Fabric Bottom And Back Patents (Class 297/45)
  • Patent number: 4565388
    Abstract: A structure for connecting a handle to the push rods of a baby carriage is located between the push rods of a pair of push rods (1) and the handle for allowing the widening and narrowing of the distance between the push rods (1) in response to opening or closing the baby carriage. The distance between the push rods (1) in the open state, is firmly maintained in that the connecting sections between the push rods (1) and the push rod-connecting rod (2) are locked. This locking of each connecting section is achieved when a locking sleeve (10) is displaced downwardly by the force of a spring (15), whereas it is canceled when the locking sleeve (10) is displaced upwardly against the force of the spring (15).
    Type: Grant
    Filed: April 6, 1984
    Date of Patent: January 21, 1986
    Assignee: Kassai Kabushikikaisha
    Inventor: Kenzou Kassai
  • Patent number: 4547015
    Abstract: A folding canvas chair includes a pair of improved connecting members of generally L-shape. The connecting members are provided to pivotally connect legs of a chair with a pair of supporting posts supporting the back of a sitting person. The supporting posts can be folded backwardly for an easy hand carrying.
    Type: Grant
    Filed: November 3, 1982
    Date of Patent: October 15, 1985
    Inventor: Yasuo Wakimoto
  • Patent number: 4544203
    Abstract: The present invention concerns a foldable head rest which provides elevated support for a person's head while lying in the prone position at the beach or other leisure place, for example. The head rest may be easily carried in a folded flat configuration in one's luggage or hand and quickly unfolded for use at the beach.The head rest broadly comprises a pair of rectangular frames including an interior and exterior frame each having two seats of two offset but parallel leg portions. Cross members join the opposite leg portions of each frame at their otherwise free ends. Fabric panels are secured to the respective cross members of the opposite frames including a top panel which provides direct support for the head and a bottom panel which supportively contacts the sand or ground to prevent the head rest from sinking into the sand or ground.Each set of leg portions of each frame are formed at their midsections with a central hub.
    Type: Grant
    Filed: October 11, 1984
    Date of Patent: October 1, 1985
    Inventors: Steven K. Younger, Rudolf A. Fiedelak
  • Patent number: 4532948
    Abstract: A walker provided with a nonremovable flexible material seat of sufficient slack for comfortable sitting, suspended from a pair of upper level horizontal brace members on parallel opposite sides of the walker frame, by directly attaching a rectangular piece of strong flexible material onto said pair of oppositely positioned horizontal brace members.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: August 6, 1985
    Inventor: Esther J. Burrows
  • Patent number: 4494791
    Abstract: A folding wheelchair which incorporates two side frames, a first cross-brace connecting the two side frames, which first brace is foldable, and two staffs rotatably mounted on respective each side frame. The wheelchair also possesses a second cross-brace connecting the two staffs, with the second cross-brace being constituted of two parts swivable about a common axis whereby the wheelchair is of lightweight and rigid construction.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: January 22, 1985
    Inventor: Leo Jouk
  • Patent number: 4477117
    Abstract: A folding wheel chair having means (22) to elevate the seat (11) and back rest portion relative to the main frames (2) of the wheel chair is disclosed. The seat portion (11) is mounted to be vertically slidable on a pair of side frames (16). The lower portion of the side frames and the seat portion are interconnected by cross struts. Means (22) elevate the side frames relative to the main frame which carries the wheels (7,8) of the wheel chair so that on elevating the side frames, the side frames and the seat portion (11) raise as a unit together with the cross struts to maintain the wheel chair in the unfolded condition.
    Type: Grant
    Filed: July 22, 1981
    Date of Patent: October 16, 1984
    Inventor: Arthur B. Higgs
  • Patent number: 4437700
    Abstract: A collapsible chair that includes a front pair and rear pair of crossed, pivotally interconnected legs having a common pivot axis extending from front to rear, seat-supporting rails extending between the pairs of legs front to rear at each side with such seat-supporting rails secured to the uppermost portion of each leg and inwardly thereof, unitary armrest and backrest supporting structure extending between the pairs of legs front to rear at each side by pivots securing same to the uppermost portion of each respective leg only, so as to be swingably separable from the adjacent inner seat-supporting rail and to move into substantial upstanding abutment thereagainst in chair-defining relation, with each unitary armrest and backrest supporting structure including a reinforcing member projecting inwardly thereof moving into and out of overlying engagement with the uppermost surface of the adjacent inner seat-supporting rail.
