EP0309368B1 - Ergonomischer Stuhl - Google Patents

Ergonomischer Stuhl Download PDF

Info

Publication number
EP0309368B1
EP0309368B1 EP88440069A EP88440069A EP0309368B1 EP 0309368 B1 EP0309368 B1 EP 0309368B1 EP 88440069 A EP88440069 A EP 88440069A EP 88440069 A EP88440069 A EP 88440069A EP 0309368 B1 EP0309368 B1 EP 0309368B1
Authority
EP
European Patent Office
Prior art keywords
seat
backrest
plate
chair according
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
EP88440069A
Other languages
English (en)
French (fr)
Other versions
EP0309368A1 (de
Inventor
Charles Heidmann
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.)
Steelcase Strafor SA
Original Assignee
Steelcase Strafor SA
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 Steelcase Strafor SA filed Critical Steelcase Strafor SA
Priority to AT88440069T priority Critical patent/ATE86450T1/de
Publication of EP0309368A1 publication Critical patent/EP0309368A1/de
Application granted granted Critical
Publication of EP0309368B1 publication Critical patent/EP0309368B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/441—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with adjustable elasticity
    • 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
    • A47C3/026—Rocking chairs with seat, or seat and back-rest unit elastically or pivotally mounted in a rigid base frame with central column, e.g. rocking office chairs; Tilting chairs
    • 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—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • 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—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A47C7/44—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame
    • A47C7/443—Support for the head or the back for the back with elastically-mounted back-rest or backrest-seat unit in the base frame with coil springs

