secured on and between the curved back support rods and a seat extends perpendicularly from the bottom of the back rest when the chair is in the upright condition. Each of the back support rods is rotatably secured to the intercrossing frames so that the back support rods can be positioned side-by-side when the chair is in the folded condition.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: April 16, 1996
    Inventor: Matthew D. Marhefka
  • Patent number: 5499857
    Abstract: A folding chair comprises a front, scissors-like X-structure formed by two pivotally coupled rigid members, the lower ends of which form front feet and the upper ends of which form front seat corners of the chair. Rearward the scissors structure, an inverted Y-structure includes a pair of downwardly depending rear legs diverging from a central hinge to form rear feet and a stile pivotally coupled to the hinge and extending upwardly opposite the legs. Two spindles link the front feet to an apex coupled to the hinge by a tether, and two lateral braces link the rear feet to the front seat corners, the braces and the spindles being pivotally coupled together where they cross. The stile opposite the hinge includes a transverse rail from which is suspended a hammock seat extending downward to the front seat corners on the scissors structure. The chair folds to a tight bundle for carrying, the hammock seat doubling as a shoulder sling.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: March 19, 1996
    Inventor: Robert W. Lynch, Jr.
  • Patent number: 5496094
    Abstract: A chair is provided which includes a first floor and seat engaging frame member and a second floor and seat engaging frame member pivotally joined to one another to permit collapsing of the chair from an erected seating position to a substantially coextensive position. In addition, the first and second frame members each include a substantially straight bight end portion angled with respect to the respective frame members. Also included is a seat surface-providing member of a shape having a first pocket for engaging and enclosing an extremity of the first bight of the first frame member and at a second end a second pocket for engaging and enclosing an extremity of the second bight of the second frame member. The first and second bight end portions provide the only support for the seat-supporting member.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: March 5, 1996
    Assignee: Cosco, Inc.
    Inventors: Robert A. Schwartzkopf, Richard E. Cone
  • Patent number: 5470039
    Abstract: A foldable cradle for supporting an infant seat. The foldable cradle includes a pair of spaced, generally parallel, cross-members, each cross-member having a leg depending from one end thereof and a second leg depending from the other leg thereof. The first legs are pivotally connected at a point intermediate the first legs and the second legs are pivotally connected at a point intermediate the second legs so that a frame is formed having an X-shape when viewed from the side in an open position. In the open position, the cross-members are each at a fixed vertical elevation above a planar surface defined by the opposite end of the legs. The foldable cradle includes means for supporting an infant seat.
    Type: Grant
    Filed: May 17, 1994
    Date of Patent: November 28, 1995
    Assignee: Koala Corporation
    Inventor: Jeff H. Hilger
  • Patent number: 5433502
    Abstract: A folding chair with integral transportation tube comprising a seat removably attached to a transportation tube and a base. The seat is a folding seat comprised of a pair of folding seat supports and a seat bottom and seat back attached to the seat supports. The transportation tube and base support the seat in the chair configuration. The seat folds to fit into the transportation tube with the base for transportation.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: July 18, 1995
    Inventors: John P. Condorodis, John H. McConnell, James M. Hodson
  • Patent number: 5429413
    Abstract: A folding lounger with a frame having parallel longitudinal elements each of which is provided with two hinges defining a central portion forming the seat to which are hinged folding legs. The frame also has an upper portion and a lower portion each of which includes a fabric stretched between the two longitudinal elements, as well as at least two supporting crossbars arranged one at each end of the frame. The folding legs are mounted at each end of the seat on joints fastened to the respective hinges the joints being provided so that the folded legs can be juxtaposed in pairs. Support bars are provided with a joint so they can lie alongside the longitudinal elements to allow them to be brought together on folding, whereby the fabric becomes slack and lies outside the structure to avoid being damaged when the lounger is fully folded. The lounger further comprises locking devices for locking and stabilizing the chair when it is fully unfolded and ready for use.
