US2616484A - Chair having a suspended seat and back resiliently supported at its lower end - Google Patents

Chair having a suspended seat and back resiliently supported at its lower end Download PDF

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Publication number
US2616484A
US2616484A US17627A US1762748A US2616484A US 2616484 A US2616484 A US 2616484A US 17627 A US17627 A US 17627A US 1762748 A US1762748 A US 1762748A US 2616484 A US2616484 A US 2616484A
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US
United States
Prior art keywords
seat
rest
anchorage
thigh
spring
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
US17627A
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English (en)
Inventor
Bernard A Christie
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.)
Harris & Tyler Ltd
Original Assignee
Harris & Tyler 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 Harris & Tyler Ltd filed Critical Harris & Tyler Ltd
Application granted granted Critical
Publication of US2616484A publication Critical patent/US2616484A/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
    • A47C3/00—Chairs characterised by structural features; Chairs or stools with rotatable or vertically-adjustable seats
    • A47C3/02—Rocking chairs
    • A47C3/025—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/02—Reclining or easy chairs
    • A47C1/031—Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/033—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest the coupling member being a flexible strip
    • 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
    • A47C7/02—Seat parts
    • A47C7/28—Seat parts with tensioned springs, e.g. of flat type
    • A47C7/285—Seat parts with tensioned springs, e.g. of flat type with metal strips or webs
    • 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
    • A47C7/44—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/445—Supports for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with bar or leaf springs

Definitions

  • F c r the hig e t p e ibl eg e o om fort, seats of the, referred to are designed o h t a a ons i the pos on of e t h rest by changing the position of the legs of the occupant, result in such variation of curvature of the flexible element that. in all positions of use the body is supported continuously from the beul e to be ath e knees in s ch ma ner that at all angles of incline of the body the small at he ba in articul r. n d at u ner ed! I s.
  • the spring structure preferably is adapted to provide a resilient seating surface curved to a convex formation in the longitudinal direction and comprises two or more suitably bent spring strips extending longitudinally with respect to the seat and bent or curved over at front. and rear for attachment to a transverse anchorage member extending below the structure at a suitable intermediate position in the length of the said structure.
  • Each spring may be in the form of a continuous strip anchored at its ends to the said transverse anchorage member and preferably is of substantially elliptical formation, the front section of which it Of le s d t a d rea n th' the rear section thereoi.
  • the longitudinally extending springs may be connected by transverse members.
  • the weightacarrying part of the seat proper and/or the resilient or resiliently mounted structure is divided longitudinally for the whole or a part of its length to provide two parts capable ofindependentrocking' movement.
  • the spring strips preferably are disposed parallel to the longitudinal axis of the seat or the like, but may be otherwise suitably disposed.
  • the fixed anchorage may comprise a tube, the springs being adapted to' embrace the tube and being fixed thereto as by means of bolts.
  • the fixed anchorage may comprise a bar of rectangular cross-section, and the ends 0 the spr ngs ay b lamped to e upp r and lower surfaces of the said bar.
  • the invention furthermore includes the constructional embodiments hereinafter described.
  • Fig. 1 is a sectional side elevation illustrating one construction of seat or the like in accordance with the invention
  • Fig. 2 is a. front elevation corresponding to Fi liig. 3 is a detail View in side elevation illustrating the manner in which tilting of the seat support is permitted by flexure of the springs; and
  • Fig. 4 is a plan view corresponding to Fig. 1 and illustrating a modification in which the seat-supportingstructure is divided longitudinal- 1y.
  • the improved seat or the like may comprisetwo side frames I, each of w c is sh d to provi e ess n. lb while the upper a t is prov ded t n arme t lc.
  • Cu ved tu ar i memb rs 2 are a ta hed o h inn s d at h d n m s! a by we dns.
  • a back-r t u po t e a ly i the form of a slightly curved spring strip of flat e iee. ben e e t i s ends and s cu d a by welding to the side members 2, may be provided, such back-rest support 4 serving as a slightly yieldable abutment constituting a support for the back of the user to enable change of leg position to be effected without moving the position of the body relative to the seat surface.
  • each spring may consist of a strip bent to a substantially elliptical formation such that the front part is of less depth and greater length than the rear part.
  • the ends of the strip are arranged to extend in overlapping relation and are provided with parts 6a, 6b shaped to embrace the anchorage 5 so that, by means such as, a bolt 1, each spring 6 may be firmly clamped to the anchorage member 5.
  • the springs 6 may be two or more in number. As shown in Fig. 2, three springs 6 are provided in equally spaced relation and they may be connected at their upper part by means of transverse slats 60 to provide a structure constituting a thigh-rest.
  • the springs 6 fixed to the anchorage member 5, in the manner described provide a thigh-rest structure which, by flexure of the springs, more especially adjacent the anchorage, is capable of rocking movement in relation to the anchorage to a substantial degree as shown in Fig. 3, wherein the broken lines indicate the approximate forward limit of the rocking movement.
  • the upper parts of the springs 6 are wholly or partially curved to provide a slightly convex formation longitudinally and the springs are of such strength that they provide little, if any, direct cushioning action and maintain the thigh-rest normally in a neutral position, such as shown in Fig. 1.
  • the springs also determine the limits of movement of the structure as a whole and thus eliminate the provision of stops.
  • a flexible cushion element l constituting a combined seat and back-rest, is slung from the 'upper anchorage 3 and attached to the spring structure as by means of a backing 8 extending around the front ends of the springs and secured thereto as by means of bolts 9.
  • the flexible element I 0 may consist of connected slats. but may be otherwise constructed in any suitable manner and of any desired material according to the purpose for which the seat or the like is intended.
  • the spring structure is divided longitudinally to form two spaced independent parts, each including at least two springs 8 suitably connected together and to the anchorage member as in the manner before described.
  • the flexible or'other seat element In is formed with a longitudinal gap [0e extending from the front end so as to divide the effective weight-carrying part of the seat into two parts.
  • the two parts lllc, Hid are movable independently so that they are capable of taking up different inclinations with respect to the anchorage member 5, thereby ensuring maximum comfort while allowing independent leg movement.
  • the gap 10c serves to ensure free movement of the centrally arranged control stick.
  • the springs 6 may be otherwise constructed and adapted for attachment to a suitable anchorage disposed below the seat member at a suitable position in its length from-front to rear and the anchorage member may be of square or other suitable section.
  • a frame including rigid upper and lower transverse anchorage members, a thigh rest carried by the lower anchorage member and a flexible seat and back rest member secured at one end on said upper anchorage member and at the other end on said thigh-rest, said thigh-rest comprising longitudinally extending looped spring members each constituted by a spring metal strip, the extremities of which extend into overlapping relation and are bent downwardly and towards each other, the overlapping ends being anchored to said lower anchorage member to maintain the thigh-rest normally in a neutral position, but permitting flexure thereof adjacent the point of attachment to the anchorage member to permit fore and aft rocking movement of the thigh-rest as a whole with respect to the anchorage member.
  • a frame including rigid upper and lower transverse anchorage members, a thigh-rest carried by the lower anchorage member and a flexible seat and back rest member secured at one end on said upper anchorage member and at the other end on said thigh-rest, said thigh-rest comprising longitudinally extending looped spring members of substantially elliptical formation anchored to said lower anchorage member intermediate the ends of the loop and having a front section forward of the anchorage of less depth and greater length than the rear section thereof, the fastening of the thigh-rest to the lower anchorage member maintaining the thigh-rest normally in a neutral position, but the elasticity of the spring members permitting flexure of the thigh rest adjacent the point of attachment to the anchorage member to permit fore and aft rocking movement of the thigh-rest as a whole with respect to the anchorage member.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Seats For Vehicles (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
US17627A 1947-05-02 1948-03-29 Chair having a suspended seat and back resiliently supported at its lower end Expired - Lifetime US2616484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB11878/47A GB629965A (en) 1947-05-02 1947-05-02 Improvements in or relating to seats or the like

