US2859799A - Functional posture controller for chairs - Google Patents

Functional posture controller for chairs Download PDF

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Publication number
US2859799A
US2859799A US582390A US58239056A US2859799A US 2859799 A US2859799 A US 2859799A US 582390 A US582390 A US 582390A US 58239056 A US58239056 A US 58239056A US 2859799 A US2859799 A US 2859799A
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US
United States
Prior art keywords
chair
seat
angular
portions
chairs
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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
US582390A
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English (en)
Inventor
Edwin R Moore
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US582390A priority Critical patent/US2859799A/en
Priority to GB14046/57A priority patent/GB848092A/en
Priority to FR1174489D priority patent/FR1174489A/fr
Application granted granted Critical
Publication of US2859799A publication Critical patent/US2859799A/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
    • 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
    • A47C1/03294—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers
    • 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
    • A47C1/03255—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • 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
    • A47C1/03261—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • 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

  • This feature of my invention also avoids the tendency of hitherto known similar chairs to pull out the occupants shirt with an opposing motion of the chair back when reclining
  • Another object of the present invention is the provision of a device of the character described which is provided with a lever or hell crank arrangement that has a forward and backward moveability independent of the lowering and raising of the chair seat, and to which thecha'ir back is attached in such a manner as to give a unison relation with the occupants back, so that the chair back creepsforwardly whenrecli'ning, thus hugging the occupants back with angular relation, and synchro nizing all motions into one.
  • Yet still another object of-the present invention is the provision of a device of the character described which has a new and improved adjustment nut design and arr angem en't on the swivel spindle, said nut being partially split into segments and tapered at the ends to conform to an adaptor collar.
  • This arrangement will maintain a constant heighth of the chair seat, allows a finger touch adjustment "of the same when desired, and eliminates the need formilling out a long keyway groove in the-spindle, thusavoiding-awakening of the spindle and being more economical to manufacture than hitherto known similar constructions.
  • Fig. 2 is a side view like Fig. 1, showing the chair in an inclined position;
  • Fig. 3 is an enlargedfractional sectional view on the line 3 -3 of Fig. 1;
  • Fig. 4 is a further enlarged fractional sectional view on the line 4'- 4 of Fig. 3
  • An adaptor collar 17, which has a taper portion 20 corresponding to the taper lower end 14 of the nut 7, is interposed between the member 4 and the nut 7.
  • the aforementioned partially segmental splitting of the nut 7 by means of the slots 11 and the taper portions 14 and 20 cause a clinching effect of the nut 7 on the spindle 5, due to the weight of the occupant of the chair as well as 'of those parts of the chair which are supported by thespindle 5.
  • the nut 7 will hold securely on the spindle 5 and swivel with the spindle 5, sodas to maintain a constant heighth of the chair, or allowing finger-touch adjustment by turning of the membeil15 as previously referred to.
  • the seat 23 of the chair is secured by any suitable means, for instance by means of screws 25 (Fig. 3) to a seat frame consisting preferably of a pair of parallel angle bars 24, which have registering slots 27.
  • a swivel frame 30' has a pair 'of angular portions 31 which are joined to each other by means of cross portions 32 and 33';- The spindle 5 extends from the cross portion 33, to which it is firmly secured.
  • the upper ends of the angular portions 31 of the swivel frame 30 are pivoted to the angle bars 24 at 35.
  • Two pairs of link members 37. and 40 are'pivot'ed to the horizontal sections of the angular portions 31 of the frame 30 at 41 and 42 respectively.
  • a substantially U-shaped member 43 which Basia pair of longitudinal flange portions 44 and a web portion 45' is mov'ably interposed with its 'flange portions 4.4 between :the 'bars24.
  • -An up'right'member 47 which parries achair back 50, is firmly secured to the web portion 45 of the member 43 so as to form therewith an angular member.
  • the contour adjusting dial member 67 is a specific feature of my invention. When the member 67 is turned in one direction the spring 64 is collapsed to any desired position, allowing the chair to assume any contour, which will remain relative to the posture for the occupant of the chair at any adjustment of axis location in relation to the hip axis of the occupant.
  • a chair of the character described the combination of a pedestal, a threaded post extending upwardly from said pedestal, a swivel frame having a pair of angular portions joined to each other by cross portions one of which is secured to said post, a seat frame having a pair of parallel portions pivoted to the outer ends of the angular portions of said swivel frame and provided with registering longitudinal slots, a chair seat carried by said seat frame, a chair back, an angular member having two branch portions to the first of which said chair back is secured while the second is extended between the parallel portions of said seat frame, a fulcrum rod extending through the slots in said seat frame and through the second branch portion of said angular member, a first pair of link members pivotably connecting said fulcrum rod to the angular portions of said swivel frame to which said seat frame is secured, a second pair of link members pivotably connecting the angular portions of said swivel frame to the outer end of the said branch portion of said angular
  • a tilting chair the combination of a pedestal, a post extending upwardly from said pedestal, a swivel frame having a pair of angular portions joined to each other by crossportions one of which is secured to said post, a seat frame having a pair of parallel portions pivoted to the outer ends of the angular portions of said swivel frame and provided with registering longitudinal slots, a chair seat carried by said seat frame, a chair back, an angular member having two branch portions to the first of which said chair back is secured while the second is extended between the parallel portions of said seat frame, a fulcrum rod extending through the slots in said seat frame and through the second branch portion of said angular member, a first pair of link members pivotably connecting said fulcrum rod to the angular portions of said swivel frame to which said seat frame is secured, a second pair of link members pivotably connecting the angular portions of said swivel frame to the outer end of the second branch portion of said angular member, resilient means