    Type: Grant
    Filed: January 4, 1993
    Date of Patent: July 4, 1995
    Inventors: Lionel Levy, Kevin S. Steiner
  • Patent number: 5415455
    Abstract: A chair with a fabric sling backrest and seat which suspend under tension when the chair is expanded from stretcher and support tubes. The chair collapses by unlocking studs--mounted on the chair's stretcher tubes--from receiver slots, and rotating the stretcher tubes ninety degrees into one plane. The back support tubes also pivot down into the same plane. The chair then easily folds into a compact carrying size. The chair fits into a carrying bag, or alternatively, carrying straps are sewn directly onto the fabric backrest.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: May 16, 1995
    Inventor: G. Richard Geldbaugh
  • Patent number: 5362130
    Abstract: A lightweight, collapsible compact chair with back support for outdoor backpacking use is described. The chair is an improvement in stability and weight to a prior art compact chair disclosed in U.S. Pat. No. 4,673,211. The improved chair version comprises a triangular sling fastened to the ends of three frame support members which are joined to form an inverted wye for placing on the ground. The two front support members are angled 90 degrees apart for optimum seated stability. A removable backrest is placed against the top of the sling and held by an adhesive. Each of the three frame support members may be easily connected or disconnected without need of screws or clamps. When placed closely together for packing together with the sling, the package weighs less than 24 ounces, which is very suitable for back-packing.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: November 8, 1994
    Inventor: Timothy C. Hoffman
  • Patent number: 5358263
    Abstract: The invention is an improved wheel chair made essentially of metal or plastic pipe, and is capable of being folded into a compact size which may be conveniently stored in the hanging wardrobe or overhead storage of an aircraft. The chair comprises a removable cane handle supported back rest, removable foot rest and rear extension bar and a fabric seat looped over and fastened to and between a pair of seat bars affixed to a pair of intersecting braces connected together by a longitudinal bolt. The intersecting braces each have a sleeve affixed at the bottom end which fit on and rotate on pivot means affixed to the bottom of the side frames. The intersecting braces are pivotally connected to the seat bars for retaining the side frames in spaced relationship during folding and unfolding.
    Type: Grant
    Filed: April 30, 1993
    Date of Patent: October 25, 1994
    Inventors: Richard E. Aldus, Anita L. Aldus
  • Patent number: 5340193
    Abstract: A foldable portable chair provides users with two side-by-side seats. The supporting framework of the chair includes four support members. The first and second support members are hingeably attached to each other at their upper ends to forman inverted V-shape. The third and fourth support members are hingeably attached to each other at their lower ends to form a V-shape. The first and third support members and the second and fourth support members are then pivotally attached to each other so as to fold in a scissors fashion. A first seat member extends between the first support member and the third support member. A second seat member extends between the second support member and the fourth support member. In the preferred embodiment, the support members are U-shaped, and a storage compartment is suspended between the two seat members.
    Type: Grant
    Filed: September 8, 1993
    Date of Patent: August 23, 1994
    Inventor: Henry W. Wolf
  • Patent number: 5271422
    Abstract: A foldable rigid frame front entry safety walker having programmed resistance to backward motion, and having a porous seat to accommodate incontinent patients.
    Type: Grant
    Filed: December 11, 1990
    Date of Patent: December 21, 1993
    Inventors: Michael R. Sorrell, Simon Slootsky
  • Patent number: 5244250
    Abstract: A portable, fold-up sports chair includes fabric seat and back portions, attached to and extending between a lightweight, collapsible tubular frame. The transverse frame members are hinged to allow the chair to be folded into a compact bundle for transportation or storage. Straps attached to the underside of the legs help prevent the chair legs from penetrating or sinking when used on a soft surface such as sand. The angle of the seat back is adjustable by means of straps which also serve as arm rests when the chair is in use.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: September 14, 1993
    Inventor: Robert A. Nordmeyer
  • Patent number: 5149120
    Abstract: A locking apparatus is operative to selectively prevent the folding of a wheelchair of the type having a pair of centrally pivoted cross braces under the wheelchair seat. A bracket member is provided at each end of a pin which is adapted to constitute the pivot for the cross braces. An elongate bar is hinged at one end to one of the brackets and is adapted to be swung into a position between the cross braces so as to obstruct folding. A locking device operates between the other end of the bar and the other of the brackets for selectively retaining the bar in obstructing position.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: September 22, 1992
    Inventor: Thomas S. Halliday
  • Patent number: 5145197
    Abstract: A folding wheelchair has a rigid seat, leg support members stored in a compartment within the seat, a rigid backrest that can be collapsed when the wheelchair is folded, armrests that can be swung toward the seat or the backrest, and wheels that can be adjusted to raise or lower the seat and/or to shorten or lengthen the wheelbase. The rigid seat can be raised to a position in which the front or the front and rear portions are elevated.