Definitions

  • the present invention relates to a new ergonomic chair, usable in particular as an office chair with exceptional characteristics of comfort and adaptability to the shape and positions of its occupant.
  • this armchair relate in particular to the constitution of the seat-back set and more particularly the combination of means making this set comfortable and permanently adaptable to the occupant in any position. It is understood that this assembly is itself mounted on a base which, in known manner may preferably include height adjustment means, but this base will not be described here, and is not part of the invention.
  • the essential characteristic of the armchairs according to the present invention is to include a seat-back assembly in one piece whose flexibility with respect to the fixed base results from the combination of mechanical means and the properties of the material used for its construction.
  • an anterior portion of the seat being fixedly mounted on the base, the assembly of the posterior portion of the seat and the backrest constitutes a single molded part, pivotally mounted on this anterior portion and comprising mechanical means ensuring the elastic tilting of this part, the portion of this part constituting the file having at the desired height as a function of the comfort of the seat a structure ensuring its controlled and limited deformation towards the rear.
  • a seat comprising a single molded part, mounted tilting with respect to the front portion of the seat, around a flexible zone and the backrest of which also has a flexible zone.
  • the aim is to maintain the back at the level of the lumbar vertebrae, at a constantly optimal angle, whatever the inclination of the seat, thanks to a constant modification of the inclination of the back under the effect of a very complicated linkage, which exerts a traction towards the rear of the whole of the backrest, according to the inclination of the whole of the seat.
  • WO-A-8704909 is described a seat in which a single molded part is mounted on an elastic metal frame, the front portion of the seat being fixed while its rear portion constitutes the only connection with the backrest, mechanical means, formed by the elbows of a metal frame which should allow elastic tilting of this rear portion.
  • said metal frame in fact only provides a certain suspension effect and not a real tilting with the feeling of comfort which would result therefrom.
  • the present invention relates to a seat of this general type but in which a much simpler construction provides much greater comfort.
  • the seat-back assembly thus constituting a single molded part, equipped with elastic tilting means which have just been described, the invention aims to combine, with these mechanical means, a back structure which allows the upper portion of this file to bend elastically backwards preferably at the height of the occupant's shoulders under the pressure of the body of this occupant.
  • a back structure is preferably of the type described in EP-0309369, patent filed jointly with the present application for "semi-rigid structure with controlled ability to unidirectional deformation, usable in particular in the construction of seats.
  • Such a structure comes by molding of said single molded part, and is present, in the zone concerned by the backrest, in the form of horizontal ribs, the portion located towards the back of the seat is thick. and rigid while the forward portion of the seat is thinned and rounded, in such a way that, seen from the rear, this area of the backrest appears to include a series of very narrow gutters which can be crushed under the pressure of occupant, allowing a slight and limited flexion from the top of the backrest to the rear.
  • this configuration offers an additional advantage, allowing this seat to include another characteristic falling within the scope of the invention.
  • the metal structure with which the molded elements forming the seat and the back are associated is generally mounted in the axis of the seat.
  • this structure is transferred to the ribs, and is in the form of a bowl made of metal tubes, the substantially horizontal portion of which corresponds at the seat is located under the corresponding part of said molded part, while the substantially vertical portion reinforcing the backrest until the bending zone is located in front of the corresponding part of the molded part, these tubes therefore passing through this molded part in the connection area between the seat and the backrest.
  • the armrests can thus easily be attached to this bowl.
  • the front portion of the "seat" part of the molded part described above is also associated with a shoe allowing it to slide back and forth relative to the casing containing the aforementioned mechanical means intended for its elastic tilting. This results in a displacement relative to the pivot axis around which this tilting occurs, this displacement operating itself according to the configuration and the weight of the user.
  • the seat according to the invention resting on a fixed base with adjustable height generally designated by 10, has the fundamental characteristic of comprising a single seat-back assembly in a single molded part, designated by the global reference 11, whose displacements and deformations caused relative to the base 10 by the configuration and the positions of the occupant result from the combination of mechanical means, designated by the global reference 12 and the properties of 'a structure molded with the part 11 and designated by the global reference 13.
  • the single molded part 11 comprises a substantially horizontal portion 14, constituting the largest part of the seat cushion, and a substantially vertical portion 15, constituting as a whole the seat back.