    Type: Grant
    Filed: July 16, 1981
    Date of Patent: March 20, 1984
    Inventor: John T. Elaschuk
  • Patent number: 4428598
    Abstract: A foldable baby carriage comprises a pair of front legs (10), a pair of rear legs (14) pivotally connected at their upper ends (15) to the front legs (10), a pair of support angle bars (20) pivotally connected at their one end (21) to the middle regions of the rear legs (14), a pair of pusher rods (2) pivotally connected at their lower ends to the other ends (22) of the support angle bars (20), slidable and pivotal connecting members (5) slidably and pivotally connecting the upper ends of the front legs (10) to the pusher rods (2), a pair of transverse connecting rods (24) operatively connecting the front legs (10) and support angle bars (20) together, a front leg connecting rod (11) extending between the front legs (10), a rear leg connecting rod (18) extending between the rear legs (14), and a pusher rod connecting rod (4) extending between the pusher rods (2).
    Type: Grant
    Filed: July 15, 1982
    Date of Patent: January 31, 1984
    Assignee: Kassai Kabushikikaisha
    Inventor: Kenzou Kassai
  • Patent number: 4415177
    Abstract: The invention is a folding wheelchair (10) having as its basic elements a frame (12), a folding backrest (48), a removable headrest (60), a set of rotatable foot pads (66), a set of rotatable arms (54), a set of four wheels (76), and a set of foldable handles (84) carried on a pair of slidable and recessing arms (82). The wheelchair is rendered foldable via a spider mechanism (90) comprising a body (92) and four leg elements (94). The end portions (96), (98) of the leg elements (94) are pivotally secured to the frame (12). Folding and unfolding of the chair is carried out by use of a handle (114) which rotates a set of cams (118). When the handle is in the horizontal or "lock" position, the central portions (108) of the leg elements (94) are locked in the wheelchair "unfolded" condition. When the handle is in the vertical or "unlock" position, the leg elements (94) are free to slide along a set of guide slots (116), permitting the wheelchair to be folded.
    Type: Grant
    Filed: December 15, 1981
    Date of Patent: November 15, 1983
    Assignee: Lockheed Corporation
    Inventors: Thomas K. Hale, Peter P. Kavaloski
  • Patent number: 4411472
    Abstract: A hammock for a baby carriage has a seat and a back rest. The seat includes a seat extension at the front end thereof. The seat is formed on right and left tubular slide guide rods extending longitudinally. Each of the sliders is inserted into the respective one of the slide guide rods from the front so as to be slidably guided by the slide guide rod. A belt for reinforcement is stretched between the right and left sliders. By forwardly pulling out the sliders, the seat extension is brought into a substantially horizontally extending position, whereby the hammock is provided with a seat extension function.
    Type: Grant
    Filed: March 27, 1981
    Date of Patent: October 25, 1983
    Assignee: Kassai Kabushikikaisha
    Inventor: Kenzou Kassai
  • Patent number: 4405142
    Abstract: A knock down wheel chair that can be quickly disassembled and reassembled includes a pair of side frames connectable together by a front frame by means of quick release pins and by a back frame by means of quick release pins with a set of main wheels that are mounted to the respective side frames by means of quick release pins. The front frame assembly carries the front casters and is telescopically received in the side frames for adjusting the wheel base and is invertible to adjust the height of the frame with respective to the castors. The main wheels are detachably connectable to mounting plates on the side frames that are also adjustable for adjusting the width between the wheels and have means for adjusting the camber of the wheels as well as provide multiple different positions for height and center of gravity of the main wheels.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: September 20, 1983
    Assignee: Stainless Medical Products, Inc.
    Inventor: Donald L. Whetstine
  • Patent number: 4386790
    Abstract: A foldable baby carriage or infant carrier comprises a pair of slide guide rods, a pair of sliders slidable on the slide guide rods, a pair of front legs turnably connected at the upper end thereof to the sliders, a pair of rear legs turnably connected to the intermediate portions of the front legs, a pair of support angle bars turnably connected at one of their respective ends to the intermediate portions of the rear legs and at the other ends thereof to the lower ends of the slide guide rods, and a pair of foldable operative connecting rods which are turnably connected in such a manner as to connect the above-mentioned intermediate portions to the slide guide rods at positions spaced a predetermined distance from the lower ends thereof. During the folding operation, the various connecting portions turn while the sliders slide on the slide guide rods. In the folded state, the support angle bars overlap the slide guide rods, so that the overall height has been decreased.
