US2818910A - Tightener for folding wheel chair - Google Patents

Tightener for folding wheel chair Download PDF

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Publication number
US2818910A
US2818910A US547767A US54776755A US2818910A US 2818910 A US2818910 A US 2818910A US 547767 A US547767 A US 547767A US 54776755 A US54776755 A US 54776755A US 2818910 A US2818910 A US 2818910A
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Prior art keywords
tightener
wheelchair
side members
members
wheel chair
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US547767A
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Hawkins Dean
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0816—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair
    • A61G5/0825—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/12—Connections or attachments, e.g. turnbuckles, adapted for straining of cables, ropes, or wire
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/04—Wheelchair

Definitions

  • the object of the invention is to provide a tightener for a wheelchair whereby the seat of the chair can be made more comfortable for the user.
  • Another object of the invention is to provide a device for use with a collapsible wheelchair whereby the side members of the wheelchair will be maintained in their proper spaced apart relation, so that the seat of the wheelchair will be more comfortable to the user of the wheelchair.
  • a further object of the invention is to provide a tightener for a folding wheelchair which is extremely simple and inexpensive to manufacture.
  • Figure 1 is a fragmentary perspective view of a wheelchair showing the tightener of the present invention mounted thereon.
  • Figure 2 is an elevational view of the tightener, with parts broken away and in section.
  • Figure 3 is a plan view illustrating the tightener connected to the rails of the wheelchair.
  • Figure 4 is a view illustrating the folding of the tightener, and with parts broken away and in section.
  • the numeral designates a conventional wheelchair of the collapsible or fo-ldable type, and the wheelchair 10 includes the usual traction wheels 11 and caster wheels 12.
  • the wheelchair 10 further includes a pair of side members 14 which are mounted for movement towards and away from each other, and each side member 14 may include a lower tubular rail 15, Figure 1.
  • the present invention is directed to a tightener which is indicated generally by the numeral 16, and the tightener 16 serves to maintain the side members 14 in their spaced apart relation so that the seat of the wheel chair will not accidentally pinch the occupant of the chair whereby the wheelchair can be used in greater comfort.
  • the tightener 16 includes a pair of body members 17 and 18 of similar construction, and each of the body members is provided with a longitudinally extending bore 19. Each bore 19 includes a threaded portion 20, Figure 2.
  • each of the shafts 21 projects into a corresponding bore 19.
  • Each shaft 21 is provided with a threaded portion 22 which threadedly engages the threaded portion 20 of the bore 19.
  • each of the shafts 21 Mounted on the outer end of each of the shafts 21 is a yoke or fork 23, and each yoke 23 includes a pair of spaced apart fingers or legs 24. Thus, each yoke 23 has a substantial U-shape.
  • Each of the fingers 24 terminates in flat end portions 25.
  • the flat end portions 25 are provided with apertures 26 which register with diametrically opposed apertures 27 in the rails 15, Figure 2.
