EP0139939B1 - Support de siège pour chaises, notamment chaises tournantes de travail - Google Patents

Support de siège pour chaises, notamment chaises tournantes de travail Download PDF

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Publication number
EP0139939B1
EP0139939B1 EP84109535A EP84109535A EP0139939B1 EP 0139939 B1 EP0139939 B1 EP 0139939B1 EP 84109535 A EP84109535 A EP 84109535A EP 84109535 A EP84109535 A EP 84109535A EP 0139939 B1 EP0139939 B1 EP 0139939B1
Authority
EP
European Patent Office
Prior art keywords
seat bracket
seat
crosshead
clamping
plates
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
Application number
EP84109535A
Other languages
German (de)
English (en)
Other versions
EP0139939A1 (fr
Inventor
Konrad Neumüller
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.)
Sifa Sitzfabrik GmbH
Original Assignee
Neumueller Konrad
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 Neumueller Konrad filed Critical Neumueller Konrad
Priority to AT84109535T priority Critical patent/ATE47652T1/de
Publication of EP0139939A1 publication Critical patent/EP0139939A1/fr
Application granted granted Critical
Publication of EP0139939B1 publication Critical patent/EP0139939B1/fr
Expired 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
    • A47C1/022—Reclining or easy chairs having independently-adjustable supporting parts
    • A47C1/024—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable inclination
    • A47C1/027—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable inclination by means of clamps or friction locking members
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating
    • Y10T74/18984—Inclined ramp

