US3525549A - Detachable chair back - Google Patents

Detachable chair back Download PDF

Info

Publication number
US3525549A
US3525549A US746058A US3525549DA US3525549A US 3525549 A US3525549 A US 3525549A US 746058 A US746058 A US 746058A US 3525549D A US3525549D A US 3525549DA US 3525549 A US3525549 A US 3525549A
Authority
US
United States
Prior art keywords
chair
links
seat
link
brackets
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
US746058A
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English (en)
Inventor
Edward M Knabusch
Edwin J Shoemaker
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.)
La Z Boy Inc
Original Assignee
La Z Boy Inc
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 La Z Boy Inc filed Critical La Z Boy Inc
Application granted granted Critical
Publication of US3525549A publication Critical patent/US3525549A/en
Anticipated expiration legal-status Critical
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
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/42—Supports for the head or the back for the back of detachable or loose type

Definitions

  • the chair back has a slide bracket on each side edge composed of a web and an inwardly presenting channel section at the sides and top. Apertures in the web receive securing elements by which the brackets are secured on the back.
  • a locking arm is pivoted to each bracket which draws them into secured fixed relation to upwardly extending links on the chair which receives the brackets when moved downwardly thereover. The locking arms secure the brackets and links against separation and retain them in firm fixed relation against any movement when in use. By releasing the locking arms the back may be removed and placed upon the seat to substantially reduce the space occupied by the chair in storage and when transported.
  • FIG. 1 is a view of a chair with the back removed and resting upon the seat;
  • FIG. 2 is an enlarged broken view of the chair, seat and back when in joined relationship
  • FIG. 3 is a broken view of the structure illustrated in FIG. 2 with the back separated from the seat;
  • FIG. 4 is a sectional view of the structure illustrated in FIG. 2, taken on the line 44 thereof, and
  • FIG. 5 is a broken sectional view of the structure illustrated in FIG. 2, taken on the line 55 thereof.
  • a chair is supported on a base 11 having a cushion 12 and a pair of spaced arms 13.
  • a back 14, as illustrated in FIG. 1, rests upon the cushion 12 between the arms 13 in knocked-down relation for storing and shipping.
  • the seat 12 will be urged forwardly when the back 14 is tilted backwardly, but it is to be understood that the back may be separated from the seat when the seat is in fixed relation to the chair frame.
  • an S-shaped link 15 is secured to the inner face of the arms 13 by a link 16 3,525,549 Patented Aug. 25, 1970 which is attached thereby by securing elements 20.
  • Upstanding ends 17 of the links 15 are pivotally secured to the top end of the links 16 by rivets 18.
  • the curved portion of the links 15 is connected by a pivot 19 to a bracket 21 secured at opposite sides of the seat by screws 22.
  • the lower end of the links 15 is secured by a pivot 23 to a laminated link 24. which has a slot 25 therein.
  • the bracket 21 has an extending end 26 containing an aperture through which a bolt 27 extends.
  • the bolt has a washer thereon containing a pair of fingers 28- which extends within the slot 25 with washers 29 of plastic or like material disposed between the laminations and the outer faces of the link 24.
  • a spring 31 and a thumb nut 32 is applied to the threaded end of the bolt 27 so that a pressure can be applied between the extending end 26 and the laminations of the link 24 for regulating the amount of force required to move the back to different positions and for retaining it therein.
  • the opposite sides of a frame 33 of the back 14 has a slide bracket 34 secured thereto by screws 35 in the conventional manner.
  • the slide bracket has a web portion 36 and inwardly presenting channel sections 37 at the sides and a section 38 at the top of arcuate shape following the arcuate shape of the top of the upstanding link ends 17.
  • the bottom of the side channel section may be flared outwardly at 39 to readily receive the upstanding ends 17 of the links 15.
  • the web portion 36 is extended at 41 below the top channel section 38 for supporting a locking arm 42 when secured thereon by a rivet 43 and a sinuous spring washer 44.
  • the locking arm has an offset cam portion 45 which extends within a notch 46 in the edge of the upstanding link ends 17 for clamping the slide brackets thereto and locking them against endwise displacement.
  • the cam portion 45 forces the link end 17 against the opposite side channel section of the slide brackets to firmly secure the brackets to the link without chance of movement occurring therebetween.
  • the chair is shipped in knock-down condition, as illustrated in FIG. 1, and it is only necessary to lift the back 14 and insert the slide brackets 34 downwardly over the upstanding ends 17 of thelinks 15 to apply the back to the seat. Thereafter, the downward movement of the locking arms 42 will clamp the slide brackets in firm fixed relation to the ends of the links 15.
  • the movement of the cam portion 45 in the notch 46 in the edge of the link 15 firmly draws the channel sections-37 opposite to the locking arms against the opposite edges of the links 15 in firm fixed relation throughout the length thereof.
  • the location of the cam portion 45 in the slot 46 prevents any upward movement of the back relative to the links 15' while the locking arms are retained in position by the sinuous spring washer 44. After attachment the back is fixed to the chair frame or seat in a' rigid manner against any movement when in use.
  • a chair having a frame a seat and a back, a slide bracket at each side of said back, an upstanding link at each side of the frame which receives said slide brackets, and locking means on said slide brackets for securely locking the brackets to said upstanding links.
  • the slide bracket has a web and facing channel sections at the sides andtop, and securing means for attaching the web of the slide brackets to the side edges of the back.
  • said locking means embodies a locking arm pivoted to each said slide bracket which firmly secures the bracket to the upstanding links after the brackets have been applied thereto.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US746058A 1968-07-19 1968-07-19 Detachable chair back Expired - Lifetime US3525549A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74605868A 1968-07-19 1968-07-19