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: June 7, 1983
    Assignee: Kassai Kabushikikaisha
    Inventor: Kenzou Kassai
  • Patent number: 4369987
    Abstract: The invention relates to a folding wheeled chair/luggage carrier of the kind having a pair of side frames which can be folded between an erected, spaced side-by-side position and a stowage position via releasable locking means, and thereafter collapsed fan-wise into a stowage bundle, each side frame comprising pivotally connected back and base support and bracing bars and one or more struts which are pivotally connected between the free ends of said back and base support and bracing bars.A pair of seat bars are pivotally connected at corresponding intermediate positions to respective back support bars of said side frames for pivoting between a stowage position substantially in alignment with said back support bars to a use position in which their free ends extend forwardly, a fabric seat panel being fixed between the seat bars.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: January 25, 1983
    Inventor: Nancy B. Witherell
  • Patent number: 4369986
    Abstract: A folding stroller for transporting children includes a pair of side rods articulated in the center having curved steering handles at the upper ends and wheels at the lower ends, a first cross rod pivotally connecting the lower ends of the side rods and articulated in the center, a pair of articulated back legs with each leg pivotally connected proximate one end to one of the side rods and provided with a wheel at the opposite end, and a second cross rod pivotally connecting the back legs and articulated in the center. The two rods and two legs together form a frame across which a seat having inflatable cushion inserts is fastened, whereupon folding of the stroller is achieved by the pivoting and articulation of the side rods, cross rods and back legs.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: January 25, 1983
    Inventor: Alicia B. de la Fe
  • Patent number: 4362315
    Abstract: A foldable baby carriage has a pair of front legs and a pair of rear legs, with each rear leg being pivotally connected to the intermediate portion of the associated front leg and rearwardly downwardly extending therefrom. An angle bar is pivotally supported above the upper surface of each rear leg intermediate between the ends of the latter and has a pusher rod pivotally connected thereto. With the baby carriage in the opened state, the angle bar is substantially in line with the associated pusher rod portion. With the baby carriage in the closed state, the angle bar and the associated pusher rod portion are in bent relation to each other, thus reducing the vertical dimension of the baby carriage and at the same time reducing the distance between the front legs and between the rear legs and the distance between the front and rear legs, thereby establishing the folded state of the baby carriage.
    Type: Grant
    Filed: January 27, 1981
    Date of Patent: December 7, 1982
    Assignee: Kassai Kabushikikaisha
    Inventor: Kenzou Kassai
  • Patent number: 4359244
    Abstract: A unique folding chair having a frame which permits said chair to be easily and conveniently folded into a compact configuration that facilitates both the storage and transport thereof. The frame of the instant folding chair includes a triangular-shaped seat support structure and an arrangement of legs that are spaced relative to one another in positions that correspond to the vertices of a triangle. By virtue of particular coupling assemblies, the structural members of the folding chair of the present invention are adapted to be moved in one or both of two perpendicular directions. Accordingly, the chair may be folded so that the structural members thereof can be arranged in substantially parallel alignment with one another and generally in a single plane.
    Type: Grant
    Filed: July 22, 1980
    Date of Patent: November 16, 1982
    Inventor: Ronald E. Koehm
  • Patent number: 4345790
    Abstract: Walkers are provided with an upholstered seat which can be suspended from a pair of horizontal members on opposite side of the walker frame, so that the user may rest when not walking. The seat is comfortable, safe and can be stowed on the walker when not needed or completely removed. Such seats can be sold separately and easily retrofitted to existing walkers.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: August 24, 1982
    Inventor: Martha D. Coe
  • Patent number: 4345777
    Abstract: An improved baby carriage is disclosed which includes side arm and handle structures that are interconnected by a folding linkage. The folding linkage can be activated to collapse the carriage width by moving the side structures together through the linkage. The carriage can thus be carried like an umbrella. A front cross arm is provided which is pivotally connected to one side arm structure and connected through a link to an opposite side structure. The link permits one end of the cross arm to swing out away from the side structure to which it is connected to permit widthwise collapsing of the carriage. The carriage also includes adjustable handles which have adjustments for varying the height of the handles above the ground and a pair of arc segments which are connected to a seat back of the carriage which are adjustable to regulate the inclination of the seat back.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: August 24, 1982
    Inventor: Giuseppe Perego
  • Patent number: 4343482
    Abstract: A wheelchair for permitting handicapped persons to use a toilet without dismounting or assistance includes a frame having side portions interconnected by collapsible braces and a seat having a removable center section. The seat is also removable from the frame and includes front and rear braces extending perpendicularly to the side frames and cooperating therewith to rigidify the assembly.