Publications (1)

Publication Number Publication Date
US2616484A true US2616484A (en) 1952-11-04

Family

ID=9994326

Family Applications (1)

Application Number Title Priority Date Filing Date
US17627A Expired - Lifetime US2616484A (en) 1947-05-02 1948-03-29 Chair having a suspended seat and back resiliently supported at its lower end

Country Status (5)

Country Link
US (1) US2616484A (en, 2012)
BE (1) BE481934A (en, 2012)
CH (1) CH275123A (en, 2012)
FR (1) FR964628A (en, 2012)
GB (1) GB629965A (en, 2012)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086819A (en) * 1960-05-03 1963-04-23 Ford Motor Co Vehicle seat structure
DE1271333B (de) * 1959-11-04 1968-06-27 Miller Herman Inc In eine Sitzschale verformbare, nach allen Richtungen durchbiegbare Platte
US4502729A (en) * 1981-08-19 1985-03-05 Giroflex Entwicklungs Ag Chair, especially a reclining chair
US5320410A (en) * 1992-01-14 1994-06-14 Steelcase Inc. Chair control
US5664835A (en) * 1994-03-25 1997-09-09 Peter Roeder Chair
US20090021057A1 (en) * 2007-07-16 2009-01-22 Erb Scott C Dynamic furniture
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US11006754B2 (en) 2018-04-12 2021-05-18 American Leather Operations, Llc Motion chair
US11096497B2 (en) 2015-04-13 2021-08-24 Steelcase Inc. Seating arrangement
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11324325B2 (en) 2015-04-13 2022-05-10 Steelcase Inc. Seating arrangement
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2768674A (en) * 1953-04-09 1956-10-30 Leroy C Phenix Spring suspension for rocking chairs
DE29717573U1 (de) * 1997-10-02 1998-01-02 Rolf Benz AG, 72202 Nagold Sitzmöbel, insbesondere Stuhl
CA2643948C (en) * 2006-03-24 2012-05-08 Herman Miller, Inc. Seat
EP2596722A1 (de) * 2011-11-24 2013-05-29 AUTFIT Polierwerkstätte Relaxmöbel