  • the body member :17 may be provided withtantapertured-r ear .29 WhlGhIlSPOSlllOIlGCl between a pair FDf zapertured cars 30 which extend from the body member 18, there being :aipivot ;pin .31 interconnecting the ears 29 and 30 together.
  • the body member 17 is provided with a recess 32 which defines a shoulder 33, and a lip or stop member 34 extends from the body member 18 and the lip 34 is received in the recess 32.
  • the yokes 23 may be arranged as shown in the drawings so that the apertures 26 register with the apertures 27 in the rails 15. Then, the bolts 28 can be extended through these registering apertures so as to connect the yokes to the rails of the side members.
  • the side members 14 will be maintained in their proper spaced apart relation so that the side members will not accidentally move together whereby the seat will be more comfortable to use by the occupant.
  • the seats of the wheelchairs are of flexible material such as leather or canvas and when the side members 14 move together with the person in the wheelchair, the seat will be uncomfortable to sit in.
  • the side members 14 it will be impossible for the side members 14 to move together or towards each other due to the provision of the tightener 16.
  • one of the shafts 21 has a left hand thread while the other shaft 21 has a right hand thread for engaging the body members 17 and 18.
  • the length of the tightener can be adjusted or varied as desired without removing the bolts 28.
  • the members can pivot as shown in Figure 4 about the pin 31, as when the wheelchair is to be folded or collapsed.
  • the holes 27 may be drilled in the chair frame. As shown in Figure 2 there is a space between the rails 15 and the yokes 23 so that sufiicient clearance is provided when the shafts are being pivoted. If desired the tightener may be made rigid instead of collapsible.
  • the tightener of the present invention is adapted to be used for folding the wheelchairs which use or have leather seats or seats made of other soft material.
  • the tightener could be attached to the wheelchair in other ways besides that shown in Figure 1, as for example the tightener may extend between upper portions instead of lower portions of the chair. Thus, with the tightener the seat will be more rigid and the chair will be more comfortable.
  • a collapsible wheelchair comprising a pair of side members mounted for movement towards and away from each other, said side members each embodying lower tubular rails, means extending between said side members for retaining said side members in their open position away from each other, so that the seat of the wheelchair will not accidentally pinch the occupant of the chair whereby the wheelchair can be used in greater comfort, said means comprising first and second body members of similar construction each provided with a longitudinally extending bore, a section of each of said bores being threaded, a shaft extending into each of said bores and having an exteriorly threaded portion threadedly engaging the threaded portion of said bore, a U-shaped yoke mounted on the outer end of each of said shafts and straddling a rail of the side member, each of said yokes embodying a pair of spaced apart fingers each terminating in a flat end portion having an aperture, there being 3 apertures in the rails of said side members registering References Cited in the file of this patent With the apertures in said fingers,