    Type: Grant
    Filed: March 4, 1980
    Date of Patent: August 10, 1982
    Inventor: Dieter F. Wegner
  • Patent number: 4325577
    Abstract: A foldable chair comprising a seat portion made of a sheet of flexible material such as canvas, fabric, leather or plastic supported by a pair of rectangular support frames hinged relative to each other and crossing each other along an intermediary hinge line such as to form a figure X when supported from the ground and viewed from the front. The flexible seat portion is frictionally held at its ends as a result of being wrapped around and passed between a pair of parallel lateral tie members forming part of each support frame or, alternatively, forming part of an armrest in chair structures including a back supporting portion.
    Type: Grant
    Filed: May 22, 1980
    Date of Patent: April 20, 1982
    Inventor: Sacha Thebaud
  • Patent number: 4320818
    Abstract: This brake assembly, for use with a conventional foldable wheelchair, provides a pair of rearwardly extending brake arms connected to adjacent side frames underneath the seat. Each brake arm includes a transverse forward portion pivoted to the side frame and having a brake shoe biased into engagement with a drive wheel. The rearward portion of each brake arm is provided with a post engageable by the wheelchair seat to pivot the brake shoe out of engagement with the wheel when the seat is depressed and moved downwardly by the weight of an occupant. The wheelchair side frames are connected by a tension spring to ensure that the brake is engaged when the wheelchair is unoccupied.
    Type: Grant
    Filed: January 24, 1980
    Date of Patent: March 23, 1982
    Assignee: Bohn & Dawson
    Inventor: Raymond E. Knoche
  • Patent number: 4317581
    Abstract: A baby carriage having a pair of front legs and a pair of rear legs. The pair of rear legs each have an angle bar pivotally connected thereto while the angle bar has a pusher rod body pivotally connected to the other end thereof. With the baby carriage in the opened state, the angle bar is substantially in line with the associated pusher rod body. With the baby carriage in the closed state, the pusher bar body and the associated angle bar are in bent relation to each other, thus reducing the vertical dimension of the baby carriage. Further, in response to the turning movement of the angle bars relative to the rear legs, both the longitudinal and the transverse spacings between the front and rear legs are reduced. In this manner, the baby carriage is folded.
    Type: Grant
    Filed: April 17, 1980
    Date of Patent: March 2, 1982
    Assignee: Kassai Kabushikikaisha
    Inventor: Kenzou Kassai
  • Patent number: 4273350
    Abstract: A folding wheelchair has side frames connected by front, rear and bottom toggle braces which in the folded position permit the side frames to come together. Each toggle brace is preferably formed from a pair of U-shaped elements hingeably connected at the base of the U, the toggle braces co-operating with the framework such that folding is initiated by lifting upwardly of the bottom toggle brace. This is best achieved by a rigid rod linking the front and rear toggle braces and carrying abutment element for engaging with the bottom toggle brace so that folding of the front and rear toggle braces cannot occur until the bottom toggle brace is lifted. The wheelchair may have at least one toggle brace of U-shaped members with the base of each U divided transversely to provide for relative rotational motion between the portions of each U-shaped member. The wheelchair may also have a novel folding footrest.
    Type: Grant
    Filed: March 5, 1979
    Date of Patent: June 16, 1981
    Inventor: Patrick Y. Williams
  • Patent number: 4270795
    Abstract: A chair having two rectangular side members with grooves therein, a folding seat the opposite sides of which slide vertically in said grooves, pivoting cross member supports for the seat, the upper ends of each carrying opposite sides of the seat and the lower ends of each being pivotably affixed to the side members, a folding back, and means pivotably connecting opposing upper extremities of the back to opposite side members and removably positioning the lower opposite extremities of the back at an angle to the vertical whereby the entire chair may be folded to a width approximating the sum of the least dimensions of the two side members.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: June 2, 1981
    Inventor: Joseph V. Warren
  • Patent number: 4266807
    Abstract: A collapsible frame structure for the body of a child's push chair has a pair of side frames between which a collapsible X-frame is pivotally connected. Each side frame has when erected, a pair of upright members and two diagonal members which are pivotally connected to the upright members adjacent their ends. The diagonal members have a pivotal interconnection and each diagonal member has a hinge between this pivotal interconnection and one of the pivotal connections between each diagonal member, and an upright member. Toggles are provided for maintaining the X-frame extended. Extensions of the respective diagonal members provide handles for the push chair and a support for the back of a fabric chair.