    Type: Grant
    Filed: September 14, 1987
    Date of Patent: September 8, 1992
    Assignee: Contemporary Medical Equipment Corp.
    Inventor: Armand Gatti
  • Patent number: 5141250
    Abstract: A lightweight, easly transportable wheelchair having seat-support frame members which are adjustably coupled to back-frame members so as to reciprocate up-and-down within guide slots formed in the back-frame members. Additionally, the front and back wheels, the armrests, and the footrests are readily detachable and attachable. This arrangement reduces the overall height, width and depth of the basic frame of the wheelchair to make for easy transportability when the detachable parts are removed.
    Type: Grant
    Filed: December 5, 1990
    Date of Patent: August 25, 1992
    Inventors: Jerry E. Morgan, David E. Morgan
  • Patent number: 5112069
    Abstract: The invention is an improved wheel chair made essentially of metal or plastic pipe, and is capable of being folded into a compact size which may be conveniently stored in the hanging wardrobe or overhead storage of an aircraft. The chair comprises a removable cane handle supported back rest, removable foot rest and rear extension bar and a fabric seat looped over and fastened to and between a pair of seat bars affixed to a pair of intersecting braces connected together by a longitudinal bolt. The intersecting braces each have a sleeve affixed at the bottom end which fits on and rotate on pivot member affixed to the bottom of the side frames.
    Type: Grant
    Filed: September 16, 1991
    Date of Patent: May 12, 1992
    Inventors: Richard E. Aldus, Anita L. Aldus
  • Patent number: 5058949
    Abstract: A foldable chair for the beach or outdoor use comprising a frame of metal or other rigid material including fabric or plastic seat and back rests is supported between pairs of elongated telescoping parallel supporting members including X-pivoted braces which are hingedly connected to enable the chair to be folded together into an elongated configuration for carrying purposes. A locking mechanism enables the chair to be maintained in rigid open position.
    Type: Grant
    Filed: August 17, 1990
    Date of Patent: October 22, 1991
    Inventor: Brant Von Hoffman
  • Patent number: 5058950
    Abstract: A foldable chair comprising a pair of front legs, a pair of rear legs, and linkage systems interconnecting the legs. The chair is characterized in that each linkage system consists of a pair of compass-like frame members and a respective pair of crosswise extending link arms. The linkage system is designed so that when the chair is in its folded position it forms into a compact package whereby the legs extend in close parallel relative positions.
    Type: Grant
    Filed: November 1, 1990
    Date of Patent: October 22, 1991
    Inventor: Amiram Mann
  • Patent number: 5054849
    Abstract: A small-sized, ultra-lightweight chair that collapses into a small diameter bundle for easy storage or carrying by hand, in a bag or case, on one's back, or in a backpack, and the like. The chair comprises a front scissor-linkage and a rear scissor-linkage, which are laterally-inwardly foldable to provide for the collapsible nature of the chair. The front and rear scissor-linkages are interconnected by a crossed pair of cords, one pair connecting the scissor-linkages on one lateral side of the chair and the other X-shaped cords connecting the scissor-linkages on the other lateral side of the chair. The scissor-linkages are made of light-weight, rigid slats, the upper ends of the slats of which mount a rectangular piece of fabric for providing the seat proper upon which one sits. The lower ends of the slats of the front scissor-linkage are coupled to the lower ends of the slats of the rear scissor-linkage by a pair of folding braces, one brace for each lateral side of the chair.