Definitions

  • the invention relates to a seat support for chairs, in particular work swivel chairs, which can be connected via a support to a foot frame of the chair and, for the purpose of this connection, is equipped with a bearing block which receives the projecting end of the support, in particular non-positively, the seat support having a U-shaped base body has, and this bearing block is immovably inserted in this base body, as this seat support is equipped with a support body for carrying a seat surface resting on it and the position of the seat surface is adjustable in inclination to the base body, and the base body with a number of functional parts for it Height adjustment on the one hand and inclination adjustment of the seat surface is equipped on the other, these functional parts, with the exception of their manually actuating parts, are arranged within the legs of the U-shaped parts of the seat support and on which seat support the respective U-shaped n Parts of the base body and support body are connected to one another in an articulated manner and via intermeshing lamellae, of longitudinal and transverse lamella packages
  • the seat support is formed by two functional parts, usually a base body and a support body supporting the seat surface, which are articulated to one another and can be adjusted relative to one another in their inclined position.
  • the holder for the backrest can usually also be designed to be inclinable, and this seat support is equipped with locking parts in order to be able to set and hold the desired inclination position.
  • the support body for the seat surface is connected to the base body via an articulated connection, and the support body is additionally non-positively connected to a longitudinal disk set on a longitudinal disk set of the base body supported.
  • the lamellae of these lamellae packs which are meshing with one another, can be braced by means of a pressure element in the desired immersion depth, whereby the inclination of the support element to the base element is also changed.
  • the pressure body which is designed as a nut that can be screwed onto a threaded bolt in this embodiment, can tighten the slats by turning this nut clockwise, but counterclockwise these slats relax, so that the slats of the cross plate pack can move through the slats of the longitudinal plate pack .
  • the nut of the pressure body is embedded in a knob and can be screwed onto the threaded bolt with it.
  • the bracket for the backrest is guided vertically on a clamping head, which is connected to the base body via a joint.
  • the clamping head can be tilted about this joint, for which purpose the lamellae of the longitudinal lamella packet articulated on this clamping head are arranged so as to be longitudinally displaceable in a sleeve holding them.
  • the inclination of the seat and backrest can be adjusted at the same time by means of this pressure element, but tightening the slats requires a greater amount of manual force in order to be able to screw the nut firmly onto the threaded bolt or to loosen it again.
  • an eccentric is arranged in the base body about an adjustment axis, which, by correspondingly rotating its eccentric surfaces on the base body, positively engages or lifts off.
  • the invention has for its object to provide a seat support for chairs in which the parts to be adjusted, adjusted without great effort, and held after their adjustment in the desired inclination position and in addition, these parts save space and not directly accessible from the outside Seat supports can be accommodated, as can the pressure for the bracing of the parts can be easily adjusted.
  • this object is achieved with a seat support of the type mentioned solved in that the U-shaped support body is equipped with at least one perpendicular to this cross strut that the extending in the direction of the longitudinal central axis of the seat bracket slats of the longitudinal plate pack are mounted on the one hand on the hinge pin of the clamping body and on the other at least one bearing pin of the clamping head that the perpendicular to the direction of the longitudinal center axis of the seat support slats of the transverse plate pack are mounted on the same on the same bearing pin of the clamping body and on the other on a bearing pin of the base body that the clamping body of at least one sitting on a bolt and against the leg of the support body supporting spring and a trigger actuating it is formed that a bearing block is provided between the plate packs and the leg of the support body for the transmission of the tension force of the spring to the plates of the plate packs, and that for actuating this bearing block Trigger lever is connected to this, the elongation of which can be
  • the clamping body for the non-positive connection of the individual plate packs can be made very compact, and yet it has sufficient rigidity to exert a high surface pressure on the individual plates of the plate packs via its adjacent pressure plate.
  • the seat support 1 is essentially formed by a base body 2, a base part 3, a clamping body in the form of a clamping device 4 together with bracing 5 for the inclination of a seat surface 6 and a backrest (not shown in the drawing) and articulated on a support bracket 7, the bracket is axially guided in a clamping head 8.
  • the seat support 1 and thus its base body 2 is formed from a U-shaped sheet metal part, which is equipped with a series of recesses 9 and bores 10 for the implementation and storage of levers 11 and axes 12, as well as with a bearing block 13 for the positive connection of the support 14 of the seating is formed.
  • the bearing block 13 is provided in the region of one end of this base body, and this is formed by a sheet metal part which has a bore 17 . Coaxial to this bore 17 is a further bore 18 of different diameters for the free end provided with a conical end 19 of the column. In the area of the free end 20 of the base body 2 and thus in the vicinity of this bearing block 13, the base body has cramp-shaped formations 21 which serve to additionally strengthen the bearing block on this base body.
  • the legs 15, 16 of the U- Shaped base body 2 at its end facing away from the bearing block 13 various bores 10 "', of which two end bores for carrying out a bearing axis 12"' for the clamping head 8 and the bores 10 '' adjacent to these bores 10 for carrying out a further axis of rotation 24 for a cap 25 are intended.