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1430248A (en) * 1921-12-15 1922-09-26 San Fernando Mfg Ass Furniture spring
DE648319C (de) * 1937-07-28 Hans Rudolf Plail Stoffbahnbefestigung, insbesondere an Liegestuehlen
GB488379A (en) * 1934-02-14 1938-07-06 Assalit Louis Improvements in or relating to seats, more particularly for use in vehicles
US2203598A (en) * 1936-11-20 1940-06-04 Charles W Nelems Form fitting metal spring seat
US2281341A (en) * 1938-11-23 1942-04-28 Turner John Chair or seat
GB550068A (en) * 1941-03-18 1942-12-22 Ivor Charles Tyler Improvements in or relating to seats and the like
US2329572A (en) * 1942-09-29 1943-09-14 R H Macy & Co Inc Chair

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE648319C (de) * 1937-07-28 Hans Rudolf Plail Stoffbahnbefestigung, insbesondere an Liegestuehlen
US1430248A (en) * 1921-12-15 1922-09-26 San Fernando Mfg Ass Furniture spring
GB488379A (en) * 1934-02-14 1938-07-06 Assalit Louis Improvements in or relating to seats, more particularly for use in vehicles
US2203598A (en) * 1936-11-20 1940-06-04 Charles W Nelems Form fitting metal spring seat
US2281341A (en) * 1938-11-23 1942-04-28 Turner John Chair or seat
GB550068A (en) * 1941-03-18 1942-12-22 Ivor Charles Tyler Improvements in or relating to seats and the like
US2329572A (en) * 1942-09-29 1943-09-14 R H Macy & Co Inc Chair

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1271333B (de) * 1959-11-04 1968-06-27 Miller Herman Inc In eine Sitzschale verformbare, nach allen Richtungen durchbiegbare Platte
US3086819A (en) * 1960-05-03 1963-04-23 Ford Motor Co Vehicle seat structure
US4502729A (en) * 1981-08-19 1985-03-05 Giroflex Entwicklungs Ag Chair, especially a reclining chair
US5320410A (en) * 1992-01-14 1994-06-14 Steelcase Inc. Chair control
US5664835A (en) * 1994-03-25 1997-09-09 Peter Roeder Chair
US20090021057A1 (en) * 2007-07-16 2009-01-22 Erb Scott C Dynamic furniture
US7850238B2 (en) * 2007-07-16 2010-12-14 Erb Scott C Dynamic furniture
US8590969B2 (en) 2007-07-16 2013-11-26 Exciting Inc. Dynamic furniture
USRE45281E1 (en) * 2007-07-16 2014-12-09 Exciting Inc. Dynamic furniture
US8979201B2 (en) 2007-07-16 2015-03-17 Exciting Inc. Dynamic furniture
US9743771B2 (en) 2007-07-16 2017-08-29 Exciting Inc. Dynamic furniture
US10772426B2 (en) 2007-07-16 2020-09-15 Exciting Inc. Dynamic furniture
US11096497B2 (en) 2015-04-13 2021-08-24 Steelcase Inc. Seating arrangement
US11963621B2 (en) 2015-04-13 2024-04-23 Steelcase Inc. Seating arrangement
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
US11324325B2 (en) 2015-04-13 2022-05-10 Steelcase Inc. Seating arrangement
US11553797B2 (en) 2015-04-13 2023-01-17 Steelcase Inc. Seating arrangement
US11825955B2 (en) 2017-06-09 2023-11-28 Steelcase Inc. Seating arrangement and method of construction
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US11910932B2 (en) 2018-04-12 2024-02-27 American Leather Operations, Llc Motion chair
US11583085B2 (en) 2018-04-12 2023-02-21 American Leather Operations, Llc Motion chair
US11006754B2 (en) 2018-04-12 2021-05-18 American Leather Operations, Llc Motion chair
US11602223B2 (en) 2019-02-21 2023-03-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11910934B2 (en) 2019-02-21 2024-02-27 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11109683B2 (en) 2019-02-21 2021-09-07 Steelcase Inc. Body support assembly and method for the use and assembly thereof
US12226025B2 (en) 2019-02-21 2025-02-18 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11805913B2 (en) 2019-12-13 2023-11-07 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11786039B2 (en) 2019-12-13 2023-10-17 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US11357329B2 (en) 2019-12-13 2022-06-14 Steelcase Inc. Body support assembly and methods for the use and assembly thereof
US12161232B2 (en) 2019-12-13 2024-12-10 Steelcase Inc. Body support assembly and methods for the use and assembly thereof

Also Published As

Publication number Publication date
BE481934A (en, 2012) 1948-05-15
GB629965A (en) 1949-10-03
CH275123A (fr) 1951-05-15
FR964628A (en, 2012) 1950-08-19

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