    Type: Grant
    Filed: August 13, 1990
    Date of Patent: October 8, 1991
    Inventor: Richard Hoff
  • Patent number: 5044690
    Abstract: A folding stool comprising a pair of hinged seat supports (10) connected to a pair of hinged leg supports (22) by way of a pair of pivots (26) in such a manner that the leg supports fold up into and fit within the seat supports thus making a compact package convenient to carry and store. Hinged leg supports and hinged seat supports cross each other at the point of the pivots in substantially X form when stool is open and in use. The leg supports are connected to each other by means of a flexible double acting hing (24) permitting rotation of the leg supports over the 180.degree. horizontal and, moving in concert about the pivots, leg supports and seat supports are brought into a position suitable for supporting an adult user at a comfortable, normal chair height. The dimension representing seat height when stool is in use is substantially greater than the longest dimension of the folded package.
    Type: Grant
    Filed: March 14, 1990
    Date of Patent: September 3, 1991
    Inventor: Ralph H. Torrey
  • Patent number: 5005881
    Abstract: A locking mechanism to be applied to an inactive door of a set of active and inactive double doors coordinated so that the inactive door closes first relative to a frame followed by the closing of the active door. Adjustable drive means is employed capable of either lengthwise contraction upon the application of a force between first and second separated locations on the adjustable drive means exceeding a threshold value, or linear movement without substantial contraction upon the application of a force less than the threshold value. A door-lock actuating element is coupled to the adjustable drive means at the first location. A door-locking element is coupled to the adjustable drive means at the second location. The adjustable drive means, the door-lock actuating element, and the door-locking element are supported at an upper or lower corner of the inactive door.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: April 9, 1991
    Assignee: Rixson-Firemark Inc.
    Inventors: Kevin L. Bailey, Richard E. D'Hooge
  • Patent number: 4925242
    Abstract: An adjustable lumbar back support system mountable across the back rest of a foldable wheelchair. The system is adjustable vertically and includes two cam members eccentrically mounted on an elongated member to selectively provide fore and aft adjustment as well as side to side adjustment. Additionally, pads can be mounted on the cam members to provide a further range of support to the system. The system provides rigidity to foldable wheelchairs and pivots out of the way when the wheelchair is collapsed. The system is also lightweight and unobtrusive and may be retrofitted to most existing styles of wheelchairs.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: May 15, 1990
    Assignee: Scott Orthotic Labs, Inc.
    Inventors: Godfrey Harris, Leslie K. Hydle
  • Patent number: 4890882
    Abstract: A collapsible beach chair having a seat made of parallel tubular members and a webbing stretched across to support the occupant, a pivoted back made of parallel tubular members with a webbing stretched across to support the back of the occupant, and identical end pieces to support both ends of the seat and the top of the back. Provision is made to permit the chair to be collapsed both transversely and by folding the back onto the seat after the end pieces are removed. The whole collapsed assembly will fit conveniently into a zippered bag with a shoulder strap.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: January 2, 1990
    Inventor: Christopher T. Harrington
  • Patent number: 4889383
    Abstract: A folding chair construction comprising a plurality of substantially U-shaped portions, each having a pair of parallel side sections connected by a right angle corner member to a medial section, providing back and seat portions and front and rear legs hingedly connected for movement between a folded position, wherein all of the U-shaped portions are superposed with one another, and an erected position, wherein the U-shaped portions are relatively angularly disposed. The side sections of the back and seat portions and the medial sections of all portions are formed of tubular members connected for relative, telescoping movement between extended and retracted positions when the chair is in the unfolded and folded positions, respectively. A flexible fabric support portion is permanently secured to the back and seat portions by outwardly extending portions of the fabric which are looped around the side and medial sections and stitched to themselves.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: December 26, 1989
    Inventor: Deryl K. Jones
  • Patent number: 4836601
    Abstract: The subject invention comprises a foldable portable chair which has a seat section and a support section. In the preferred embodiment the seat section is a triangular flexible web which is attached to the upper portions of the support section. The support section is made up of a first and second V shaped supports. These V shaped supports are each formed from two arms which are pivotally connected to each other. The V shaped supports are nested one in each other. The apexes of the V shaped supports are oriented opposite to each other. Lastly the V shaped supports are also interconnected to each other by support means to limit the travel of the V shaped supports and their respective arms in relation to each other.The chair of this invention is suitable for both juvenile and adult usage.