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
US582390A 1956-05-03 1956-05-03 Functional posture controller for chairs Expired - Lifetime US2859799A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US582390A US2859799A (en) 1956-05-03 1956-05-03 Functional posture controller for chairs
GB14046/57A GB848092A (en) 1956-05-03 1957-05-02 Improvements in adjustable chairs
FR1174489D FR1174489A (fr) 1956-05-03 1957-05-03 Fauteuil à siège et dossier basculants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US582390A US2859799A (en) 1956-05-03 1956-05-03 Functional posture controller for chairs

Publications (1)

Publication Number Publication Date
US2859799A true US2859799A (en) 1958-11-11

Family

ID=24328964

Family Applications (1)

Application Number Title Priority Date Filing Date
US582390A Expired - Lifetime US2859799A (en) 1956-05-03 1956-05-03 Functional posture controller for chairs

Country Status (3)

Country Link
US (1) US2859799A (fr)
FR (1) FR1174489A (fr)
GB (1) GB848092A (fr)

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059888A (en) * 1960-02-26 1962-10-23 Lie Finn Rotary seat construction having novel bearing means therein
US3161396A (en) * 1963-09-05 1964-12-15 Collier Keyworth Company Swivel chair support construction
US3594040A (en) * 1968-12-31 1971-07-20 Edwin P Monroe Suspension device
US3620568A (en) * 1969-06-26 1971-11-16 Boeing Co Aircraft crewseat
US3947067A (en) * 1972-05-03 1976-03-30 Stanzwerk Peitz & Co. Chair
US3953054A (en) * 1973-03-19 1976-04-27 Permobilstiftelsen Hand operated wheel-chair
FR2438990A1 (fr) * 1978-10-20 1980-05-16 Protoned Bv Chaise ergonomique
US4471994A (en) * 1981-03-17 1984-09-18 Fa. Karl Zund & Co., AG Adjustable chair
US4596421A (en) * 1983-01-21 1986-06-24 Pierre Schmitz Office chair
US4629249A (en) * 1984-01-18 1986-12-16 Okamura Corporation Device for a reclining chair
US4652050A (en) * 1984-01-11 1987-03-24 Herman Miller, Inc. Chair tilt mechanism
US4682814A (en) * 1983-05-06 1987-07-28 Provenda Marketing Ag Tilting seat and back chair, particularly tilting desk chair
US4707029A (en) * 1985-08-07 1987-11-17 Roder Gmbh Sitzmobelworke Apparatus for supporting parts of furniture
US4718725A (en) * 1985-08-02 1988-01-12 Firma August Froscher G.M.B.H. & Co. K.G. Support-and adjusting device for seat and backrest on a work chair
US4761033A (en) * 1986-05-26 1988-08-02 Drabert Sohne Gmbh & Co. Chair
AT386517B (de) * 1987-02-10 1988-09-12 Zuend & Co Ag K Stuhl, insbesondere arbeitsstuhl
US4796952A (en) * 1986-06-12 1989-01-10 Giancarlo Piretti Chair with hinged backrest
US4854641A (en) * 1989-01-23 1989-08-08 Reineman Richard G Adjustable chair
US4948198A (en) * 1988-10-14 1990-08-14 Leggett & Platt, Incorporated Knee-tilt chair control
US4966412A (en) * 1984-10-24 1990-10-30 Burositzmobelfabrik Friedrich-W. Dauphin Gmbh & Co. Chair, in particular office chair
EP0406707A1 (fr) * 1989-07-01 1991-01-09 KÖNIG & NEURATH KG Chaise de travail avec siège et dossier