  • Analogous to these arrangements of various bushings 9, 10, 2 further recesses 26 are provided on the intermediate web of the U-shaped base body, one of which is approximately square, for the insertion of a plurality of slats 27 of a transverse disk pack and for the articulation of this disk pack bearing eyes 28 for a hinge pin 29 this base body 2 are attached.
  • the base part 3 which acts functionally with the base body 2, is preferably T-shaped, one part of which, i. H. whose support body 30 from a U-shaped sheet and its other part, d. H. whose crossbar 31 is formed by an angular, further sheet.
  • the two parts d. H. Support body 30 and crossbar 31 are preferably connected in a non-detachable manner by welding, and the crossbar 31 is provided with recesses 32 for fastening it to the seat 6 to be supported.
  • the U-shaped support body 30 of the base part 3 is provided on its legs 15, 16 with bores 10 for the passage of hinge axes 12 and / or the release lever 23, the hinge axis 12 being provided in the immediate vicinity of the crossbar 31 and the other recesses 34 , 35 for the release lever 23 are attached along the legs 36, 37 of the U-shaped base body 2.
  • the clamping device 4 and the bracing 5 for the inclination adjustment of the seat surface 6 and the back surface ie. H.
  • Support bracket 7, provided, which consists essentially of the two plate packs 27, 38 and the non-positively acting tension 5 on these packets.
  • the disk packs 27, 38 are formed by a longitudinal disk pack 38 and a transverse packet 27 running transversely thereto, the lamellae of which are held together by the individual disk combs by base plates 57, 58 and by the clamping pressure of the bracing 5.
  • the bracing 5 itself consists of a bearing block 39, which is held in hinge pins 40, 41, which in turn are supported in the legs 36, 37 of the U-shaped base part 3, and which bearing block 39 has an indentation 42 between the bearings on the bearing bolts has the free end 43 of the release lever 11.
  • the indentation 42 for this free end 43 is designed in the form of a groove, and compression springs 44 are provided around the bearing bolts 40, 41, which are supported resiliently between the one leg 37 of the base part 3 and the bearing block 39 itself.
  • pressure plates 45, 46 are provided, through which the bearing bolts 40, 41 are also guided and which by means of these bolts on the U-shaped base 3 remain held.
  • the bearing block 39 acts in a force-fitting manner, and this bearing block can only be lifted off the pressure plate when the release lever 11 is pressed with a force acting against the pressure of the springs 44.
  • a length compensation is provided on the release lever, this length compensation being formed by sleeves 47, 48 with conical contact surfaces 49 and a cap sleeve 50 locking these sleeves.
  • a distance is provided between the sleeves 47, 48 themselves and the U-shaped leg 37 of the base part 3, which is preferably filled with a metallic disc 51 which sits on the bumps 52.
  • the release lever is provided with knobs 53 against which the sleeves are supported after the adjustment of their longitudinal distance.
  • the cap sleeve 50 as well as the sleeves 47, 48 themselves are provided with longitudinal grooves 54 which engage in a form-fitting manner after the length distance has been set and prevent the sleeves from turning back on their conical contact surfaces 49.
  • the clamping device that is to say the clamping device 4 and bracing 5 itself, which has the longitudinal disk pack 38 and the transverse disk pack 27, is mounted and guided via these packets both on the base part 3 and here in the bearing bolts 40, 41, 29 and 56, one end this longitudinal disk pack 38 is pivotably supported in one bearing pin 41 and the adjacent section of this disk pack is slidably guided on the other bearing pin 40.
  • the cross plate pack 27, which has approximately the shape of a triangle, is with one tip in the base body 2 and here around the bearing pin 29, which in the eyes 28 of the Base body 2 is mounted, as well as held on the further bearing bolts 40, 41.
  • the longitudinal plate pack 38 which in turn is rotatably supported at one end on the one bearing pin 41 and slidably guided on the adjacent bearing pin 40, is mounted with its other, free end 55 around a bearing pin 56 of the clamping head 8, so that with the same actuation of the Bracing 5, both the inclination of the seat 6 and the inclination of the back surface or the bracket 7 can be changed.
  • the base part 3 can be tilted about its articulation 10 'on the base body 2 in accordance with the change in the clamping device 4 and bracing 5 about its articulation, as a result of which the individual position of the seat surface 6 and / or the backrest surface, i. H. Support bracket 7, can be adjusted.
  • the individual position of the seat surface 6 and / or the backrest surface, i. H. Support bracket 7, can be adjusted.
  • an angular release lever 23 can be used be rotatably mounted in the base body 2 in such a way that this lever remains tensioned in a position shortly before the gas spring is triggered by a spring 59.
  • a crank 60 located on this lever presses the trigger pin of the gas spring and presses it inward until the desired height of the support 14 has been reached.
  • the lever 23 itself for triggering the gas spring is therefore not removed Pressure of the gas spring kept in this so-called rest position, but it rests in this position by the effect the tensioning spring 59, which is supported on the one hand against the release lever 23 and on the other hand against a bearing pin 61 on the base body 2.
  • the longitudinal plate pack 38 can be uncoupled accordingly, so that the transverse plate pack 27 and thus its slats together with pressure plates 45, 46 are retained, which are then by the same clamping device 4 and bracing 5 can be kept in the closed or rest position.
  • the base part 22 can be tilted about its articulated connection 10 ′ against the base body 2, as is also indicated in the tilting tendons 62 for the base part 22 or the support bracket 7 and the cap 25.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Chairs Characterized By Structure (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Claims (8)