  • the portion 14 is pivotally mounted about a horizontal axis 16, mounted at the rear of a fixed seat portion 17, integral with the base 10, and covering a casing 18, which encloses the part retaining mechanism 11 and in which is mounted the cylinder 19 allowing the height adjustment of the seat.
  • This portion 14 is rigidly secured to the portion 15, and the rearward flexing ability of the upper zone of the portion 15 is ensured by the structure 13.
  • FIGS. 2 to 4 there is shown the detail of the mechanism 12.
  • This mechanism consists of a support plate 20, permanently compressing the free ends 22 of two springs 21a and 21b, the other ends 23 of which are hooked to the front of the casing 18.
  • This plate 20 is integral in rotation with the pivoting axis 16, so that the tilting of the part 11 takes place in elastic opposition to the springs 21.
  • Means for adjusting the spring retaining force 21 are provided in the form of a screw 24, operated by a button 25, accessible by the occupant outside the casing 18.
  • This screw cooperates with a threaded housing of a bar 26 joining the ends 22 of the springs 21, so that its rotation determines the modification of the height of the point of application of the springs on the plate 20, and as a result of the force to be applied to these springs to tilt the Exhibit 11.
  • this point is situated towards the bottom of the plate 20, while in FIG. 2b, it is situated at the very top of the said plate, which makes the necessary effort, therefore the hardness of the mechanism, much higher.
  • a mechanism for locking the mechanism is also provided, in the form of a push rod 26, pivotally mounted on the axis 23 at its front end; and whose rear end 27 can immobilize the plate 20 against any forward movement.
  • the occupant has a lever 28 pivoting at 28 'acting by a finger 30 carried by an axis 29 on the height of inclination of the pusher 26.
  • a notched guide 31 defines a certain number of positions of the finger 30 , that is to say of possible limits to the degree of inclination of the plate 20, therefore of the part 11.
  • this structure which comes from molding with the whole part 11, preferably made of polypropylene, consists of rigid blocks 5, spaced from one another by ribs 6 and joined by gutters 7, made of thinner and / or more flexible material, which constitute the only deformable portions of the structure.
  • each gutter being small, when a force is exerted on the structure in the direction F, the overall direction of the structure will pass from ZZ 'to ZZ' ', the angle Z' Z Z '' being small , and according to the number of gutters.
  • ribs 8 in the interior of the gutters, or some of them are provided according to the invention. The control of the deformation of the structure therefore depends on two factors, which can be provided on request, namely the number of gutters 7 and the number of ribs 8.
  • the structure is deformable only in the direction F, and it is practically undeformable in the opposite direction.
  • This structure is original in itself, and is the subject of EP-0309369 mentioned above. Its combination with the mechanism illustrated in previous figures 2 to 4 is also original and it is this which constitutes the subject of the present application.
  • the upper part 15a of the backrest 15 can bend slightly and limited with respect to the lower part 15b, which ensures optimum comfort for the occupant.
  • this configuration of the single part 11 makes it possible to associate this part, or shell, 11, with a cradle or bowl in metal tube designated by the general reference 40 , and located entirely on the periphery of said shell.
  • this bowl comprises two horizontal tubes, namely the lower tube 41, which fits on the pivoting bar 16, and the upper tube 32, on which the lowest rib of the structure 13 hangs; it also comprises two bent side tubes 33a and 33b, the substantially horizontal portion of which is located under the seat 14, and the substantially vertical portion is located in front of the backrest 15, these lateral tubes therefore passing through the part 11 at 34a and 34b ( see figure 1 ').
  • This configuration of said bowl is also original and forms part of the invention. It is also thanks to this configuration that all the controls of this seat (button 25 - lever 28 - and dependent organs) can be housed in the casing 18, that is to say in the fixed part.
  • the different parts of the shell 11 are curved, as has been partially shown in Figure 1, and are intended in any case to be covered by the usual upholstery for this kind of seat.
  • the front seat area 17, instead of being fixed on the front portion of the casing 18, resting on the pivot axis 16, includes means allowing it to slide back and forth back on that portion.
  • These means consist of an intermediate piece 34 integral with the portion 17 and forming two lateral pads 35 (see FIG. 8), sliding on the lateral edges 36 of the casing 18.
  • the portion 17 is therefore movable from front to rear relative to the casing 18, and, consequently, relative to the axis 16, so that the tilting of the whole of the seat 14 takes place more or less at front or rear of the base 10, depending on the configuration of the weight of the user, who thus finds a third element of comfort.
  • the variant of FIGS. 7 and 8 still has an additional difference: while in the embodiment of FIG. 1, the connection between the front horizontal portion 17 and the rear horizontal portion 14 was on the axis 16, on the contrary, in the variant of FIG. 7, this connection is made at a certain vertical distance from the axis 16, which allows a certain flexibility in this connection , and consequently eliminates the "bar effect", detrimental to the comfort of the seat, which thus finds a fourth element of comfort by adapting to the co-training of the user.