Publications (1)

Publication Number Publication Date
US3525549A true US3525549A (en) 1970-08-25

Family

ID=24999318

Family Applications (1)

Application Number Title Priority Date Filing Date
US746058A Expired - Lifetime US3525549A (en) 1968-07-19 1968-07-19 Detachable chair back

Country Status (9)

Country Link
US (1) US3525549A (de)
AT (1) AT293668B (de)
BE (1) BE735207A (de)
DE (1) DE1934876A1 (de)
FR (1) FR1604433A (de)
GB (1) GB1208705A (de)
MY (1) MY7300438A (de)
NL (1) NL149072B (de)
SE (1) SE364435B (de)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973798A (en) * 1972-09-25 1976-08-10 La-Z-Boy Chair Company Deflectable chair back
US4082355A (en) * 1977-03-11 1978-04-04 La-Z-Boy Chair Company Lockable back on a sofa bed
US4804227A (en) * 1986-12-15 1989-02-14 Ahrend-Cirkel B.V. Point-synchronized adjustment device for office chairs
US4932720A (en) * 1988-11-14 1990-06-12 Sherman Ronald K Modular furniture system
EP0488654A1 (de) * 1990-11-30 1992-06-03 La-Z-Boy Chair Company Abnehmbare Rückenlehne
US5135284A (en) * 1991-01-09 1992-08-04 Leggett & Platt, Incorporated Knock-down chair back bracket
US5269589A (en) * 1991-01-25 1993-12-14 Bertrand Faure Ltd. Snap lock fitting for automotive seat backs
US5288126A (en) * 1991-10-11 1994-02-22 La-Z-Boy Chair Company Modular reclining/tilt chair and method
US5478133A (en) * 1993-02-03 1995-12-26 L&P Property Management Company Motion furniture construction
US5505522A (en) * 1994-01-31 1996-04-09 La-Z-Boy Chair Company Deflectable seat back
US5890765A (en) * 1996-06-07 1999-04-06 La-Z-Boy Incorporated Health care reclining chair
US6007155A (en) * 1997-07-14 1999-12-28 Honda Giken Kogyo Kabushiki Kaisha Anti-rattle guide assembly for supporting an armrest or other structure moveable between extended and retracted positions
US6474743B1 (en) * 2000-09-18 2002-11-05 Crown Therapeutics, Inc. Wheelchair back support assembly
US6623080B2 (en) 2001-08-09 2003-09-23 Roho, Inc. Cellular cushion vehicle seat system
US6687937B2 (en) 2000-06-01 2004-02-10 Crown Therapeutics, Inc. Moisture drying mattress with separate zone controls
US6698840B1 (en) * 2002-08-12 2004-03-02 Shin Yeh Enterprise Co., Ltd. Chair with a detachable backrest
US20040155509A1 (en) * 2003-02-07 2004-08-12 Smith Danny R. Knock-down furniture bracket
US20070056112A1 (en) * 2005-09-09 2007-03-15 Graebe Robert H Zoned cellular cushion with fail safe inflation zones
US20070120410A1 (en) * 2005-11-30 2007-05-31 L & P Property Management Company Knockdown attachment mechanism for a reclining chair
US20080296958A1 (en) * 2007-06-01 2008-12-04 Peterson Gordon J Chair back attachment and method of assembly
US20080303332A1 (en) * 2007-06-07 2008-12-11 Lear Corporation Vehicle seat connection
US20140239698A1 (en) * 2013-01-29 2014-08-28 Billy Joe Griggs, Jr. Novel cam assembly utilizing 2 or more interconnected and locking parts for furniture
US11060547B2 (en) 2018-04-30 2021-07-13 Ashley Furniture Industries, Llc Upholstered furniture component connection system
US11067111B2 (en) * 2018-01-12 2021-07-20 Stafast Products, Inc. Furniture connection bracket
CN114347939A (zh) * 2022-02-23 2022-04-15 湖南汽车工程职业学院 一种具有落水自救功能的汽车座椅系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5074621A (en) * 1989-11-30 1991-12-24 Systems Furniture Company Chair back seat construction