US5263767A (en) * 1990-02-28 1993-11-23 Svein Asbjornsen Adjustable chair
US5318345A (en) * 1991-06-07 1994-06-07 Hon Industries, Inc. Tilt back chair and control
US5388889A (en) * 1993-09-23 1995-02-14 Westinghouse Electric Corporation Torque control mechanism for chairs
US5397165A (en) * 1992-10-20 1995-03-14 Paltechnica Nitzanim Synchronous movement adjustable seat support
US5423594A (en) * 1991-05-21 1995-06-13 Ashfield Engineering Company Wexford Limited Chair tilting mechanism
US5725277A (en) * 1986-04-10 1998-03-10 Steelcase Inc. Synchrotilt chair
US5931531A (en) * 1997-01-23 1999-08-03 Comforto Gmbh Chair having adjustable synchronous tilting
WO2002024515A2 (fr) * 2000-09-21 2002-03-28 G & W Products, Inc. Base de montage et de basculement facile pour siege de velo
US6386634B1 (en) 1992-06-15 2002-05-14 Herman Miller, Inc. Office chair
US6513874B1 (en) * 1999-06-17 2003-02-04 Konig & Neurath Ag Chair, especially office chair
US6709058B1 (en) 1999-04-09 2004-03-23 Humanscale Corp. Ergonomic chair
EP1419718A1 (fr) * 2002-11-14 2004-05-19 Hodry Metallwarenfabrik R.Hoppe Ges.m.b.H & Co. KG Armature pour chaise de télévision
US20050029849A1 (en) * 2003-06-23 2005-02-10 Goetz Mark W. Tilt chair
US6942290B1 (en) 2000-09-21 2005-09-13 G & W Products, Inc. Quick-mount and pivot base for bicycle seat or the like
US20050264087A1 (en) * 2004-05-13 2005-12-01 Humanscale Corporation Mesh chair component
US20050275265A1 (en) * 2004-06-09 2005-12-15 Deimen Michael L Chair ride mechanism with tension assembly
US20060181128A1 (en) * 2005-02-02 2006-08-17 Hiroshi Takeuchi Chair and support mechanism unit thereof
US20070001497A1 (en) * 2005-06-20 2007-01-04 Humanscale Corporation Seating apparatus with reclining movement
US20100164263A1 (en) * 2007-06-06 2010-07-01 Malenotti S.R.L. Chair with oscillating backrest
US20100308633A1 (en) * 2007-10-30 2010-12-09 Donati S.P.A. mechanism for adjusting the pre-load of a stiffening spring for seats
US20110304192A1 (en) * 2010-06-15 2011-12-15 Augustat Betty A Ergometric Chair Apparatus
USD660056S1 (en) 2006-06-20 2012-05-22 Humanscale Corporation Chair
USD673401S1 (en) 2005-05-13 2013-01-01 Humanscale Corporation Chair support structure
US9352675B2 (en) 2011-09-21 2016-05-31 Herman Miller, Inc. Bi-level headrest, body support structure and method of supporting a user's cranium
US9504326B1 (en) 2012-04-10 2016-11-29 Humanscale Corporation Reclining chair
US9801471B2 (en) 2014-04-17 2017-10-31 Hni Technologies Inc. Chair and chair control assemblies, systems, and methods
IT201600071468A1 (it) * 2016-07-08 2018-01-08 Co Fe Mo Ind S R L Meccanismo di oscillazione per sedie
CN110366379A (zh) * 2017-03-22 2019-10-22 高飞模工业有限责任公司 用于椅子的铰接系统
US10667969B2 (en) 2018-01-16 2020-06-02 Kinetic Innovative Seating System Llc Ergonomically designed seating apparatus
US11197548B2 (en) * 2019-12-16 2021-12-14 Allseating Corporation Reclining control system for a chair
US11589678B2 (en) 2019-01-17 2023-02-28 Hni Technologies Inc. Chairs including flexible frames