Landscapes

  • Chairs Characterized By Structure (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Seats For Vehicles (AREA)
  • Fluid-Driven Valves (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Claims (9)

  1. Ergonomischer Stuhl eines Typs, der umfaßt:
    - einen Sitz mit einem vorderen Bereich (17) und einem hinteren Bereich (14) und einer horizontalen Schwenkachse, die an einem höhenverstellbaren Gestell (10) angebracht sind,
    - eine einteilige Rückenlehne (13), die auf einer bestimmten Höhe eine Struktur besitzt, die ihre kontrollierte Verformung nach hinten ermöglicht, wobei diese Struktur durch mechanische Mittel (12) und gleichzeitig durch die Eigenschaften des Materials (13) eine Gesamtflexibilität besitzt,
    - wobei der vordere Teil (17) des Sitzes am Gestell angebracht ist und wobei der hintere Teil (14) einteilig mit der Rückenlehne (13) gegossen und am vorderen Teil schwenkbar angebracht ist,
    dadurch gekennzeichnet, daß:
    - die mechanischen Mittel, die die elastische Kippung der Rückenlehne ermöglichen, umfassen: eine Platte (20), die an der Schwenkachse (16) des Sitzes schwenkbar angebracht ist, eine Feder (21), die mit dieser Platte so zusammengefügt ist, daß bei einer Kippung des Stuhls nach hinten die Platte unter einer Komprimierung der Feder schwenkt und dabei im Sitz eine Steifigkeit erzeugt, die der von der Platte ausgeübten Kraft entgegenwirkt,
    - eine Einstellschraube (24), die die Einstellung der Steifigkeit ermöglicht,
    - und einen Läufer (26), der an der Feder befestigt ist und ein Innengewinde aufweist, wobei die Einstellschraube mit dem Innengewinde so zusammenwirkt, daß bei einer Drehung der Schraube durch den Benutzer der Läufer verschoben wird und dabei den Punkt der Platte ändert, auf den die Feder ihre Kraft ausübt.
  2. Stuhl gemäß Anspruch 1, dadurch gekennzeichnet, daß er ein Mittel für die Verriegelung des gegossenen Teils in jeder Kipposition aufweist.
  3. Stuhl gemäß Anspruch 2, dadurch gekennzeichnet, daß das Verriegelungsmittel eine Pleuel-Schubstange (26') ist, die durch einen äußeren Hebel betätigt wird, um an der Platte in Anschlag zu gelangen.
  4. Stuhl gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß er in Verbindung mit den mechanischen Mitteln eine Rückenlehnenstruktur aufweist, die unter dem Druck des Körpers einer sitzenden Person zuläßt, daß sich der obere Bereich dieser Rückenlehne vorzugsweise auf Höhe der Schultern diese sitzenden Person elastisch nach hinten durchbiegt.
  5. Stuhl gemäß Anspruch 4, dadurch gekennzeichnet, daß die Struktur im Bereich der Rückenlehne in Form von horizontalen Rippen (5) gegeben ist, deren zur Rückseite des Stuhls gewandter Anteil dick und steif ist, während der zur Vorderseite des Stuhls gewandte Anteil (7) verjüngt und abgerundet ist, derart, daß von hinten gesehen dieser Bereich der Rückenlehne eine Reihe von sehr schmalen Rinnen aufzuweisen scheint, die dazu geeignet sind, unter dem Druck der sitzenden Person zusammengedrückt zu werden und dabei eine leichte und begrenzte Biegung des Oberteils der Rückenlehne nach hinten zulassen.
  6. Stuhl gemäß den Ansprüchen 4 und 5, dadurch gekennzeichnet, daß im Inneren der Rinnen vorgesehene Anschläge (8) die Amplitude diese Biegung zu begrenzen erlauben.
  7. Stuhl gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das einzige gegossene Teil mit einer metallischen Struktur verbunden ist, die die Form einer aus Metallrohren (33-34) verwirklichten Mulde aufweist, deren dem Sitz entsprechender im wesentlichen horizontaler Bereich sich unter dem entsprechenden Bereich des gegossenen Teils befindet, während der die Rückenlehne bis zum Biegungsbereich verstärkende im wesentlichen vertikale Bereich sich vor dem dem gegossenen Teil entsprechenden Bereich befindet, so daß diese Rohre durch das gegossene Teil im Verbindungsbereich zwischen dem Sitz und der Rückenlehne verlaufen.
  8. Stuhl gemäß Anspruch 7, dadurch gekennzeichnet, daß er Armlehnen umfaßt, die an der metallischen Struktur befestigt sind.
  9. Stuhl gemäß einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß das einzige gegossene Teil aus Polypropylen ist.
EP88440069A 1987-09-22 1988-08-30 Ergonomischer Stuhl Expired - Lifetime EP0309368B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88440069T ATE86450T1 (de) 1987-09-22 1988-08-30 Ergonomischer stuhl.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8713248A FR2620607B1 (fr) 1987-09-22 1987-09-22 Siege ergonomique
FR8713248 1987-09-22

Publications (2)

Publication Number Publication Date
EP0309368A1 EP0309368A1 (de) 1989-03-29
EP0309368B1 true EP0309368B1 (de) 1993-03-10

Family

ID=9355204

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88440069A Expired - Lifetime EP0309368B1 (de) 1987-09-22 1988-08-30 Ergonomischer Stuhl

Country Status (7)

Country Link
US (1) US4981326A (de)
EP (1) EP0309368B1 (de)
AT (1) ATE86450T1 (de)
CA (1) CA1285468C (de)
DE (1) DE3879062T2 (de)
ES (1) ES2039685T3 (de)
FR (1) FR2620607B1 (de)

