US3730584A - Foldable chair frame assembly - Google Patents

Foldable chair frame assembly Download PDF

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Publication number
US3730584A
US3730584A US00218705A US3730584DA US3730584A US 3730584 A US3730584 A US 3730584A US 00218705 A US00218705 A US 00218705A US 3730584D A US3730584D A US 3730584DA US 3730584 A US3730584 A US 3730584A
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United States
Prior art keywords
frame assembly
tubes
chair frame
rods
foldable chair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00218705A
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English (en)
Inventor
S Uchida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uchida Sharyo Co Ltd
Original Assignee
Uchida Sharyo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uchida Sharyo Co Ltd filed Critical Uchida Sharyo Co Ltd
Application granted granted Critical
Publication of US3730584A publication Critical patent/US3730584A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C4/00—Foldable, collapsible or dismountable chairs
    • A47C4/28—Folding chairs with flexible coverings for the seat or back elements
    • A47C4/283—Folding chairs with flexible coverings for the seat or back elements foldable side to side only

Definitions

  • ABSTRACT [30] Foreign Application Priority Data
  • a foldable chair frame assembly comprising a pair of Jan 21 971 la an 46/1746 vertically extcndable side frame members and a pair I p of connection member assemblies connecting said side 52 us.
  • (:1 ..297/45 248/436 ha'nn members aFPmach each 51 1 1111.0 A47C 4/48 other when the chair is folded up and, when one 581 Field of Search ..297/45,42, 44; on the Chair, expanding in form of the letter X, 24 43 43 43 thereby reinforcing side frame members against the load applied thereon by the sitter.
  • This invention relates to a chair frame assembly and more particularly to a foldable chair frame assembly.
  • FIGS. 1 to 4 illustrate chairs using a foldable chair frame assembly according to this invention: FIG. 1 is a perspective view, partly in section, of an expanded chair; FIG. 2 is a perspective view of a folded chair; FIG. 3 is a perspective view, partly in section, of a chair used as a stool; and FIG. 4 is a plan view with part of FIG. 3 enlarged.
  • each side frame member comprises a bottom tube 2 having both ends bent upward at an angle of substantially 90 and guide rods 3 each coaxially connected at the lower end to said bent end portion of the bottom tube 2.
  • Said guide rod 3 has a smaller outer diameter than that of the end portion of the bottom tube 2, so that at that part of the guide rod 3 which contacts the end portion of the bottom tube 2 is formed a stepped or stopper portion 4.
  • Said guide rod 3 is slidably inserted into a leg tube 5 slightly shorter than said guide rod 3 and capable of sliding vertically along its peripheral surface.
  • the leg tube 5 has its lower end limited in its downward slide by the aforesaid stepped or stopper portion 4, and its upper end disposed a little below the top end of said guide rod 3.
  • a beam rod 6 is horizontally disposed between the upper ends of the forward and rear leg tubes 5 on each side of the chair.
  • both lower ends 8 of a vertically reverse U-shaped arm tube 7 outwardly rotatable through an angle of 180 so as to be folded.
  • the forward and rear upright portions 8 of each arm tube 7 are provided at the bottom ends with pins 9 horizontally projecting in the mutually facing direction above the leg tubes 5.
  • an upwardly projecting bearing member 10 into which there is inserted the aforesaid pin 9 through a spring washer 11, thereby permitting the outward folding of the arm tube 7.
  • an arm rest plate 12 made of wood or plastics material.
  • Behind both arm tubes 7 are set upright support pillars 13 coaxially and integrally with the rear upright portions of both arm tubes 7, said support pillars 13 being intended to have a back cloth 17 stretched across them.
  • connection rod assembly 14 represents a pair of connection rod assemblies arranged at a prescribed space.
  • Said connection rod assembly 14 is formed of a pair of connection rods 16 which are pivoted by a common shaft pin 15 at the central part, which are so bent as to be disposed horizontal when the chair legs are opened, said connection rod assembly 14 taking the form of the letter X.
  • Each connection rodassembly 14 is connected at the upper ends to the beam rods 6 of said side frame membets 1 and at the lower ends to the bottom leg tubes 2 of said side frame members 1.
