US3756654A - Article of seating furniture - Google Patents

Article of seating furniture Download PDF

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Publication number
US3756654A
US3756654A US00107021A US3756654DA US3756654A US 3756654 A US3756654 A US 3756654A US 00107021 A US00107021 A US 00107021A US 3756654D A US3756654D A US 3756654DA US 3756654 A US3756654 A US 3756654A
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United States
Prior art keywords
lever
operating lever
adjustment
back support
housing
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
US00107021A
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English (en)
Inventor
F Bauer
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.)
Suspa Federungstechnik GmbH
Original Assignee
Suspa Federungstechnik GmbH
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Filing date
Publication date
Priority claimed from DE19702004372 external-priority patent/DE2004372C3/de
Application filed by Suspa Federungstechnik GmbH filed Critical Suspa Federungstechnik GmbH
Application granted granted Critical
Publication of US3756654A publication Critical patent/US3756654A/en
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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
    • A47C3/20—Chairs or stools with vertically-adjustable seats
    • 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
    • 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 and lockable inclination
    • A47C1/026—Reclining or easy chairs having independently-adjustable supporting parts the parts, being the back-rest, or the back-rest and seat unit, having adjustable and lockable inclination by means of peg-and-notch or pawl-and-ratchet mechanism
    • 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—Supports for the head or the back
    • A47C7/40—Supports for the head or the back for the back
    • A47C7/402—Supports for the head or the back for the back adjustable in height