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5050931A (en) * 1986-04-10 1991-09-24 Steelcase Inc. Controlled deflection front lip for seating
US5106157A (en) * 1989-03-01 1992-04-21 Herman Miller, Inc. Chair height and tilt adjustment mechanisms
FR2654683B1 (fr) * 1989-11-22 1992-03-13 Faure Bertrand Automobile Perfectionnements aux sieges avant des vehicules automobiles.
DE4114983A1 (de) * 1991-05-08 1992-11-26 Sifa Sitzfabrik Gmbh Vorrichtung zur neigungsverstellung von sitzmoebeln, insbesondere buerodrehstuehlen
US5249839A (en) * 1991-11-12 1993-10-05 Steelcase Inc. Split back chair
BR9307981B1 (pt) 1992-06-15 2010-07-27 encosto para uma cadeira.
CA2116079C (en) * 1993-02-22 2005-12-27 Benjamin Cowan Chair
US5577807A (en) 1994-06-09 1996-11-26 Steelcase Inc. Adjustable chair actuator
US5765914A (en) 1995-06-07 1998-06-16 Herman Miller, Inc. Chair with a tilt control mechanism
US5725276A (en) * 1995-06-07 1998-03-10 Ginat; Jonathan Tilt back chair and control
CA2158237A1 (en) * 1995-09-13 1997-03-14 Paolo Favaretto Chair with a pivoting backrest
NL1002523C2 (nl) * 1996-03-04 1997-09-05 Rudimec B V Kantelbare kantoorstoel.
US5975634A (en) 1997-10-24 1999-11-02 Steelcase Development Inc. Chair including novel back construction
US6250715B1 (en) 1998-01-21 2001-06-26 Herman Miller, Inc. Chair
US6065803A (en) * 1999-05-05 2000-05-23 L&P Property Management Company Seat back tilt control apparatus
AU783829B2 (en) 2000-09-28 2005-12-08 Formway Furniture Limited A reclinable chair
USD463144S1 (en) 2000-09-28 2002-09-24 Formway Furniture Limited Chair
USD445580S1 (en) 2000-09-28 2001-07-31 Formway Furniture Limited Chair
AUPR054400A0 (en) 2000-09-29 2000-10-26 Formway Furniture Limited A castor
US6585320B2 (en) 2001-06-15 2003-07-01 Virco Mgmt. Corporation Tilt control mechanism for a tilt back chair
US6890030B2 (en) * 2001-07-31 2005-05-10 Haworth, Inc. Chair having a seat with adjustable front edge
US7040703B2 (en) * 2002-03-29 2006-05-09 Garrex Llc Health chair a dynamically balanced task chair
US20050046258A1 (en) * 2003-07-09 2005-03-03 Sanchez Gary L. Task chair
US7625046B2 (en) * 2002-03-29 2009-12-01 Garrex Llc Task chair
NZ518944A (en) * 2002-05-14 2004-09-24 Formway Furniture Ltd Height adjustable arm for chair with outer stem releasably lockable to inner stem by engagement of recesses
US7226130B2 (en) 2002-09-12 2007-06-05 Steelcase Development Corporation Seating with comfort surface
US7341233B2 (en) * 2003-09-19 2008-03-11 L & P Property Management Company Horizontal adjustment mechanism for use on a chair seat
ES2282833T3 (es) * 2004-01-26 2007-10-16 Pro-Cord S.P.A. Silla con respaldo inclinable.
US7396078B2 (en) * 2004-02-05 2008-07-08 Wenger Corporation Music posture chair
US7237841B2 (en) * 2004-06-10 2007-07-03 Steelcase Development Corporation Back construction with flexible lumbar
US7458637B2 (en) * 2004-06-10 2008-12-02 Steelcase Inc. Back construction with flexible lumbar