  • the paired connection rod assemblies 4 can rotate about the aforesaid central part to hold or expand the frame assembly.
  • the flexible back cloth 17 made of canvas or PVC (polyvinyl chloride) leather with said support pillars 13 inserted into the hollow lug portions 17a formed on both sides of said back cloth.
  • the sheet fabric 18 made of the same material as that of the back cloth 17.
  • the paired side frame members are joined by said connection rod assembly 14 taking theform of the letter X. Accordingly the load applied by the sitters weight so acts as to strengthen connection between the bottom tubes 2 and arm tubes 7'.
  • the. guide rods 3 connected to the bottom tubes 2 are disposed perpendicular to the floor surface, namely, are aligned with the direction in which the sitters weight is applied, thereby stabilizing the chair to the sitter.
  • the back cloth 17 is first taken off one of the support pillars 13.
  • the horizontal bottom tube 2 of one side frame member I stepped down, for example, with a foot, there is pulled up by hand the arm tube 7 or arm plate 12 of said side frame member 1 or another part of the frame member 1 connected to said arm tube 7, for example, the leg tube 5 or beam tube 6.
  • the leg tube 5 of the aforesaid stepped down side frame member v1 slides upward along the guiderods 3.
  • the leg tube 5 of the other side frame member 1 similarly slides upward along the associated guide rod 3 due to the connection rod assemblies 14 being rotated about the common shaft pin 15.
  • said rotation causes said other side frame member 1 to move up to the first mentioned stepped down side frame member 1, thus finally bringing the chair as a I whole to a flat folded state with said two side frame members 1 closely drawn toeach other.
  • the arm tubes 7 are rotated outward through an angle of as illustrated in FIG. 2, thereby completing the folding operation.
  • the back cloth 17 is taken off one of the support pillars l3, and the chair is brought to a folded state shown in FlG. 2 by the previously described folding operation. Then the beam rods 6 are gripped by hand to separate both side frame members 1, causing the chair legs to be opened with the top ends of the guide rods 3 slightly projected from those of the leg tubes 5.
  • the back cloth 17 may be stretched across the rear guide rods 3.
  • said rear guide rods 3 are preferred to be slightly longer than the forward ones.
  • a foldable chair frame assembly comprising a pair of spatially disposed side frame members consisting of bottom leg tubes each having both end portions bent upward, guide rods having a smaller diameter than-said bent end portions and connected thereto at the lower end with a stopper portion formed at that part of said guide rods which is contacted by said bent end portions, two pairs of forward and rear leg tubes slightly shorter than said guide rods inserted there-through and slidable along said guide rods, the sliding of said leg tubes in one direction being limited by having the lower ends contacted by said stopper portions, a pair of beam rods each extended across the upper ends of each pair of said forward and rear leg tubes, and arm tubes outwardly swingable through an angle of 180 with the downwardly bent portions pivotally connected to the upper ends of said forward and rear leg tubes; and spatially disposed connection means each having a pair of connection rods pivotally connected and acrossed to each other at the center, the connection rod being connected at the bottom end to the bottom tube of one of said side frame members and at the upper end to the beam
  • the foldable chair frame assembly according to claim 2 which further has a seat cloth stretched across the two beam rods and a back cloth stretched across the two pillars.
  • connection rod assemblies have a common shaft pin for pivotally connecting the pair of connection rods constituting said connection rod assemblies.
  • each of said connection rod has a central part which is so bent as to be disposed horizontal when the chair frame assembly is expanded.

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  • Special Chairs (AREA)
US00218705A 1971-01-21 1972-01-18 Foldable chair frame assembly Expired - Lifetime US3730584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46001746A JPS506825B1 (it) 1971-01-21 1971-01-21

Publications (1)

Publication Number Publication Date
US3730584A true US3730584A (en) 1973-05-01

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ID=11510113

Family Applications (1)

Application Number Title Priority Date Filing Date
US00218705A Expired - Lifetime US3730584A (en) 1971-01-21 1972-01-18 Foldable chair frame assembly