    Type: Grant
    Filed: July 19, 1979
    Date of Patent: May 12, 1981
    Inventor: Peter G. Griffin
  • Patent number: 4265466
    Abstract: A baby carriage comprises a pair of left and right hammock supporting rods pivotally and selectively fixedly provided to a pair of left and right pushing rods. A hammock is supported between the pair of hammock supporting rods. The hammock comprises a sheet, and a sitting portion and a back portion made of hard core members fixed along the sheet plane. A hammock shaping member is provided to extend between the pair of pushing rods in sliding contact with the lower surface of the hammock, so that the tilt angle of the back portion is changed in accordance with turning of the hammock supporting rods while the sitting portion slides on the hammock shaping member, whereby the crossing angle between the sitting portion and the back portion is changed.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: May 5, 1981
    Assignee: Kassai Kabushikikaisha
    Inventor: Kenzou Kassai
  • Patent number: 4245849
    Abstract: A collapsible support structure for supporting items, such as chair backs. The support structure, in an erect position, has two vertical members interconnected at their bottoms by a collapsible, preferably horizontal, member. Each end of the horizontal member is also pivotally connected to the other vertical member by a diagonal support member that extends between each end of the horizontal member and an upper portion of the opposite vertical member. When the structure is erect, the diagonal support members form an "X". Stiffening members, which are preferably generally vertical, are spaced from the vertical members and extend between the horizontal member and the diagonal support members. Both the horizontal member and the diagonal support members are formed of a plurality of pivotally interconnected links, at least one of which is modified to maintain the links in a desired angular position when the support structure is erected.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: January 20, 1981
    Assignee: Les Entreprises Rotot Ltee
    Inventor: Robert Thiboutot
  • Patent number: 4243263
    Abstract: An improved collapsible support structure having, in an erect position, a pair of vertical members interconnected by at least one collapsible or foldable support mechanism. The collapsible support mechanism has upper and lower substantially horizontal collapsible connecting members that are interconnected by diagonal support members forming an "X" positioned approximately halfway between the pair of vertical members. Each of the horizontal members is formed of a plurality of pivotally interconnected elements and at least one of the elements of one of the members is modified to maintain a desired angular relationship between the elements. A plurality of the collapsible support structures are combined together or interconnected to form improved collapsible or folding devices.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: January 6, 1981
    Assignee: Les Entreprises Rotot Ltee
    Inventor: Robert Thiboutot
  • Patent number: 4242030
    Abstract: A self-loading, weather protected carrier for raising or lowering an object to and from the top of a motor vehicle and for transporting the object on a motor vehicle. The carrier comprises a horizontally disposed base adapted to be mounted on the roof of a motor vehicle and having a transverse guide affixed thereto, a carriage extendably carried by transverse guide and movable at a vehicle top level between a load/unload position and a travel position, a generally L-shaped tilt frame, pivotally mounted on carriage and rotatable between a generally upright position for loading and unloading the object and a generally horizontal position for storing the object on motor vehicle, a linkage mechanism attached to tilt frame and responsive to the carriage being extended into the load/unload position to rotate tilt frame to upright loading position, and a hoist mounted on the tilt frame for raising and lowering the object.