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605820A (en) * 1947-12-30 1952-08-05 Ervin A Powellek Means for detachably fastening furniture elements
US3044830A (en) * 1959-09-03 1962-07-17 Daimler Benz Ag Back rest adjusting device
US3066982A (en) * 1960-07-05 1962-12-04 Herman W Brower Knockdown frame for furniture
US3171690A (en) * 1962-02-13 1965-03-02 Albert S Weiss Furniture construction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2605820A (en) * 1947-12-30 1952-08-05 Ervin A Powellek Means for detachably fastening furniture elements
US3044830A (en) * 1959-09-03 1962-07-17 Daimler Benz Ag Back rest adjusting device
US3066982A (en) * 1960-07-05 1962-12-04 Herman W Brower Knockdown frame for furniture
US3171690A (en) * 1962-02-13 1965-03-02 Albert S Weiss Furniture construction

Cited By (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973798A (en) * 1972-09-25 1976-08-10 La-Z-Boy Chair Company Deflectable chair back
US4082355A (en) * 1977-03-11 1978-04-04 La-Z-Boy Chair Company Lockable back on a sofa bed
US4804227A (en) * 1986-12-15 1989-02-14 Ahrend-Cirkel B.V. Point-synchronized adjustment device for office chairs
US4932720A (en) * 1988-11-14 1990-06-12 Sherman Ronald K Modular furniture system
AU652971B2 (en) * 1990-11-30 1994-09-15 La-Z-Boy Incorporated Detachable chair back
EP0488654A1 (de) * 1990-11-30 1992-06-03 La-Z-Boy Chair Company Abnehmbare Rückenlehne
US5184871A (en) * 1990-11-30 1993-02-09 La-Z-Boy Chair Co. Detachable chair back
US5135284A (en) * 1991-01-09 1992-08-04 Leggett & Platt, Incorporated Knock-down chair back bracket
US5269589A (en) * 1991-01-25 1993-12-14 Bertrand Faure Ltd. Snap lock fitting for automotive seat backs
US5288126A (en) * 1991-10-11 1994-02-22 La-Z-Boy Chair Company Modular reclining/tilt chair and method
US5478133A (en) * 1993-02-03 1995-12-26 L&P Property Management Company Motion furniture construction
US5505522A (en) * 1994-01-31 1996-04-09 La-Z-Boy Chair Company Deflectable seat back
US5890765A (en) * 1996-06-07 1999-04-06 La-Z-Boy Incorporated Health care reclining chair
US6007155A (en) * 1997-07-14 1999-12-28 Honda Giken Kogyo Kabushiki Kaisha Anti-rattle guide assembly for supporting an armrest or other structure moveable between extended and retracted positions
US6687937B2 (en) 2000-06-01 2004-02-10 Crown Therapeutics, Inc. Moisture drying mattress with separate zone controls
US6474743B1 (en) * 2000-09-18 2002-11-05 Crown Therapeutics, Inc. Wheelchair back support assembly
US6623080B2 (en) 2001-08-09 2003-09-23 Roho, Inc. Cellular cushion vehicle seat system