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US (1) US3730584A (it)
JP (1) JPS506825B1 (it)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941416A (en) * 1974-02-19 1976-03-02 Uchida Sharyo Co., Ltd. Folding chair
EP0126964A2 (en) * 1983-05-27 1984-12-05 Royal Plastic S.A. Dismountable folding chair
EP0209955A2 (fr) * 1985-07-24 1987-01-28 Jean Balencon Siège pliant individuel et siège multiple réalisé à partir de celui-ci
US4775182A (en) * 1987-10-09 1988-10-04 Von Hoffman Brant Foldable beach chair or the like
US4890882A (en) * 1988-12-27 1990-01-02 Harrington Christopher T Collapsible beach chair
US6540290B2 (en) * 2001-07-31 2003-04-01 Lausan Chung-Hsin Liu Folding chairs
EP1790254A1 (en) * 2005-11-23 2007-05-30 Armet S.p.A. Chair with tubular support frame
US20100171342A1 (en) * 2009-01-02 2010-07-08 Libin Chen Telescoping foldable chair
US20100237665A1 (en) * 2009-03-17 2010-09-23 Grace Daniel R Two-way foldable chair
US20110018312A1 (en) * 2009-07-21 2011-01-27 Grace Daniel R Unifoldable reclining chair
US20110155069A1 (en) * 2009-12-29 2011-06-30 Timothy Edmonds Hammock for a cat or other domestic animal
US20130106145A1 (en) * 2011-10-31 2013-05-02 Zhaosheng Chen Folding Chair
US8449026B1 (en) 2010-05-07 2013-05-28 Gilbert Michael Gutierrez Convertible seating assembly
US20180027970A1 (en) * 2016-07-26 2018-02-01 Zenithen USA. LLC. d/b/a Z Company Folding chair with back rest
US20180168898A1 (en) * 2016-12-15 2018-06-21 The World's Only Carry-On Wheel Chair, Llc Wheeled chair
US10362875B2 (en) * 2013-08-20 2019-07-30 Gci Outdoor, Inc. Easy folding cross brace design
US10420422B2 (en) 2016-07-29 2019-09-24 L&P Property Management Company Recliner chair having improved wall clearance and recline linkage with projected back pivot point
US10653243B2 (en) 2016-07-29 2020-05-19 Leggett & Platt, Inc. Rocker/glider recline linkage with projected back pivot point
IT201800010836A1 (it) * 2018-12-05 2020-06-05 Dv8 Id S R L Seggiola componibile
US10874217B2 (en) 2017-10-18 2020-12-29 Gci Outdoor, Inc. Collapsible and portable rocking chair
US11266245B2 (en) 2016-07-29 2022-03-08 Leggett & Platt, Inc. Rocker/glider recliner linkage with projected back pivot point
US11364163B1 (en) 2021-09-28 2022-06-21 Jay Foonberg Transport chair arranged for storage in passenger aircraft carry-on luggage
US11534000B2 (en) 2019-11-24 2022-12-27 Westfield Outdoor, Inc. Foldable chair with springs

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US703077A (en) * 1901-08-29 1902-06-24 Charles N Goodmen Folding chair.
US1799029A (en) * 1930-05-12 1931-03-31 Benjamin H Smith Folding chair
US2096237A (en) * 1936-02-12 1937-10-19 Kittle Mfg Company Folding chair
US2354949A (en) * 1940-12-23 1944-08-01 Ducavich Sam Folding wheel chair
US2460459A (en) * 1947-03-13 1949-02-01 Al R Brooks Folding article
US2485016A (en) * 1947-02-14 1949-10-18 Gendron Wheel Company Invalid wheel chair

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US703077A (en) * 1901-08-29 1902-06-24 Charles N Goodmen Folding chair.
US1799029A (en) * 1930-05-12 1931-03-31 Benjamin H Smith Folding chair
US2096237A (en) * 1936-02-12 1937-10-19 Kittle Mfg Company Folding chair
US2354949A (en) * 1940-12-23 1944-08-01 Ducavich Sam Folding wheel chair
US2485016A (en) * 1947-02-14 1949-10-18 Gendron Wheel Company Invalid wheel chair
US2460459A (en) * 1947-03-13 1949-02-01 Al R Brooks Folding article