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Description

Jan. 7, 1958 D. HAW-KIN;
TII IGHTENER FOR FOLDING WHEEL CHAIR Filed Nov. 18, 1955 H HM... mm.
n '%a $\m m INVENTOR. pea z flaw/laws amj am a.
ATTORNEYS United States Patent TIGHTENER FOR FOLDING WHEEL CHAIR Dean Hawkins, Conrad, Mont. Application November 18, 1955, Serial No. 547,767 1 Claim. (Cl. 155-30) This invention relates to a wheelchair.
The object of the invention is to provide a tightener for a wheelchair whereby the seat of the chair can be made more comfortable for the user.
Another object of the invention is to provide a device for use with a collapsible wheelchair whereby the side members of the wheelchair will be maintained in their proper spaced apart relation, so that the seat of the wheelchair will be more comfortable to the user of the wheelchair.
A further object of the invention is to provide a tightener for a folding wheelchair which is extremely simple and inexpensive to manufacture.
Other objects and advantages will be apparent during the course of the following description.
In the accompanying drawings, forming a part of this application, and in which like numerals are used to designate like parts throughout the same:
Figure 1 is a fragmentary perspective view of a wheelchair showing the tightener of the present invention mounted thereon.
Figure 2 is an elevational view of the tightener, with parts broken away and in section.
Figure 3 is a plan view illustrating the tightener connected to the rails of the wheelchair.
Figure 4 is a view illustrating the folding of the tightener, and with parts broken away and in section.
Referring in detail to the drawings, the numeral designates a conventional wheelchair of the collapsible or fo-ldable type, and the wheelchair 10 includes the usual traction wheels 11 and caster wheels 12. The wheelchair 10 further includes a pair of side members 14 which are mounted for movement towards and away from each other, and each side member 14 may include a lower tubular rail 15, Figure 1.
The present invention is directed to a tightener which is indicated generally by the numeral 16, and the tightener 16 serves to maintain the side members 14 in their spaced apart relation so that the seat of the wheel chair will not accidentally pinch the occupant of the chair whereby the wheelchair can be used in greater comfort. The tightener 16 includes a pair of body members 17 and 18 of similar construction, and each of the body members is provided with a longitudinally extending bore 19. Each bore 19 includes a threaded portion 20, Figure 2.
There is further provided a pair of shafts 21, and each of the shafts 21 projects into a corresponding bore 19. Each shaft 21 is provided with a threaded portion 22 which threadedly engages the threaded portion 20 of the bore 19.
Mounted on the outer end of each of the shafts 21 is a yoke or fork 23, and each yoke 23 includes a pair of spaced apart fingers or legs 24. Thus, each yoke 23 has a substantial U-shape. Each of the fingers 24 terminates in flat end portions 25. The flat end portions 25 are provided with apertures 26 which register with diametrically opposed apertures 27 in the rails 15, Figure 2. A suitable pin or bolt and nut assembly 28 exice :The. .body :members .17 .and;18 are hingedly connected =together. Thus,.the body member :17 may be provided withtantapertured-r ear .29 WhlGhIlSPOSlllOIlGCl between a pair FDf zapertured cars 30 which extend from the body member 18, there being :aipivot ;pin .31 interconnecting the ears 29 and 30 together. The body member 17 is provided with a recess 32 which defines a shoulder 33, and a lip or stop member 34 extends from the body member 18 and the lip 34 is received in the recess 32.
From the foregoing, it is apparent that there has been provided a tightening device which is especially suitable for use on wheelchairs of the collapsible or folding type. In use, the yokes 23 may be arranged as shown in the drawings so that the apertures 26 register with the apertures 27 in the rails 15. Then, the bolts 28 can be extended through these registering apertures so as to connect the yokes to the rails of the side members. Thus, with the device as shown in Figure 1, the side members 14 will be maintained in their proper spaced apart relation so that the side members will not accidentally move together whereby the seat will be more comfortable to use by the occupant. Thus, the seats of the wheelchairs are of flexible material such as leather or canvas and when the side members 14 move together with the person in the wheelchair, the seat will be uncomfortable to sit in. With the present invention, it will be impossible for the side members 14 to move together or towards each other due to the provision of the tightener 16. As shown in Figure 2, one of the shafts 21 has a left hand thread while the other shaft 21 has a right hand thread for engaging the body members 17 and 18. The length of the tightener can be adjusted or varied as desired without removing the bolts 28. Thus, by adjusting the shafts 21 so that they are the same length before the parts are secured together, the members can pivot as shown in Figure 4 about the pin 31, as when the wheelchair is to be folded or collapsed.