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1239451B (de) * 1962-05-29 1967-04-27 Dr Dr Hans W Juergens Stuhl mit in der Hoehe verstellbarem Sitz und mit verstellbarer Lehne
US4429917A (en) * 1981-04-29 1984-02-07 Hauserman Inc. Int. Furniture & Textile Division Chair
DE3619312C1 (de) * 1986-06-07 1988-01-14 Kusch Co Sitzmoebel Wippmechanik fuer Sitzmoebel
DE3700447A1 (de) * 1987-01-09 1988-07-21 Vogt Bueromoebel Sitzmoebel
SE501399C2 (sv) * 1994-03-14 1995-02-06 Samhall Kalmarsund Ab Glidmekanism för horisontell förskjutning av en stolsits
US6139103A (en) * 1997-03-12 2000-10-31 Leggett & Platt, Inc. Synchronized chair seat and backrest tilt control mechanism

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1872894A (en) * 1930-05-13 1932-08-23 Collier Keyworth Company Chair iron
US1928801A (en) * 1931-05-15 1933-10-03 Toledo Metal Furniture Company Article of furniture
US2321385A (en) * 1941-06-16 1943-06-08 Sikes Company Tilting chair
US2403425A (en) * 1942-02-16 1946-07-02 Seng Co Tiltable chair
US2403198A (en) * 1944-06-06 1946-07-02 Collier Keyworth Company Chair iron
US2420745A (en) * 1944-03-06 1947-05-20 Frank B Harman Posture chair
US2447601A (en) * 1946-02-19 1948-08-24 Sikes Company Tilting chair seat and back rest
US2471024A (en) * 1946-10-04 1949-05-24 Roy A Cramer Chair with tilting back and automatically shiftable seat
US2545950A (en) * 1946-12-06 1951-03-20 Seng Co Swivel chair iron

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1872894A (en) * 1930-05-13 1932-08-23 Collier Keyworth Company Chair iron
US1928801A (en) * 1931-05-15 1933-10-03 Toledo Metal Furniture Company Article of furniture
US2321385A (en) * 1941-06-16 1943-06-08 Sikes Company Tilting chair
US2403425A (en) * 1942-02-16 1946-07-02 Seng Co Tiltable chair
US2420745A (en) * 1944-03-06 1947-05-20 Frank B Harman Posture chair
US2403198A (en) * 1944-06-06 1946-07-02 Collier Keyworth Company Chair iron
US2447601A (en) * 1946-02-19 1948-08-24 Sikes Company Tilting chair seat and back rest
US2471024A (en) * 1946-10-04 1949-05-24 Roy A Cramer Chair with tilting back and automatically shiftable seat
US2545950A (en) * 1946-12-06 1951-03-20 Seng Co Swivel chair iron