US7159942B2 (en) * 2004-08-26 2007-01-09 L & P Property Management Company Seat slide adjustment mechanism
CN105832035B (zh) 2005-03-01 2019-04-23 霍沃思公司 具有腰部和骨盆支承件的座椅靠背
US7478880B2 (en) 2005-03-08 2009-01-20 L&P Property Management Company Multi-purpose adjustment chair mechanism
ITVE20050027A1 (it) 2005-04-28 2006-10-29 Imarc Spa Dispositivo di regolazione della forza di oscillazione in meccanismi per sedie da ufficio.
JP4295266B2 (ja) * 2005-11-04 2009-07-15 株式会社岡村製作所 椅子の背凭れ装置
JP5301446B2 (ja) 2006-10-04 2013-09-25 フォームウェイ ファーニチャー リミテッド 椅子
CN102772051B (zh) 2007-01-29 2016-05-18 赫尔曼米勒有限公司 座位结构及其使用方法
US8015981B2 (en) * 2007-08-19 2011-09-13 Anastasia Soare Stencils and gauging device for aesthetically pleasing eyebrow shaping
EP2110051A1 (de) * 2008-04-18 2009-10-21 Pro-Cord S.P.A. Stuhl
CA2698242C (en) 2008-05-26 2017-10-24 Gordon J. Peterson Conforming back for a seating unit
US7681952B2 (en) * 2008-06-06 2010-03-23 Pro-Cord S.P.A. Chair with tiltable backrest
EP2571397B1 (de) * 2010-05-18 2020-04-29 Aria Enterprises, Inc. Tragbares, kompaktes und zusammenklappbares möbelstück
US8567864B2 (en) 2011-08-12 2013-10-29 Hni Corporation Flexible back support member with integrated recline stop notches
JP6067104B2 (ja) * 2012-05-04 2017-01-25 株式会社イトーキ 椅子
USD707995S1 (en) 2012-05-23 2014-07-01 Hni Technologies Inc. Chair
US9198514B2 (en) 2012-05-23 2015-12-01 Hni Technologies Inc. Chair with pivot function and method of making
US8820835B2 (en) 2012-08-29 2014-09-02 Hni Technologies Inc. Resilient chair incorporating multiple flex zones
USD697726S1 (en) 2012-09-20 2014-01-21 Steelcase Inc. Chair
USD696545S1 (en) 2013-07-30 2013-12-31 Steelcase, Inc. Rear surface of a chair back
EP3217844A1 (de) * 2014-11-13 2017-09-20 L&P Property Management Company Kippmechanismus für ein auf gewicht reagierendes sitzmöbel
ITUB20150149A1 (it) * 2015-02-17 2016-08-17 Pro Cord Spa Sedia con sedile oscillante
US11259637B2 (en) 2015-04-13 2022-03-01 Steelcase Inc. Seating arrangement
AU2016247797B2 (en) 2015-04-13 2019-08-01 Steelcase Inc. Seating arrangement
US10966527B2 (en) 2017-06-09 2021-04-06 Steelcase Inc. Seating arrangement and method of construction
US10194750B2 (en) 2015-04-13 2019-02-05 Steelcase Inc. Seating arrangement
US10463153B2 (en) * 2016-06-09 2019-11-05 Steelcase Inc. Seating arrangement
EP3508095B1 (de) * 2016-09-01 2021-02-24 UE Furniture Co., Ltd Stuhlstruktur und stuhl
US10322656B2 (en) * 2017-07-28 2019-06-18 GM Global Technology Operations LLC Folding furniture piece system and method
WO2019032971A1 (en) 2017-08-10 2019-02-14 Hni Corporation CHAIRS COMPRISING FLEXIBLE FRAMES
US10427762B1 (en) * 2018-04-25 2019-10-01 Matthew Gregory Mosher Boat seat
EP3982790A4 (de) * 2019-06-11 2023-07-05 MillerKnoll, Inc. Stuhl
IT202100014576A1 (it) * 2021-06-04 2022-12-04 Pro Cord Spa Sedia con schienale flessibile