    Type: Grant
    Filed: August 24, 1978
    Date of Patent: December 30, 1980
    Inventor: Clyde H. Clement
  • Patent number: 4234226
    Abstract: A seating piece, such as a chaise longue, includes a foldable base unit and a seating unit. The base unit includes side frame members that are rotatable into a generally horizontal, collapsible position, and into a laterally spaced-apart, generally vertical position. The seating unit includes a seat section and a back section rotatably joined together to permit adjustment of the seat and back sections relative to each other; the seating unit including connecting means for releasably engaging the side frame members when these frame members are in their generally vertical position and releasably connecting the seating unit to the base unit without preventing rotational movement between the seat and back sections.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: November 18, 1980
    Assignee: Scott Paper Company
    Inventor: Donald B. Colby
  • Patent number: 4232897
    Abstract: A foldable chair frame formed by elongate rigid members which are interpivotted and foldable into a compact bundle of elements. The rigid members include a base formed by a laterally collapsible X-frame, two back members, two lower brace members connected to two upper brace members by knuckle joints, two seat support members and two upwardly extending back rest members. The invention resides in the provision of a laterally collapsible bracing frame located at the lower end of the back members adjacent the X-frame and arranged to be locked to hold the chair in the unfoldable (usable) position while permitting the back rest members to be moved between a forward position, suitable for a person sitting in the chair, to a backward position, suitable for a person reclining in the chair.
    Type: Grant
    Filed: July 6, 1978
    Date of Patent: November 11, 1980
    Assignee: Andrews Maclaren Ltd.
    Inventors: Owen F. Maclaren, deceased, by William L. Barber, executor, by Marie I. Maclaren, executor
  • Patent number: 4200331
    Abstract: A folding chair comprises a pair of U-shaped tubular legs pivoted to each other at middle points of arm portions thereof, a pair of seat supporting members each having end portions connected to corresponding upper end portions of the respective one of said legs, a collapsible seat stretched between said seat supporting members, arm supporting members provided above said seat supporting members, a pair of arms mounted on the respective arm supporting members, a pair of backrest supporting members each mounted over the respective one of said legs so as to be foldable on said seat supporting members, a collapsible backrest stretched between said backrest supporting members, cylindrical connectors inserted into those end portions of said seat supporting members and those upper end portions of said legs which are adjacent to said backrest supporting members for connecting said seat supporting members to said legs, and a pair of backrest inclination adjusting mechanisms provided between said adjacent end portions o
    Type: Grant
    Filed: December 27, 1978
    Date of Patent: April 29, 1980
    Assignee: Uchida Sharyo Co., Ltd.
    Inventor: Suekichi Uchida
  • Patent number: 4140341
    Abstract: A frame for a collapsible wheel chair which permits custom tailoring of the chair to the size of the invalid with only minor modifications. The frame includes telescoping front posts which support horizontally extending arms to which a flexible seat is secured. A pair of cross struts are provided which are rotatably secured to the horizontally extending arms and to the bottom struts of the frame. When the chair is collapsed by bringing the two sides of the chair frame together, the telescoping post permits the horizontal arms to raise a distance determined by the length of the cross struts. Thus, during manufacture, the only parts that need be custom made to accommodate differing sized invalids is the length of the cross struts.
    Type: Grant
    Filed: October 3, 1977
    Date of Patent: February 20, 1979
    Assignee: Theradyne Corporation
    Inventor: Adolph A. Rabe
  • Patent number: 4124188
    Abstract: A combined foot and hinge for a folding chair, stool, or table frame comprising a one-piece part molded of a self-hingeable thermoplastic material having rod sockets with foot pads joined together with a flexure web.
    Type: Grant
    Filed: October 11, 1973
    Date of Patent: November 7, 1978
    Inventor: James F. Machen
  • Patent number: 4118065
    Abstract: An improved folding chair structure having a pair of parallel frame tubes and a pair of parallel support tubes that are laterally foldable, each pair held in respective parallel relationships by front and rear x-braces, and also included is a pair of parallel seat tubes the rear end of which being pivotally attached to a fixed intermediate point along an associated support tube, the structure further including a separate guide movably mounted along intermediate portions of each of the frame tubes, the guides being pivotally attached to the upper ends of associated brace members of both the front and rear x-braces and also to an associated one of the seat tubes whereby the collapsing of the structure by moving the parallel frame, support and seat tubes together causes the guides to move upwardly while the angle between the planes defined by the respective frame and support tubes and between the planes defined by the respective support and seat tubes, decreases.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: October 3, 1978
    Inventor: Mervyn M. Watkins
  • Patent number: 4105244
    Abstract: A foldable furniture unit employing scissors-acting seat frames and upright side frames has restraining members on the seat rail portions of the seat frames adapted to be positioned adjacent portions of the side frames to reduce relative movement between the seat rails and the side frames and thereby stabilize the unit when it is in unfolded condition for use. The restraining members preferably are provided by cap-like members which are also capable of at least partially closing welt and core receiving slots in the seat rails by which a flexible seat web is secured to the seat rails.