1. Porte-siège pour sièges, notamment sièges tournants de travail, lequel peut être relié à une base du siège par l'intermédiaire d'un support et pour des besoins de liaison équipé d'un appui, reprenant en particulier de façon adhérente l'extrémité en saillie du support, le porte-siège (1) présentant un corps de base (2) en forme de U et cet appui (13) étant intégré dans ce corps de base (2) de façon indéplaçable, tout comme ce porte-siège (1) est équipé d'un corps porteur (30) supportant l'assise (6) qui y prend appui ainsi que l'assise étant réglable en inclinaison par rapport au corps de base (2) et le corps de base étant équipé d'une série de parties fonctionnelles pour le réglage en hauteur d'une part et le réglage en inclinaison de l'assise d'autre part, ces parties fonctionnelles, à l'exception de ses parties actionnées manuellement, étant disposées dans les montants (15, 16) des pièces en forme de U du porte-siège (1) et chez lequel porte-siège les pièces en forme de U du corps de base (2) et du corps porteur (30) étant à chaque fois reliées entre elles de façon articulée ainsi que par des lamelles de paquets de lamelles longitudinales et transversales (38, 27), desquelles une partie est reliée de façon articulée au corps de base et au corps porteur (2, 30) et une autre partie au support de base et à l'étrier porteur (7) du porte-dossier et l'inclinaison du corps de base et du corps porteur, comme celle de l'étrier porteur du porte-dossier pouvant être fixée dans leur position d'inclinaison au moyen d'un corps tendeur (4, 5) maintenant de façon adhérente les lamelles entre elles, caractérisé en ce que le corps porteur (30) en forme de U est équipé par au moins une entretoise (31), dirigée verticalement à celui-ci, que les lamelles du paquet longitudinal de lamelles (38), dirigées dans le sens de l'axe central longitudinal (X) du porte-siège (1), sont logées d'une part au boulon articulé (41) du corps tendeur (dispositif de serrage 4, haubanage 5), et d'autre part à au moins un boulon de palier (56) de la tête de serrage (8), que les lamelles du paquet transversal de lamelles (37), dirigées verticalement à l'axe central longitudinal (X) du porte-siège (1) sont logées d'une part au même boulon articulé (41) du corps tendeur (4, 5) et d'autre part à un boulon de palier (29) du corps de base (2), que le corps tendeur (4, 5) est formé par au moins un ressort (44), reposant sur un boulon articulé (40, 41) et s'appuyant contre le montant (36, 37) du corps porteur (30) et un déclenchement (47-54) actionnant ce ressort, que pour la transmission de la force de tension du ressort (44) sur les lamelles des paquets de lamelles (27, 38) un appui (39) est prévu entre les paquets de lamelles et le montant (37) du corps porteur (30), et que pour l'actionnement de cet appui (39) un levier (11) est raccordé à celui-ci, dont l'allongement peut être modifié au moyen d'une compensation de longueur (47-49) pour le réglage de la force de tension du ressort (44).
2. Porte-siège selon revendication 1, caractérisé en ce que l'appui (39) est disposé entre les paquets de lamelles (27, 38) et le montant (37) du corps porteur (30) et que cet appui présente un enfoncement (42) en forme de rainures pour l'extrémité libre (43) du levier (11) qui s'y engrène. 3. Porte-siège selon revendication 2, caractérisé en ce que l'appui (39) est maintenu par deux boulons articulés (40, 41) disposés symétriquement à l'enfoncement, et peut être pressé par les ressorts (44) contre des corps de pression (plaques de pression 45, 46) des paquets de lamelles (27, 38).
4. Porte-siège selon revendication 2, caractérisé en ce que l'appui (39) en position de repos des paquets de lamelles (27, 38) est relié de façon adhérente avec ces paquets par l'intermédiaire de plaques de pression (45, 46).
5. Porte-siège selon revendication 1, caractérisé en ce que le déclenchement (47-54) est formé par deux douilles (47, 48) haubanées axialement l'une contre l'autre, et par un manchon (50) pouvant recouvrir les deux douilles et pouvant être relié de façon crabotée avec ces douilles, tout comme un écarteur (51, 52) pouvant être haubané entre les douilles et un montant (37) du corps porteur (30).
6. Porte-siège selon revendication 5, caractérisé en ce que les douilles (47, 48) pour l'haubanage axial présentent sur leurs côtés se faisant face des surfaces d'attaque (49) outre des délimitations, et que ces surfaces d'attaque provoquent l'allongement axial en torsionnant au moins une des douilles.
7. Porte-siège selon revendication 6, caractérisé en ce que les douilles (47, 48) en plus de leurs délimitations, sont également tenues entre des butées d'extrémité (51, 52, 53) au levier de déclenchement (11).
8. Porte-siège selon revendication 1, caractérisé en ce que les lamelles du paquet transversal de lamelles (27), dirigées verticalement au sens de l'axe central longitudinal (X) du porte-siège (1) présentent une forme triangulaire et qu'elles sont logées et/ou guidées dans la zone de leurs angles dans les boulons de palier (40, 41, 29).
EP84109535A 1983-08-12 1984-08-10 Support de siège pour chaises, notamment chaises tournantes de travail Expired EP0139939B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84109535T ATE47652T1 (de) 1983-08-12 1984-08-10 Sitztraeger fuer stuehle, insb. arbeitsdrehstuehle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP83108004 1983-08-12
EP83108004 1983-08-12