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: June 6, 1989
    Assignee: U.S. Brands
    Inventor: Richard E. Cone
  • Patent number: 4826241
    Abstract: A folding chair comprises left and right A-frames which are connected by fore and aft jointed cross braces. Each A-frame comprises two legs which are pivotally connected at their upper ends. The cross braces are pivotally attached to the legs of the A-frames at the lower end of the braces, and connected to the legs at the upper end of the cross braces with short links forming the upper joint of the cross brace strut. The seat and back of the chair are pivotally connected to one another. The chair folds into a bundle having a length substantially equal to that of the legs of the A-frames.
    Type: Grant
    Filed: January 5, 1988
    Date of Patent: May 2, 1989
    Inventor: Lee J. Barras
  • Patent number: 4807930
    Abstract: An improved sling seat for a folding chair of the type having a frame constructed of a plurality of pivotally connected strut members supporting a sling seat. The sling seat improvement including a plurality of fold lines which radiate outwardly from a common point on the centerline of the sling. The fold lines permitting a thick semi-inflexible fabric sling seat of this pattern to fold, in a non-crumpled wrinkle-free form, with the frame, thereby allowing the frame to fold more compactly than previously with such fabric slings and allowing this sling seat to remain upon the folded frame for simple storage or transport.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: February 28, 1989
    Inventor: Bob Helfrich
  • Patent number: 4802683
    Abstract: An attachment is provided for a typical folding wheelchair. The attachment includes a handle or lever which can be pushed downward by the occupant of a wheelchair to raise the seat thereby causing the wheelchair to partially fold and reducing its overall width. A pawl and toothed bracket are provided to selectively hold the chair in predetermined conditions of reduced width. A lifting lever may be positioned either for operation by an occupant or by an attendant and the lever mechanism may be rotated away from the occupant of the chair to avoid restricting his movement. Optional power operated means are also shown which can be used in tandem with or as a replacement for the manually operated means. The power operated means include a battery operated motor and a cable which is pulled or allowed to retract by a crank lever rotated by the motor. Another form of power operated means uses the electric motor to wind a cable on a drum thereby lifting the chair seat to which the cable is connected.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: February 7, 1989
    Inventor: J. T. Gillum, Sr.
  • Patent number: 4801176
    Abstract: A completely collapsible chaise-cot deriving an unique compact folding characteristic from a folding transverse foot-base support structure. The folding support structure gives an increased compactable collapsibility to this invention over the folding chairs and cots of prior inventions. Earlier art, although achieving a modicum of collapsibility for cots, lawn chairs and the like, was devoid of full and compact collapsibility because no provisions had been made by the inventors to fold the common transverse base and upper frame supporting structures. The long felt need, therefore, for a folding, completely collapsible transverse foot-base support structure has been fulfilled by this invention and the art form has achieved a new level of utility as a result.