US20040160112A1 (en) * 2001-08-09 2004-08-19 Clapper Dennis L. Cellular cushion vehicle seat system
US6698840B1 (en) * 2002-08-12 2004-03-02 Shin Yeh Enterprise Co., Ltd. Chair with a detachable backrest
US20040155509A1 (en) * 2003-02-07 2004-08-12 Smith Danny R. Knock-down furniture bracket
US20070056112A1 (en) * 2005-09-09 2007-03-15 Graebe Robert H Zoned cellular cushion with fail safe inflation zones
CN101346080B (zh) * 2005-11-30 2010-10-13 L&P资产管理公司 躺椅组件和用于将座椅靠背连接在底座机构上的机构
US20070120410A1 (en) * 2005-11-30 2007-05-31 L & P Property Management Company Knockdown attachment mechanism for a reclining chair
US7306290B2 (en) * 2005-11-30 2007-12-11 L & G Property Management Company Knockdown attachment mechanism for a reclining chair
WO2007064649A3 (en) * 2005-11-30 2008-01-24 L & P Property Management Co Knockdown attachment mechanism for a reclining chair
US20080296958A1 (en) * 2007-06-01 2008-12-04 Peterson Gordon J Chair back attachment and method of assembly
US7604298B2 (en) 2007-06-01 2009-10-20 Steelcase Development Corporation Chair back attachment and method of assembly
US7909407B2 (en) * 2007-06-07 2011-03-22 Lear Corporation Vehicle seat connection
US20080303332A1 (en) * 2007-06-07 2008-12-11 Lear Corporation Vehicle seat connection
US20140239698A1 (en) * 2013-01-29 2014-08-28 Billy Joe Griggs, Jr. Novel cam assembly utilizing 2 or more interconnected and locking parts for furniture
US9265347B2 (en) * 2013-01-29 2016-02-23 Billy Joe Griggs, Jr. Cam assembly utilizing 2 or more interconnected and locking parts for furniture
US10302116B2 (en) * 2013-01-29 2019-05-28 Billy Joe Griggs, Jr. Cam assembly with interlocking parts for furniture
US11067111B2 (en) * 2018-01-12 2021-07-20 Stafast Products, Inc. Furniture connection bracket
US11060547B2 (en) 2018-04-30 2021-07-13 Ashley Furniture Industries, Llc Upholstered furniture component connection system
US11708848B2 (en) 2018-04-30 2023-07-25 Ashley Furniture Industries, Llc Upholstered furniture component connection system
CN114347939A (zh) * 2022-02-23 2022-04-15 湖南汽车工程职业学院 一种具有落水自救功能的汽车座椅系统
CN114347939B (zh) * 2022-02-23 2024-01-26 湖南汽车工程职业学院 一种具有落水自救功能的汽车座椅系统

Also Published As

Publication number Publication date
SE364435B (de) 1974-02-25
NL149072B (nl) 1976-04-15
BE735207A (de) 1969-12-01
AT293668B (de) 1971-10-25
GB1208705A (en) 1970-10-14
FR1604433A (de) 1971-11-08
NL6910876A (de) 1970-01-21
DE1934876A1 (de) 1970-01-22
MY7300438A (en) 1973-12-31

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