The holes 27 may be drilled in the chair frame. As shown in Figure 2 there is a space between the rails 15 and the yokes 23 so that sufiicient clearance is provided when the shafts are being pivoted. If desired the tightener may be made rigid instead of collapsible. The tightener of the present invention is adapted to be used for folding the wheelchairs which use or have leather seats or seats made of other soft material. The tightener could be attached to the wheelchair in other ways besides that shown in Figure 1, as for example the tightener may extend between upper portions instead of lower portions of the chair. Thus, with the tightener the seat will be more rigid and the chair will be more comfortable.
I claim:
A collapsible wheelchair comprising a pair of side members mounted for movement towards and away from each other, said side members each embodying lower tubular rails, means extending between said side members for retaining said side members in their open position away from each other, so that the seat of the wheelchair will not accidentally pinch the occupant of the chair whereby the wheelchair can be used in greater comfort, said means comprising first and second body members of similar construction each provided with a longitudinally extending bore, a section of each of said bores being threaded, a shaft extending into each of said bores and having an exteriorly threaded portion threadedly engaging the threaded portion of said bore, a U-shaped yoke mounted on the outer end of each of said shafts and straddling a rail of the side member, each of said yokes embodying a pair of spaced apart fingers each terminating in a flat end portion having an aperture, there being 3 apertures in the rails of said side members registering References Cited in the file of this patent With the apertures in said fingers, securing elements ex- UNITED STATES PATENTS tending through send registering apertures for malntarmng the yoke connected to the rail, ears connected to said 370,063 Judson P 20, 1887 body members, a pin pivotally connecting the ears of said 909,411 Hockney 9 body members together, there being a recess in one of 1,002,001 Short Allg- 29, 1911 said body members defining a shoulder, and a lip extend- 216051523 Llewellyn 5, 1952 ing from the other of said body members for engaging 26491309 Delssner 18, 1953 said recess and shoulder, there being a space between the rails and the yokes so that sufiicient clearance is provided 10 when the shafts are being pivoted.
US547767A 1955-11-18 1955-11-18 Tightener for folding wheel chair Expired - Lifetime US2818910A (en)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133742A (en) * 1962-10-08 1964-05-19 T H Conklin Stairclimbing wheelchair
US3136272A (en) * 1962-03-15 1964-06-09 Murray Liff Collapsible stools and chairs
US3485510A (en) * 1967-10-16 1969-12-23 Julio Merlan Self-propelling and steering attachment apparatus for a wheel chair
US3839754A (en) * 1972-12-29 1974-10-08 A Hooper Folding baby cot
US3887228A (en) * 1973-11-28 1975-06-03 Philip E Ingerson Foldable wheelchair and kit therefor
US3891268A (en) * 1974-05-10 1975-06-24 A Hadley Taylor Ramp attachment for wheel chair
US4264085A (en) * 1979-04-20 1981-04-28 Frank Volin Wheelchair convenience attachments
US4484780A (en) * 1981-10-14 1984-11-27 W. A. Thompson & Company Limited Leg rest hanger
EP0127511A2 (en) * 1983-05-30 1984-12-05 Lacoste, Sa Foldable wheel chair
US4553770A (en) * 1983-07-06 1985-11-19 Lyman Roger T Wheelchair attachment
WO1987002887A1 (en) * 1985-11-15 1987-05-21 John David Flanagan Support strut for a wheelchair
US4690364A (en) * 1986-04-14 1987-09-01 Constantin Bruce J Wheelchair restraining device
US4708219A (en) * 1986-05-09 1987-11-24 Cresswell Thomas A Disassemblable sulky for attachment to a steerable front wheel assembly condition
US4925242A (en) * 1989-09-01 1990-05-15 Scott Orthotic Labs, Inc. Adjustable lumbar back support system for a wheelchair
US5149120A (en) * 1991-09-05 1992-09-22 Halliday Thomas S Wheelchair lock
US5217239A (en) * 1989-01-20 1993-06-08 Linido B.V. Wheelchair
US5344265A (en) * 1992-08-11 1994-09-06 State Of Oregon, Acting By And Through The State Board Of Higher Education On Behalf Of Osu Securement system for a rollable mobility aid
US6231016B1 (en) * 1999-06-09 2001-05-15 Beth A. Slone Medical support carrier
US20040222603A1 (en) * 2003-05-09 2004-11-11 Guy Pichette Auxiliary wheelchair
US20050019125A1 (en) * 2003-05-27 2005-01-27 Panzarella Thomas A. Device for securing a personal-transport vehicle to a mounting surface
US20110011907A1 (en) * 2007-07-11 2011-01-20 Freedom Sciences, Llc Devices for securing personal-transport vehicles to mounting surfaces
US7878523B1 (en) * 2008-05-13 2011-02-01 Ferch Herman D Wheelchair position control
US20190240091A1 (en) * 2018-02-07 2019-08-08 Ronald Dee Perkins Transferable wheelchair width adjuster
US10420686B2 (en) * 2015-03-05 2019-09-24 Spinergy Inc. Rotatable swing arm stabilizer assembly for folding wheelchairs
US11534000B2 (en) * 2019-11-24 2022-12-27 Westfield Outdoor, Inc. Foldable chair with springs