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941416A (en) * 1974-02-19 1976-03-02 Uchida Sharyo Co., Ltd. Folding chair
EP0126964A2 (en) * 1983-05-27 1984-12-05 Royal Plastic S.A. Dismountable folding chair
EP0126964A3 (en) * 1983-05-27 1985-09-18 Royal Plastic S.A. Dismountable folding chair
US4566731A (en) * 1983-05-27 1986-01-28 Royal Plastic S.A. Dismountable folding chair
EP0209955A2 (fr) * 1985-07-24 1987-01-28 Jean Balencon Siège pliant individuel et siège multiple réalisé à partir de celui-ci
FR2585226A1 (fr) * 1985-07-24 1987-01-30 Balencon Jean Siege pliant individuel et siege multiple realise a partir de celui-ci
EP0209955A3 (en) * 1985-07-24 1987-09-23 Jean Balencon Individual folding seat and multiple seat realized by making use of it
US4775182A (en) * 1987-10-09 1988-10-04 Von Hoffman Brant Foldable beach chair or the like
US4890882A (en) * 1988-12-27 1990-01-02 Harrington Christopher T Collapsible beach chair
US6540290B2 (en) * 2001-07-31 2003-04-01 Lausan Chung-Hsin Liu Folding chairs
EP1790254A1 (en) * 2005-11-23 2007-05-30 Armet S.p.A. Chair with tubular support frame
US20100171342A1 (en) * 2009-01-02 2010-07-08 Libin Chen Telescoping foldable chair
US20100237665A1 (en) * 2009-03-17 2010-09-23 Grace Daniel R Two-way foldable chair
US20110018312A1 (en) * 2009-07-21 2011-01-27 Grace Daniel R Unifoldable reclining chair
US8864222B2 (en) 2009-07-21 2014-10-21 Daniel R. Grace Unifoldable reclining chair
US20110155069A1 (en) * 2009-12-29 2011-06-30 Timothy Edmonds Hammock for a cat or other domestic animal
US8449026B1 (en) 2010-05-07 2013-05-28 Gilbert Michael Gutierrez Convertible seating assembly
US20130106145A1 (en) * 2011-10-31 2013-05-02 Zhaosheng Chen Folding Chair
US8678490B2 (en) * 2011-10-31 2014-03-25 Zhaosheng Chen Folding chair
US10362875B2 (en) * 2013-08-20 2019-07-30 Gci Outdoor, Inc. Easy folding cross brace design
US20180027970A1 (en) * 2016-07-26 2018-02-01 Zenithen USA. LLC. d/b/a Z Company Folding chair with back rest
US11266245B2 (en) 2016-07-29 2022-03-08 Leggett & Platt, Inc. Rocker/glider recliner linkage with projected back pivot point
US11730267B2 (en) 2016-07-29 2023-08-22 L&P Property Management Company Rocker/glider recliner linkage with projected back pivot point
US10420422B2 (en) 2016-07-29 2019-09-24 L&P Property Management Company Recliner chair having improved wall clearance and recline linkage with projected back pivot point
US10653243B2 (en) 2016-07-29 2020-05-19 Leggett & Platt, Inc. Rocker/glider recline linkage with projected back pivot point
US11376173B2 (en) * 2016-12-15 2022-07-05 The World's Only Carry-On Wheel Chair, Llc Wheeled chair
US20180168898A1 (en) * 2016-12-15 2018-06-21 The World's Only Carry-On Wheel Chair, Llc Wheeled chair
US11833088B1 (en) 2016-12-15 2023-12-05 Jay Foonberg Wheeled chair
US10874217B2 (en) 2017-10-18 2020-12-29 Gci Outdoor, Inc. Collapsible and portable rocking chair
WO2020115627A1 (en) * 2018-12-05 2020-06-11 Dv8 Id S.R.L. Modular chair
IT201800010836A1 (it) * 2018-12-05 2020-06-05 Dv8 Id S R L Seggiola componibile
US11918125B2 (en) 2018-12-05 2024-03-05 Dv8 Id S.R.L. Modular chair
US11534000B2 (en) 2019-11-24 2022-12-27 Westfield Outdoor, Inc. Foldable chair with springs
US11364163B1 (en) 2021-09-28 2022-06-21 Jay Foonberg Transport chair arranged for storage in passenger aircraft carry-on luggage
US11813210B1 (en) 2021-09-28 2023-11-14 Jay Foonberg Transport chair arranged for storage in passenger aircraft carry-on luggage

Also Published As

Publication number Publication date
JPS506825B1 (it) 1975-03-18

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