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202390A1 (de) * 1985-05-23 1986-11-26 VOKO Franz Vogt & Co. KG Sitzmöbel

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL85451C (de) * 1955-06-02 1957-06-15
US3434756A (en) * 1967-04-17 1969-03-25 Cramer Ind Inc Chair with adjustable back and arm rests
US3741607A (en) * 1970-10-05 1973-06-26 H Cramer Chair
CH591226A5 (en) * 1975-09-05 1977-09-15 Giroflex Entwicklungs Ag Chair with pivoting backrest support arm - whose pivot axis is located in front of seat section support tube
DE2817121C2 (de) * 1978-04-19 1985-10-10 Siemens AG, 1000 Berlin und 8000 München Gefahrenmeldeanlage
US4533177A (en) * 1979-06-06 1985-08-06 Knoll International, Inc. Reclining chair
NL8103037A (nl) * 1981-06-23 1983-01-17 Gispen & Staalmeubel Bv Stoel.
DE3604534A1 (de) * 1986-02-13 1987-08-20 Hartmut Lohmeyer Sitzmoebel mit einem sitz und einer in sich elastisch nachgebenden rueckenlehne
US5050931A (en) * 1986-04-10 1991-09-24 Steelcase Inc. Controlled deflection front lip for seating

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0202390A1 (de) * 1985-05-23 1986-11-26 VOKO Franz Vogt & Co. KG Sitzmöbel

Also Published As

Publication number Publication date
EP0309368A1 (de) 1989-03-29
ATE86450T1 (de) 1993-03-15
DE3879062D1 (de) 1993-04-15
FR2620607B1 (fr) 1991-03-15
US4981326A (en) 1991-01-01
ES2039685T3 (es) 1993-10-01
DE3879062T2 (de) 1993-08-26
FR2620607A1 (fr) 1989-03-24
CA1285468C (fr) 1991-07-02

Similar Documents

Publication Publication Date Title
EP0309368B1 (de) Ergonomischer Stuhl
EP0108760B1 (de) Gelenkter sitz
FR2676630A1 (fr) Mecanisme d'interconnexion destine a supporter une assise et un dossier d'un fauteuil.
EP0277870A1 (de) Bedienungsvorrichtung für verstellbare Sessel, Stühle und Sofas mit Lendenstütze
EP0815778B1 (de) Verbesserungen für Systeme mit differentieller Formung von Rückenlehnen von Bürostühlen
FR2654316A1 (de)
FR2616307A1 (fr) Agencement de controle d'inclinaison pour sieges de bureau
LU81935A1 (fr) Chaise
FR2725352A1 (fr) Meuble utilise pour s'asseoir, notamment chaise ou fauteuil de bureau, comportant un mecanisme de basculement du siege et du dossier
MX2015002808A (es) Silla con respaldo y asiento ajustables.
EP0700651B1 (de) Neue Struktur für Bürostühle
FR2594663A1 (fr) Chaise ou fauteuil a inclinaison variable et synchronisee de l'assise et du dossier
CA1069035A (fr) Meuble pour s'asseoir
KR102210240B1 (ko) 탄성력 조절이 가능한 의자 등받이 경사 조절기구
EP0218502A1 (de) Ruhemöbel mit unabhängigen Steuerungen
FR2862850A1 (fr) Ensemble de relaxation pour l'ameublement ou l'automobile, du type canape, fauteuil ou siege transformable, pouvant fonctionner en etant positionne directement contre une paroi
EP0156814B1 (de) Gegliederter sitz
EP0545921A1 (de) Torsionsfeder und einstellbarer einbau für einen stuhl solch eine feder benutzend.
FR2473864A1 (fr) Chaise, en particulier chaise de travail ou siege pour travail debout
FR3069765B1 (fr) Siege ergonomique reglable
FR2557441A1 (fr) Siege, notamment pour poste de travail
EP0774222B1 (de) Stuhl, welcher an die Körperform des Benutzers anpassbar ist
FR2849360A1 (fr) Dispositif de reglage de la force de compression du ressort dans une articulation pour siege
CH618331A5 (en) Chair with movable back and seat
FR2847211A1 (fr) Siege de vehicule automobile

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19890414

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: STEELCASE STRAFOR

17Q First examination report despatched

Effective date: 19910327

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930310

REF Corresponds to:

Ref document number: 86450

Country of ref document: AT

Date of ref document: 19930315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3879062

Country of ref document: DE

Date of ref document: 19930415

ITF It: translation for a ep patent filed

Owner name: STUDIO TORTA SOCIETA' SEMPLICE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930602

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19930830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19930831

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930831

Ref country code: LI

Effective date: 19930831

Ref country code: CH

Effective date: 19930831

Ref country code: BE

Effective date: 19930831

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3008032

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2039685

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

BERE Be: lapsed

Owner name: STEELCASE STRAFOR

Effective date: 19930831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940301

26N No opposition filed
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940429

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19940817

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19940818

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940822

Year of fee payment: 7

REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3008032

EUG Se: european patent has lapsed

Ref document number: 88440069.8

Effective date: 19940310

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19950830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 19950831

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19950830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960501

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19990601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050830