    Type: Grant
    Filed: April 12, 1977
    Date of Patent: August 8, 1978
    Assignee: Brown Jordan Company
    Inventor: Donald B. Colby
  • Patent number: 4083598
    Abstract: A rugged, lightweight wheelchair may be readily disassembled and packed into a relatively small size shipping container. The back and footrest sections include pushbutton release elements which separate those sections from the side frames of the chair. The side frames are connected to each other through a scissors mechanism which allows the chair to collapse sideways. The disassembled parts can very easily be placed into a regulation size shipping container. A strong steel spine which includes two welded portions gives the side frames extra strength. Most of the rest of the chair is made up of lightweight metals and fabrics. The front wheels of the wheelchair include a bracket and pin combination which reduces undesirable twisting moments. The wheelchair also includes other improved features which make it exceptionally rugged for a device of such lightweight construction.
    Type: Grant
    Filed: December 30, 1976
    Date of Patent: April 11, 1978
    Assignee: Temco Products, Inc.
    Inventor: Morton I. Thomas
  • Patent number: 4082348
    Abstract: An adjustable wheel chair which facilitates independent seat height and width adjustments to accommodate varying wheel chair size needs. The wheel chair includes a pair of side frame assemblies transversely movable relative to each other between a first closed position with the side frame assembly closely spaced to each other and a second opened position with the side frame assembly spaced apart from each other. The side frame assemblies each include upper and lower frame members and means for selectively adjusting the distance between these members to vary the height of a seat disposed adjacent the upper frame members. First and second cross brace assemblies are pivotally connected to each other generally at their midpoints and mounted transversely between the side frame assemblies in a manner so as to form a collapsible X-like configuration.
    Type: Grant
    Filed: March 1, 1976
    Date of Patent: April 4, 1978
    Assignee: Invacare Corporation
    Inventor: Gilbert E. Haury
  • Patent number: 4076304
    Abstract: To provide for smooth simple operation of an erecting seat, a motor, through a reduction gearing, drives a shaft located transverse of the seat structure, or wheelchair, to the end points of which a crank drive is attached coupled to the seat, the crank drive being arranged to provide, upon erecting or lowering movement of the seat a nonlinear time-displacement function which is effectively sinusoidal, so that movement of the seat between the end positions starts slowly, then is accelerated, and then again slowly reaches the end position. Erecting movement can be assisted by springs, preferably located at either side of the seat.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: February 28, 1978
    Assignee: Valutec AG
    Inventor: Conrad Deucher
  • Patent number: 4065173
    Abstract: A folding chair having two upright sides which can be moved from a spaced apart operative position to a folded position where they are adjacent to one another, the chair also having cross frames between said vertical sides and which can be folded in scissors fashion between chair operative and stored positions. The lower ends of the cross frames are securely anchored in a lower member of the side frames and these lower members are pivotally mounted to the remainder of their side frames. This construction permits the cross frames to pivot with a scissors action and oscillate with the lower member of the side frames, resulting in a sturdy chair with a minimum number of parts for the function obtained.
    Type: Grant
    Filed: October 28, 1975
    Date of Patent: December 27, 1977
    Assignee: Gold Medal, Inc.
    Inventor: Robert S. Gittings
  • Patent number: 4062555
    Abstract: Structure for foldable baby carriage comprises: a pair of four bar linkages each having a seat tube, a back tube with its lower end connected to the rear end of the said seat tube and its upper end extending upward, an arm rest member with its rear end pivoted to the middle portion of the said seat tube and its front end extending forward, and a front leg extending downward with its upper end pivoted to the front end of the said arm rest and its middle portion pivoted to the middle of the said seat tube; two cross frames, the one with its upper ends pivoted to the front ends of the seat tubes and its lower ends pivoted to the lower ends of front legs, and the other with its lower ends pivoted to the rear ends of the seat tubes and its upper ends to the middle portions of the back tubes; two rear legs extending downward each with its upper end pivoted to the middle portion of the arm rest and its middle portion passing through a sliding sleeve pivoted to the rear end of the said seat tube; and two pairs of twi
    Type: Grant
    Filed: November 2, 1976
    Date of Patent: December 13, 1977
    Inventors: Luke Shih-Cheng Peng, Herbert Chia-Chen Yu
  • Patent number: 4030769
    Abstract: A carriage, chair, or similar structure is described having two cross frames which are interpivotally connected by means of a two axis pivot joint and which are held in their unfolded position at a fixed angle with respect to each other by rigid brace members pivotally connected to the sides of the frames and characterized in that the said brace members each comprise three sections, the middle sections provide horizontal rests for arms. The carriage, chair, or similar structure also incorporates a two piece toggle bar, and three piece knuckle strut disposed in front to serve both as a support member for the carriage structure and as a rest or support member for the object, e.g., a passenger, to be placed in the structure.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: June 21, 1977
    Inventors: Luke Shih-Cheng Peng, Herbert Chia-Chen Yu
  • Patent number: 4025088
    Abstract: A folding wheelchair of rugged but relatively lightweight construction has the ability to collapse in the fore and aft directions and laterally. The chair back and arm rests are also foldable to minimize the height of the collapsed chair which is then highly compact. When the chair is unfolded for use, pairs of pivot elements on the foldable leg members of the chair form stops for the arm rests and chair back. Adjustable foot rests are provided on the forward leg members of the chair.