Publications (2)

Publication Number Publication Date
EP0139939A1 EP0139939A1 (fr) 1985-05-08
EP0139939B1 true EP0139939B1 (fr) 1989-11-02

Family

ID=8190631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84109535A Expired EP0139939B1 (fr) 1983-08-12 1984-08-10 Support de siège pour chaises, notamment chaises tournantes de travail

Country Status (7)

Country Link
US (1) US4636004A (fr)
EP (1) EP0139939B1 (fr)
CY (1) CY1588A (fr)
DE (2) DE3424756A1 (fr)
GR (1) GR80075B (fr)
HK (1) HK17092A (fr)
ZA (1) ZA845415B (fr)

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DE3717008A1 (de) * 1987-05-21 1988-12-15 Konrad Neumueller Vorrichtung zum kraftschluessigen verspannen von auf reibungsdruck wirkenden lamellen, insb. fuer deren anwendung bei neigungsverstellungen der sitz- und/oder lehnenflaechen von arbeitsstuehlen und anderes
US4938531A (en) * 1988-03-23 1990-07-03 Email Limited Adjustment mechanism for chairs
US5785385A (en) * 1988-07-27 1998-07-28 Lie; Tore Locking device for chair seats
US5066069A (en) * 1990-05-03 1991-11-19 Systems Furniture Company Chair back and seat adjustment mechanism
IE66891B1 (en) * 1991-02-15 1996-02-07 Ashfield Eng Co Wexford Ltd An adjustment mechanism for furniture
DE9109184U1 (de) * 1991-07-25 1991-10-10 SIFA Sitzfabrik GmbH, 8458 Sulzbach-Rosenberg Sitzträger für Stühle
US5328242A (en) * 1992-03-18 1994-07-12 Steelcase Inc. Chair with back lock
US5282670A (en) * 1992-04-20 1994-02-01 Steelcase Inc. Cable actuated variable stop mechanism
DE4216173A1 (de) * 1992-05-15 1993-11-18 Sifa Sitzfabrik Gmbh Betätigungsvorrichtung für Verstellmechanismen von Sitzmöbeln
US5630648A (en) * 1992-08-27 1997-05-20 Harry C. Sweere Dynamic posture chair
IL103477A0 (en) * 1992-10-20 1993-03-15 Paltechnica Nitzanim Office and like chairs
US5356200A (en) * 1992-10-23 1994-10-18 Doerner Products Ltd. Unitary brake for a chair tilt mechanism
DE4335017A1 (de) * 1993-10-14 1995-04-20 Sifa Sitzfabrik Gmbh Betätigungsvorrichtung für Sitzträger für Stühle, insbesondere Drehstühle
US5464274A (en) * 1994-01-13 1995-11-07 Westinghouse Electric Corporation Chair seat tilt adjustment and locking mechanism
US5577807A (en) * 1994-06-09 1996-11-26 Steelcase Inc. Adjustable chair actuator
EP0809453B1 (fr) * 1995-02-15 2000-07-12 Ashfield Engineering Company Wexford Limited Dispositif de commande pour un mecanisme de blocage monte sur une chaise
US5676425A (en) * 1996-03-19 1997-10-14 R.A.M. Machines (1990) Ltd. Releasable lock forchair control mechanism
US5836555A (en) * 1996-06-07 1998-11-17 Safco Products Company Industrial chair