Cited By (80)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059888A (en) * 1960-02-26 1962-10-23 Lie Finn Rotary seat construction having novel bearing means therein
US3161396A (en) * 1963-09-05 1964-12-15 Collier Keyworth Company Swivel chair support construction
US3594040A (en) * 1968-12-31 1971-07-20 Edwin P Monroe Suspension device
US3620568A (en) * 1969-06-26 1971-11-16 Boeing Co Aircraft crewseat
US3947067A (en) * 1972-05-03 1976-03-30 Stanzwerk Peitz & Co. Chair
US3953054A (en) * 1973-03-19 1976-04-27 Permobilstiftelsen Hand operated wheel-chair
FR2438990A1 (fr) * 1978-10-20 1980-05-16 Protoned Bv Chaise ergonomique
US4471994A (en) * 1981-03-17 1984-09-18 Fa. Karl Zund & Co., AG Adjustable chair
US4596421A (en) * 1983-01-21 1986-06-24 Pierre Schmitz Office chair
US4682814A (en) * 1983-05-06 1987-07-28 Provenda Marketing Ag Tilting seat and back chair, particularly tilting desk chair
US4652050A (en) * 1984-01-11 1987-03-24 Herman Miller, Inc. Chair tilt mechanism
US4629249A (en) * 1984-01-18 1986-12-16 Okamura Corporation Device for a reclining chair
US4966412A (en) * 1984-10-24 1990-10-30 Burositzmobelfabrik Friedrich-W. Dauphin Gmbh & Co. Chair, in particular office chair
US4718725A (en) * 1985-08-02 1988-01-12 Firma August Froscher G.M.B.H. & Co. K.G. Support-and adjusting device for seat and backrest on a work chair
AU598473B2 (en) * 1985-08-02 1990-06-28 August Froscher G.M.B.H. & Co. K.G. Support- and adjusting device for seat and backrest on a work chair
US4707029A (en) * 1985-08-07 1987-11-17 Roder Gmbh Sitzmobelworke Apparatus for supporting parts of furniture
US5725277A (en) * 1986-04-10 1998-03-10 Steelcase Inc. Synchrotilt chair
US4761033A (en) * 1986-05-26 1988-08-02 Drabert Sohne Gmbh & Co. Chair
US4796952A (en) * 1986-06-12 1989-01-10 Giancarlo Piretti Chair with hinged backrest
AT386517B (de) * 1987-02-10 1988-09-12 Zuend & Co Ag K Stuhl, insbesondere arbeitsstuhl
US4832402A (en) * 1987-02-10 1989-05-23 Karl Zund & Co. AG Adjusting mechanism for a chair
US4948198A (en) * 1988-10-14 1990-08-14 Leggett & Platt, Incorporated Knee-tilt chair control
US4854641A (en) * 1989-01-23 1989-08-08 Reineman Richard G Adjustable chair
EP0406707A1 (fr) * 1989-07-01 1991-01-09 KÖNIG & NEURATH KG Chaise de travail avec siège et dossier
US5263767A (en) * 1990-02-28 1993-11-23 Svein Asbjornsen Adjustable chair
US5423594A (en) * 1991-05-21 1995-06-13 Ashfield Engineering Company Wexford Limited Chair tilting mechanism
US5318345A (en) * 1991-06-07 1994-06-07 Hon Industries, Inc. Tilt back chair and control
US6733080B2 (en) 1992-06-15 2004-05-11 Herman Miller, Inc. Seating structure having a backrest with a flexible membrane and a moveable armrest
US6726286B2 (en) 1992-06-15 2004-04-27 Herman Miller, Inc. Seating structure having a fabric with a weave pattern
US7594700B2 (en) 1992-06-15 2009-09-29 Herman Miller, Inc. Contoured seating structure
US6386634B1 (en) 1992-06-15 2002-05-14 Herman Miller, Inc. Office chair
US6966604B2 (en) 1992-06-15 2005-11-22 Herman Miller, Inc. Chair with a linkage assembly