    Type: Grant
    Filed: August 12, 1987
    Date of Patent: January 31, 1989
    Inventor: David Wolberg
  • Patent number: 4784436
    Abstract: A portable knock down chair carried in a bag, to be used for temporary seating, for example at beaches, wherein most of the major components are substantially of similar C-shape and size. The chair is comprised of a frame assembly of C-supports. A pair of longitudinal elongated C-seat supports each have a pivotal elongated side support for a back hingedly secured thereto and may be pivoted to a substantially perpendicular and upright position during use or folded down parallel to the seat support during non use and storage. A fabric seat and fabric back panel are slidingly positioned on and depend between the opposing seat supports and side supports. Transverse elongated front and rear C-leg supports are removably attached between front and rear depending end portions respectively of the seat support members to elevate the chair approximately nine inches from the ground plane in the preferred embodiment. The transverse elongated C-top support is removably connected between the opposing side supports.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: November 15, 1988
    Assignee: Larry A. Peterson
    Inventor: Garry Sutherland
  • Patent number: 4775182
    Abstract: The chair of the present invention comprises a foldable frame of metal or other rigid material, comprising a fabric or plastic seat rest supported between a pair of tubes or rods, to the ends of which are hingedly connected a pair of telescoping tubular back supports, which, in open position extend upward, supporting between them in taut relation a backrest, also of fabric or plastic, which is further supported by a pair of X-pivoted braces and other braces connected to the telescoping tubular supports. Four stub legs support the seat rest in open position. A particular feature of the invention is that it is readily folded into an elongated configuration of narrow width, which may be fitted into a tube, by first folding the back and seat together, and telescopically extending the back supports, which simultaneously causes the X-pivoted braces and other braces to rotate into approximately parallel relation with the back supports.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: October 4, 1988
    Inventor: Brant von Hoffman
  • Patent number: 4741547
    Abstract: A folding wheelchair frame including a compound folding mechanism having fore and aft tubular hinged wing frames pivotally coupled to the chair's side frames and to a longitudinal tubular slide-follower coordinating assembly. Scissored arms coupled between the forward hinged frame and slide-follower coordinate the folding action relative to the chair's longitudinal center axis and allows the latching thereof. Associated swing-away footrests, removable armrests and latched, folding back frames further reduce the folded profile and facilitate chair usage.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: May 3, 1988
    Inventor: Alan L. Tholkes
  • Patent number: 4717201
    Abstract: A folding chair comprises left and right "A" frames which are connected by fore and aft cross braces. Each "A" frame comprises two legs, equal in length, which are pivotally connected at their upper ends. The cross braces are pivotally attached to the legs of the "A" frames at the lower end of the braces, and slidingly connected to the legs at the upper end of the cross braces. The seat and back of the chair are pivotally connected to one another. The chair folds into a bundle having a length substantially equal to that of the legs of the "A" frames.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: January 5, 1988
    Inventor: Lee J. Barras
  • Patent number: 4715650
    Abstract: A collapsible folding lawn chair is provided. Employing a chair of the folding frame and "sling seat" variety, a second level of compactness is achieved by addition of flexible locking hinges intermediate certain straight members of the frame. The chair remains a readily assembled single unit yet collapses to an easily transported and stored size. Additional features such as fully reclinability can be readily provided with minimal increase in the storage size of the chair.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: December 29, 1987
    Inventors: Cary Berman, Steven Kiss
  • Patent number: 4697823
    Abstract: One end of a support angle member is turnably connected to the lower end of a push rod, and the other end of the support angle member is turnably connected to the middle portion of a rear leg. When the push rod is aligned with one end of the support angle member, a sleeve urged by a spring to slide downward on the push rod engages the opened state locking-purpose engaging portion of the support angle member, thereby locking the opened state of a baby carriage. When the baby carriage is to be locked in its closed state, the sleeve engages the closed state locking-purpose engaging portion of the support angle member, thereby locking the closed state.