    Type: Grant
    Filed: April 13, 1976
    Date of Patent: May 24, 1977
    Inventor: Barbara G. Rothschild
  • Patent number: 3989295
    Abstract: A folding chair, especially a wheeled push chair for a child, comprises a pair of similar side frames of interpivoted bars and cross-members integral with the side frames, the cross-members having only intermediate hinges which come into coaxial alignment when the side frames are folded and the side frames can then close together like a book.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: November 2, 1976
    Inventor: Curtis A. Sparkes
  • Patent number: 3977721
    Abstract: A flexible back panel for collapsible or folding chairs, the flexible back panel having fastening means so it can be utilized with two different types of folding chairs.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: August 31, 1976
    Assignee: Gold Medal, Inc.
    Inventor: Walter F. Peterson
  • Patent number: 3968991
    Abstract: A collapsible volume frame, when erected, presents in each of two opposite side elevations a side space frame defined by four points which if joined would form a quadrilateral; and presents further space frames in the four other aspects. The side space frames are braced by at least one frame element disposed transversely and articulated to them in a triangulated manner. Releasable means resist collapse of the volume frame. These side and further space frames are foldable so that the volume frame when collapsed forms a bundle.
    Type: Grant
    Filed: October 25, 1973
    Date of Patent: July 13, 1976
    Assignee: Gannet Holdings Limited
    Inventor: Owen Finlay Maclaren
  • Patent number: 3941416
    Abstract: A folding chair having a pair of X-shaped cross leg braces wherein the front and rear upper end portions of the leg braces are respectively connected to the front and rear end portions of a pair of arm rest bars by connecting means so as to cause them to swing relative to each other. When the folding operation of the chair is performed by each connecting means, both arm rest bars can approach each other in a manner that two planes including the respective arm rest bar are parallel to each other. The inclination of the seat can be varied by manually operating the connecting means on the back of the chair.
    Type: Grant
    Filed: June 24, 1974
    Date of Patent: March 2, 1976
    Assignee: Uchida Sharyo Co., Ltd.
    Inventor: Suekichi Uchida
  • Patent number: 3937490
    Abstract: A wheelchair having adjustability to suit several body sizes and deformities in that the width of the seat and back rest panels may be adjusted, the height of the seat and arm rests may be adjusted independently of one another, and the length of the seat may be adjusted.
    Type: Grant
    Filed: June 25, 1974
    Date of Patent: February 10, 1976
    Inventor: Ibrahim Abdelrahim Mohamed Nasr
  • Patent number: RE31760
    Abstract: A baby carriage having a pair of front legs and a pair of rear legs. The pair of rear legs each have an angle bar pivotally connected thereto while the angle bar has a pusher rod pivotally connected to the other end thereof. With the baby carriage in the opened state, the angle bar is substantially in line with the associated pusher rod body. With the baby carriage in the closed state, the pusher bar body and the associated angle bar are in bent relation to each other, thus reducing the vertical dimension of the baby carriage. Further, in response to the turning movement of the angle bars relative to the rear legs, both the longitudinal and the transverse spacings between the front and rear legs are reduced. In this manner, the baby carriage is folded.
    Type: Grant
    Filed: February 10, 1983
    Date of Patent: December 11, 1984
    Assignee: Kassai Kabushikikaisha
    Inventor: Kenzou Kassai