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US370063A (en) * 1887-09-20 Ambulance
US909411A (en) * 1907-11-25 1909-01-12 Douglas Dyrenforth Wheel-chair.
US1002001A (en) * 1910-06-21 1911-08-29 Horace Leonard Short Tension-adjusting coupling.
US2605523A (en) * 1945-02-03 1952-08-05 Armstrong Bray & Co Belt connector
US2649309A (en) * 1951-06-08 1953-08-18 Douglas D Deissner Foldable wheel chair and steerable wheel attachment therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US370063A (en) * 1887-09-20 Ambulance
US909411A (en) * 1907-11-25 1909-01-12 Douglas Dyrenforth Wheel-chair.
US1002001A (en) * 1910-06-21 1911-08-29 Horace Leonard Short Tension-adjusting coupling.
US2605523A (en) * 1945-02-03 1952-08-05 Armstrong Bray & Co Belt connector
US2649309A (en) * 1951-06-08 1953-08-18 Douglas D Deissner Foldable wheel chair and steerable wheel attachment therefor

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3136272A (en) * 1962-03-15 1964-06-09 Murray Liff Collapsible stools and chairs
US3133742A (en) * 1962-10-08 1964-05-19 T H Conklin Stairclimbing wheelchair
US3485510A (en) * 1967-10-16 1969-12-23 Julio Merlan Self-propelling and steering attachment apparatus for a wheel chair
US3839754A (en) * 1972-12-29 1974-10-08 A Hooper Folding baby cot
US3887228A (en) * 1973-11-28 1975-06-03 Philip E Ingerson Foldable wheelchair and kit therefor
US3891268A (en) * 1974-05-10 1975-06-24 A Hadley Taylor Ramp attachment for wheel chair
US4264085A (en) * 1979-04-20 1981-04-28 Frank Volin Wheelchair convenience attachments
US4484780A (en) * 1981-10-14 1984-11-27 W. A. Thompson & Company Limited Leg rest hanger
EP0127511A2 (en) * 1983-05-30 1984-12-05 Lacoste, Sa Foldable wheel chair
FR2546746A1 (en) * 1983-05-30 1984-12-07 Lacoste Sa Ets FOLDING WHEELCHAIR
EP0127511A3 (en) * 1983-05-30 1985-10-09 Lacoste, Sa Foldable wheel chair
US4553770A (en) * 1983-07-06 1985-11-19 Lyman Roger T Wheelchair attachment
WO1987002887A1 (en) * 1985-11-15 1987-05-21 John David Flanagan Support strut for a wheelchair
US4690364A (en) * 1986-04-14 1987-09-01 Constantin Bruce J Wheelchair restraining device
US4708219A (en) * 1986-05-09 1987-11-24 Cresswell Thomas A Disassemblable sulky for attachment to a steerable front wheel assembly condition
US5217239A (en) * 1989-01-20 1993-06-08 Linido B.V. Wheelchair
US4925242A (en) * 1989-09-01 1990-05-15 Scott Orthotic Labs, Inc. Adjustable lumbar back support system for a wheelchair
US5149120A (en) * 1991-09-05 1992-09-22 Halliday Thomas S Wheelchair lock
US5344265A (en) * 1992-08-11 1994-09-06 State Of Oregon, Acting By And Through The State Board Of Higher Education On Behalf Of Osu Securement system for a rollable mobility aid
US6231016B1 (en) * 1999-06-09 2001-05-15 Beth A. Slone Medical support carrier
US20040222603A1 (en) * 2003-05-09 2004-11-11 Guy Pichette Auxiliary wheelchair
US7063344B2 (en) * 2003-05-09 2006-06-20 Guy Pichette Auxiliary wheelchair
US20050019125A1 (en) * 2003-05-27 2005-01-27 Panzarella Thomas A. Device for securing a personal-transport vehicle to a mounting surface
US7108466B2 (en) 2003-05-27 2006-09-19 Cook Technologies, Inc. Device for securing a personal-transport vehicle to a mounting surface
US20060269378A1 (en) * 2003-05-27 2006-11-30 Cook Technologies, Inc. Device for securing a personal-transport vehicle to a mounting surface
US7431546B2 (en) 2003-05-27 2008-10-07 Cook Technologies, Inc. Device for securing a personal-transport vehicle to a mounting surface
US20110011907A1 (en) * 2007-07-11 2011-01-20 Freedom Sciences, Llc Devices for securing personal-transport vehicles to mounting surfaces
US7878523B1 (en) * 2008-05-13 2011-02-01 Ferch Herman D Wheelchair position control
US10420686B2 (en) * 2015-03-05 2019-09-24 Spinergy Inc. Rotatable swing arm stabilizer assembly for folding wheelchairs
US11045367B2 (en) 2015-03-05 2021-06-29 Spinergy, Inc. Rotatable swing arm stabilizer for folding wheelchairs
US20220008266A1 (en) * 2015-03-05 2022-01-13 Spinergy, Inc. Rotatable swing arm stabilizer assembly for folding wheelchairs
US11877964B2 (en) * 2015-03-05 2024-01-23 Spinergy, Inc. Rotatable swing arm stabilizer assembly for folding wheelchairs
US20190240091A1 (en) * 2018-02-07 2019-08-08 Ronald Dee Perkins Transferable wheelchair width adjuster
US11534000B2 (en) * 2019-11-24 2022-12-27 Westfield Outdoor, Inc. Foldable chair with springs

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