    Type: Grant
    Filed: May 16, 1986
    Date of Patent: October 6, 1987
    Assignee: Aprica Kassai Kabushikikaisha
    Inventor: Kenzou Kassai
  • Patent number: 4685725
    Abstract: A folding chair providing a lightweight, strong and sturdy chair when unfolded and providing a compact elongated structure when folded. The folding chair invention accommodating arm chair and straddle chair configurations, each of these comprising a frame assembly having a plurality of pivotally connected strut members, and a fabric sling seat supported by the frame assembly. The frame assembly including two crossing interconnected sub assemblies, each sub assembly of four or five strut members. A pivotal stop link being used to stop the unfolding of each sub assembly, each stop link including two parallel shafts pivotally connecting a side member of one sub assembly with a side member of the other sub assembly.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: August 11, 1987
    Inventor: Robert H. Helfrich
  • Patent number: 4682783
    Abstract: A foldable wheelchair, which may be moved along a predetermined direction of movement, includes first and second side frames, drive wheels and travelling wheels rotatably supported on the side frames, and a folding mechanism which extends between the side frames, which can be moved between a folded position and an unfolded position, and which, in turn, includes first and second pivoting devices. Each pivoting device may be pivoted about a respective center axis, which extends approximately along the direction of movement, and each pivoting device has ends facing away from its respective center axis. Each side frame defines first and second pivot axes, which extend substantially parallel to the center axes. The ends of the first pivoting device are pivotable about corresponding of the first pivot axes, and the ends of the second pivoting device are pivotable about corresponding of the second pivot axes.
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: July 28, 1987
    Assignee: Paratec AG
    Inventor: Rainer Kuschall
  • Patent number: 4652047
    Abstract: A folding chair provided with 8 rods, 4 of which stand vertically a distance apart defining the four corners of the chair and four of which are diagonally crossed and pivotly secured to each other near their midpoints. The lower end of each diagonal rod is connected to the lower portion of a vertical rod and the upper end of the diagonal rod is connected to the upper portion of the vertical rod located at the corner diagonally opposite the first vertical rod. A seat bottom comprised of flexible material and two bracing rods is supported at four corners where the upper ends of the diagonal rods meet the vertical rods. Arm and back supports of a flexible material are supported by portions of the vertical rods extending upward beyond the seat level. Each vertical rod is connected to a diagonal rod in two locations. In the first embodiment, one connection is a releasable joint and the other connection is pivoted joint.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: March 24, 1987
    Inventor: Alexander Guy Chan
  • Patent number: 4648651
    Abstract: A collapsible, stick-folding, lie-back push-chair including seat support members having back rest members and armrest members, the inclination of the back rest members being controlled by connector members slidable along armrest members and having locking means in the form of a spring loaded pin for engagement with a hole in the armrest members. In the fully reclined position, the back rest members, and thus the seat, lie substantially parallel with the ground, at an angle of 165.degree.-170.degree. to the horizontal.
    Type: Grant
    Filed: June 12, 1985
    Date of Patent: March 10, 1987
    Assignee: Andrews Maclaren Limited
    Inventor: Peter C. Hawkes
  • Patent number: 4645260
    Abstract: A folding chair defined by an H-shaped front portion and an H-shaped back portion secured together in an articulated manner by a mechanism including a pair of cross strut assemblies, a pair of rear braces, a pair of front braces and a pair of articulated lever linkages, which mechanism permits the chair to be folded into an extremely compact assembly and unfolded into a highly stable position of use. The chair also includes a removable backrest for providing resilient support to the back of the user, a flexible web seat tensioned between the front and back portions and a pair of armrests carried by the lever linkages.
    Type: Grant
    Filed: November 29, 1984
    Date of Patent: February 24, 1987
    Assignee: Loga Mobel GmbH
    Inventors: Alexander Harty, Jurgen Lange
  • Patent number: 4595232
    Abstract: A portable chair that includes seat support members that can be folded together, a pair of X-configured leg sections pivotally connected to the seat support members, the pivotal connections permitting change of the leg sections from a person support function to a folded up condition wherein the leg members move through an angle of 270.degree. so as to lie in adjacent parallel planes with each other and with the folded together seat support members.
    Type: Grant
    Filed: November 19, 1984
    Date of Patent: June 17, 1986
    Assignee: Holt E. Glenn
    Inventors: Holt E. Glenn, Clarence F. Smith, Jr.