US6588842B2 (en) 1992-06-15 2003-07-08 Herman Miller, Inc. Backrest
US6702390B2 (en) 1992-06-15 2004-03-09 Herman Miller, Inc. Support assembly for a seating structure
US6722741B2 (en) 1992-06-15 2004-04-20 Herman Miller, Inc. Seating structure having a backrest with a bowed section
US5397165A (en) * 1992-10-20 1995-03-14 Paltechnica Nitzanim Synchronous movement adjustable seat support
US5388889A (en) * 1993-09-23 1995-02-14 Westinghouse Electric Corporation Torque control mechanism for chairs
US5931531A (en) * 1997-01-23 1999-08-03 Comforto Gmbh Chair having adjustable synchronous tilting
US20090091174A1 (en) * 1999-04-09 2009-04-09 Humanscale Corporation Ergonomic Armrest
US6709058B1 (en) 1999-04-09 2004-03-23 Humanscale Corp. Ergonomic chair
US7980631B2 (en) 1999-04-09 2011-07-19 Humanscale Corporation Ergonomic armrest
US6959965B2 (en) 1999-04-09 2005-11-01 Humanscale Corporation Ergonomic chair
US6513874B1 (en) * 1999-06-17 2003-02-04 Konig & Neurath Ag Chair, especially office chair
US6942290B1 (en) 2000-09-21 2005-09-13 G & W Products, Inc. Quick-mount and pivot base for bicycle seat or the like
WO2002024515A3 (fr) * 2000-09-21 2002-06-06 G & W Products Inc Base de montage et de basculement facile pour siege de velo
WO2002024515A2 (fr) * 2000-09-21 2002-03-28 G & W Products, Inc. Base de montage et de basculement facile pour siege de velo
EP1419718A1 (fr) * 2002-11-14 2004-05-19 Hodry Metallwarenfabrik R.Hoppe Ges.m.b.H & Co. KG Armature pour chaise de télévision
US7207629B2 (en) 2003-06-23 2007-04-24 Herman Miller, Inc. Tilt chair
US20050029849A1 (en) * 2003-06-23 2005-02-10 Goetz Mark W. Tilt chair
US20050264087A1 (en) * 2004-05-13 2005-12-01 Humanscale Corporation Mesh chair component
US8240771B2 (en) 2004-05-13 2012-08-14 Humanscale Corporation Mesh chair component
US20050275265A1 (en) * 2004-06-09 2005-12-15 Deimen Michael L Chair ride mechanism with tension assembly
US20080030059A1 (en) * 2004-06-09 2008-02-07 Kimball International, Inc. Chair ride mechanism with tension assembly
US7625045B2 (en) 2004-06-09 2009-12-01 Kimball International, Inc. Chair ride mechanism with tension assembly
US7273253B2 (en) 2004-06-09 2007-09-25 Kimball International, Inc. Chair ride mechanism with tension assembly
US20060181128A1 (en) * 2005-02-02 2006-08-17 Hiroshi Takeuchi Chair and support mechanism unit thereof
US7293833B2 (en) * 2005-02-02 2007-11-13 Itoki Corporation Chair and support mechanism unit thereof
USD673401S1 (en) 2005-05-13 2013-01-01 Humanscale Corporation Chair support structure
US20090152930A1 (en) * 2005-06-20 2009-06-18 Humanscale Corporation Seating Apparatus With Reclining Movement
US8777312B2 (en) 2005-06-20 2014-07-15 Humanscale Corporation Seating apparatus with reclining movement
US8061775B2 (en) 2005-06-20 2011-11-22 Humanscale Corporation Seating apparatus with reclining movement
US20070001497A1 (en) * 2005-06-20 2007-01-04 Humanscale Corporation Seating apparatus with reclining movement
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FR1174489A (fr) 1959-03-11
GB848092A (en) 1960-09-14

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