USD381823S (en) * 1996-06-07 1997-08-05 Safco Products Company Industrial chair
IT245520Y1 (it) * 1998-07-16 2002-03-22 Beniamino Miotto Dispositivo meccanico particolarmente per la movimentazione sincronadi sedile e schienale di una sedia.
US6598936B1 (en) 2001-04-11 2003-07-29 Michael N. Klein Multi-task mid-pivot chair control mechanism
US6394550B1 (en) * 2001-08-17 2002-05-28 Gen-Fong Liu Chair adjustment assembly
US6893096B2 (en) 2002-09-05 2005-05-17 A-Dec, Inc. Headrest support and adjustment mechanism
US7017992B2 (en) 2003-02-18 2006-03-28 Warvel Products, Inc.-N.C. Chair control device for a tiltable chair
ITVE20030014A1 (it) * 2003-04-10 2004-10-11 Imarc Spa Dispositivo di regolazione del grado di precarica delle molle in meccanismi di sedie da ufficio.
DE202005006960U1 (de) * 2005-04-28 2006-08-31 Bock 1 Gmbh & Co. Kg Synchronmechanik
US8454091B2 (en) * 2010-06-09 2013-06-04 Groupe Dutailier Inc. Chair adjustment mechanism
TWI827479B (zh) * 2023-02-22 2023-12-21 陳信華 椅子調整裝置的控制拉桿結構

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US1265104A (en) * 1917-05-07 1918-05-07 Leroy A Ogden Device for adjustably connecting alined rods.
GB401718A (en) * 1932-05-18 1933-11-20 Leabank Mfg Company Ltd Improvements relating to chairs and like seats
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DE2523308C2 (de) * 1975-05-27 1982-08-12 Konrad 8501 Burgthann Neumüller Sitzmöbel, insbesondere Bürodrehstuhl
US3974712A (en) * 1975-07-16 1976-08-17 Pennsylvania Wire Rope Corporation Auxiliary brake lever
US4062587A (en) * 1976-01-13 1977-12-13 Herman Miller, Inc. Back position control device for chairs
DE2630820A1 (de) * 1976-07-08 1978-01-12 Westfael Eisen & Stahl Lagereinheit und arretiervorrichtung fuer sitz- und/oder liegemoebel mit verstellbaren teilen
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DE2902622A1 (de) * 1979-01-24 1980-07-31 Steifensand Friedrich Martin Sitzmoebel, insbesondere buerodrehstuhl
DE2927377C2 (de) * 1979-07-06 1983-12-08 Steifensand Sitzmöbel- und Tischfabrik Inh.: F. Martin Steifensand, 8501 Wendelstein Sitzmöbel, insbesondere Bürodrehstuhl
US4270906A (en) * 1979-11-05 1981-06-02 Dyneer Corporation Belt tensioner construction
US4438978A (en) * 1981-11-18 1984-03-27 Tor Arild Tilt back mechanism for a chair

Also Published As

Publication number Publication date
CY1588A (en) 1992-04-03
GR80075B (en) 1984-12-14
ZA845415B (en) 1985-03-27
DE3424756A1 (de) 1985-02-28
HK17092A (en) 1992-03-13
DE3480321D1 (en) 1989-12-07
EP0139939A1 (fr) 1985-05-08
US4636004A (en) 1987-01-13

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