  • Patent number: 4583758
    Abstract: A mobile body support vehicle has a collapsible tubular frame. The frame includes longitudinally extending members formed by interconnected front in rear portions and transversely extending front intermediate bars and rear cross interconnecting the longitudinal members. The longitudinal members include detachable unions between the front and rear portions allowing the front and rear portions to be connected together and disconnected. The unions are each positioned substantially within a common plane oriented transversely with respect to the longitudinal members. The vehicle includes a front and rear pair of spaced apart wheels which are pivotally mounted to opposite sides of the frame and a pair of spaced apart intermediate wheels which are mounted on opposite sides of the frame at a location between the front and rear wheels. The intermediate wheels are larger than the front and rear wheels and include circumferential hand gripping members allowing the user to propel and control the vehicle.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: April 22, 1986
    Assignee: Brett H. Runion
    Inventors: Brett H. Runion, Brian A. Novak, Gary Horne
  • Patent number: 4579390
    Abstract: A flexible panel assembly including front, rear and opposite side marginal portions is provided and the opposite side marginal portions include tubular hems in which stiff strap type mounting bars are received. The opposite side mounting portions overlie front-to-rear extending opposite side support members of a wheelchair and are secured thereto by fasteners secured downwardly through the panel assembly, including the mounting bars, and anchored in the aforementioned support members. The central forward portion of the panel assembly includes an upstanding cushion-type abutment post for reception in the crotch area of a person seated in the wheelchair and upon the panel assembly and the abutment post and panel assembly include exterior surfaces which may be readily cleaned.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: April 1, 1986
    Inventor: Harold H. Guille
  • Patent number: 4579383
    Abstract: A foldable, lightweight, principally metal chair or ottoman has a pair of spaced apart side frames with front and rear legs connected by an upper arm. The seat comprising a pair of fore to aft extending seat side rails, each lying within the vertical plane of one of the side frames, and connected together by a flexible material seat web is supported for folding movement by a pair of vertically inclined cross frames pivotally connected generally intermediate their ends and fixed at their upper ends to the seat side rails. Each cross frame is pivotally connected to a side frame near the lower end thereof, and caps on the seat side rails have forwardly and rearwardly extending extensions which project beyond the seat rails to engage the inboard sides of the front and rear legs of the side frames when the furniture unit is unfolded to spread position to react to the weight of a seat occupant and bear against the legs to maintain them in spread apart position.
    Type: Grant
    Filed: May 7, 1984
    Date of Patent: April 1, 1986
    Assignee: Lee L. Woodard, Inc.
    Inventor: Donald B. Colby
  • Patent number: 4577878
    Abstract: A folding wheelchair comprises a framework, a seat and a backrest mounted on said framework. Two front caster wheels permit steering and two large rear wheels permit propulsion. The framework comprises two symmetrical lateral rectangular frames mounted to be moved away from or brought back toward each other by a jointing device, each lateral rectangular frame comprising at least one lower and one upper horizontal side-bar spaced by one front and one rear vertical side-bar. The jointing device comprises a compass-member having two legs whose outer ends are rotatively mounted around two parallel supporting pins, each of which is disposed within the corresponding lateral frame of the framework. Two pieces of canvas are provided, which are parallelly stretched between the lower and the upper horizontal side-bars of the lateral frames and are located on opposite sides of the compass, one of these pieces of canvas comprising the seat.
    Type: Grant
    Filed: May 29, 1984
    Date of Patent: March 25, 1986
    Assignee: Lacoste, SA
    Inventors: Jehan Roy, Jean Dubois
  • Patent number: 4566731
    Abstract: The invention concerns a dismountable folding chair or armchair structure, and in particular, a "director"-type chair, in which a fold-up seat, defined by pivoted elements, crossing one another, is hinged to side frames defining the supporting legs, the armrests and backrest elements of the chair.The folding seat and the side frames include reciprocal connecting means which may snap on and off, to stiffen and hold the chair folded down. The seat and backrest fabrics, moreover, are removably fitted in order to allow the fabrics themselves to be changed.
    Type: Grant
    Filed: May 24, 1984
    Date of Patent: January 28, 1986
    Assignee: Royal Plastic S.A.
    Inventor: Sisto Marchesini