Definitions

  • the invention relates to an article of seating fumiture, more particularly a chair, with a seat and back rest adjustable to the particular body dimensions of the user.
  • a chair constructed in this manner is understandably expensive in manufacture since for each possibility of displacement, a separate operating lever, hand grip or the like is provided.
  • the number of operating levers makes it necessary to distribute them and correspondingly arrange them at different places on the chair frame carrying the seat, most of these places being inaccessible by the user, in the seated position. Consequently, frequently the greatest part of the adjustment possibility is not exploited at all.
  • the large number, of these operating levers detracts from the shape and the appearance of the chair so that in spite of the existing requirement, mainly only one or two displacement possibilities are provided with such chairs, in order to simplify and accordingly make more economic the manufacture of adjustable chairs.
  • the object of the invention is to arrange a known chair, which if desired may also be active against fatigue manifestations, with a seat and back rest adjustable to the individual body dimensions of the user, in such a manner that with a considerably lower structural expense, the adjustment of all variable dimensions or functions of the chair can be comfortably performed, more particularly in the seated position of the user.
  • a single operating lever is provided on the chair in correct relation to the seated position, which for engaging and releasing the devices locking the adjustable dimensions, is constructed so as to be movable in a cross or star shaped manner, interruptedly rotatable or axially displaceable or the like, and has a bent portion, a projection, extension or the like transferring its movement steps to the device.
  • the construction may be such that for height adjustment of the seat which is adjustable in inclination, preferably a pneumatic spring is built into a central vertical tubular base, its release pin extending out of the upper possibly frust-conical end of the pneumatic spring, the said end being rigidly fixed in a housinglike hub carrying the seat, the operating lever being rockably or rotatably mounted or otherwise pivoted in the housing-like hub, with the bent portion extending upwardly and with the oppositely disposed lower side cooperating with the release pin.
  • a pneumatic spring is built into a central vertical tubular base, its release pin extending out of the upper possibly frust-conical end of the pneumatic spring, the said end being rigidly fixed in a housinglike hub carrying the seat, the operating lever being rockably or rotatably mounted or otherwise pivoted in the housing-like hub, with the bent portion extending upwardly and with the oppositely disposed lower side cooperating with the release pin.
  • a latching lever constructed like a tumbler is arranged, which cooperates with the bent portion of the actuating lever, in the clockwise direction, its lever arm remote from the said bent region being in engagement with a pin which can be depressed against the action of a spring and which serves for latching the horizontal displacement of the back rest.
  • a double armed compensating lever is mounted for cooperating with this in the anti clockwise direction, its one lever arm engaging in an edge recess of the lever latching the horizontal displacement of the back rest and in its rest position lying against the bent portion of the operating lever, its other lever arm being connected by means of a cable, transmission rod or the like, with apin latching the height adjustment of the back rest.
  • the end of the axially displaceably constructed operating lever extending into the housing-like hub may have a normally open contact set, limit switch or the like, for closing the electric current circuit of for example a vibrator provided on the seat.
  • FIG. 1 is a side elevation of an article of seating furniture constructed as a chair with a tubular base, having a housing-like hub arranged at the underside of the seat shell;
  • FIG. 2 is a section through the housing-like hub fixed onto the tubular base or a pneumatic spring
  • FIG. 3 is a section through the partially illustrated latching device for the inclination of the seat shell or seat surface
  • FIG. 4 is a section through the partially illustrated mounting of the operating lever
  • FIG. 5 is a plan view showing an actuating diagram for the operating lever
  • FIG. 6 is a plan view showing a further actuating diagram
  • FIG. 7 is a fragmentary sectional view showing the arrangement of a vibrator.
  • a working chair has been selected, its seat or seat shell 1 being constructed so as to be adjustable in height and also in inclination.
  • the chair is provided with a back rest 2 which should be adjustable horizontally or parallel to the seat shell and also in its height or perpendicularly to the seat shell.
  • the seat may be provided with a vibrator (see FIG. 7) which when required is switched on for a more or less short time for combatting fatigue manifestations.
  • a housing-like hub 4 is provided below the seat shell 1, in which the devices which are actuatable by the operating lever 3, and which are required for the individual functions of the chair are provided.
  • the housinglike hub 4 is connected by means of a member 5 with a frusto-conically shaped head end 6 of a pneumatic spring 7 which has a release pin 8 extending through the frusto-conically shaped head end.
  • the pneumatic spring 7 is mounted in a guide tube 10 provided at its lower end with support arms 9, and is rotatably mounted with the free end of its piston rod (not shown) in the bottom of the guide tube.
  • the release pin 8 is depressed, whereby a blocking device is open so that the pressure gas can flow through a throttle region from the housing chamber in front of the working piston into the housing chamber behind the working piston, or vice versa.
  • the housing of the pneumatic spring and therewith the hub 4 with the seat shell can thus be displaced up or down until the blocking device is again closed by releasing the release pin 8, the adjusted seat being locked in the new position.
  • the construction of the pneumatic spring 7 and its rotatable arrangement in the tubular base which is designated in its entirety by refernece numeral 11 is the subject of Baur U.S. Pat. No. 3,656,593 and Baur U.S. Pat. (Ser. No.
  • the operating lever 3 provided if desired with a handle 12, serves for depressing the release pin 8.
  • the lever 3 is mounted in an opening 13 of the wall of the housing-like hub 4, by means of two transverse pins 14 which between them embrace the wall of the housinglike hub 4 with play and is limitedly rockable in all directions and rotatable, so that two lever arms are formed.
  • the operating lever terminates in its ineffective central position in the interior of the hub, with slight play directly above the release pin 8. If the operating lever 3 is swung upwardly outside at the handle 12, then the inner lever arm 15 presses the release pin downwardly in the direction of the arrow 16, whereby the already explained height adjustment of the seat shell 1 can be performed.
  • the seat shell or seat 1 which is mounted so as to be swingable about a shaft 17 of the housing-like hub 4 in the sitting direction or in the direction of the arrow 18, can be adjusted into a desired inclination and latched in this adjusted position.
  • the seat shell may for example be provided with a side piece 19 such as shown in FIG. 1, in chain dotted .lines and in FIG. 2 in full lines.
  • a pin 21 is axially displaceably mounted which can be disengaged against the action of a spring 55, the pin engaging in a corresponding aperture 22 of the side piece 19 under the action of this spring, for latching the adjusted seat shell inclination.
  • the latching pin 21 which for example is circular in cross section only at the head end but otherwise is for example square in cross section, has at the region of its inner end, an inclined guide 23 in one side, in which the adjacent and similarly inclined end 24, which can be swung up and down, of a two armed displacing lever 25 engages.
  • the latter is rockably mounted on a pivot axle 26 of the housinglike hub 4 and lies with its other end 27 on a support 28, in the latching position of the pin 21. Under this lever end, in the central or rest position of the operating lever 3, an extension or bent portion 29 or the like of the operating lever, which extends upwardly relative to the release pin 8, terminates.
  • a further double armed latching lever 31 is rockably mounted on the pivot axle 26.
  • the lever arm 32 remote from the bent portion 29 is formed at its free end as a fork which rests on the annular surface of a stepped pin 33. This is vertically guided in a bearing 34 and can be depressed against the action of a compression spring 35. Under the action of this compression spring, the narrow end engages in an aperture 36 of the horizontally extending part of a carrying bar 37, which may be in the form of a tube or the like, of the back rest 2.
  • the second lever arm 38 is constructed in the manner of a tumbler of a door lock. If the operating lever 3 is rotated in an anti-clockwise direction then the swinging movement remains without influence on the latching lever 31.
  • the back rest 2 may be constructed so as to be adjustable in height.
  • the horizontally displaceable carrying rod 37 which if desired is constructed as a tube, comprises at its end disposed outside the housing-like hub 4, for example a sleeve 41 with a vertically extending axis, in which a further carrying rod, a bar, or a tube 42 or the like is guided so as to be slidable axially up and down but nonrotatable.
  • the back rest 2 is mounted so as to be rockable by engagement of itself on the back of the user.
  • the actual or desired height of the back rest is adjusted by sliding the tube 42 in the sleeve 41 and latched for example by a transverse pin 44 guided in the sleeve and engaging in a corresponding aperture41 of the tube, rod or the like.
  • This transverse pin 44 may be under the action of a spring, not illustrated, which tends to press it against the vertically extending tube and thus into the respectively allocated openings 43.
  • the transverse pin 44 may be connected with one end of a cable, rod 45 or the like, illustrated only diagrammatically in FIG. 1, the other end of which is connected to the lower lever arm 46, which is vertical in the rest position, of a double armed compensating lever 47.
  • This compensating lever 47 is rockably mounted on an axle 48 for example at the height of the ineffective central position of the operating lever 3, and bears with the free end of its second lever arm 49 on the bent portion 29 of the operating lever 3. It extends into an edge recess 50 of the latching lever 31 so that on rotating the handle 12 of the operating lever 3 in the anti-clockwise direction, the bent portion 29 can displace the compensating lever 47 without actuating the latching lever 31 and the displacing lever 25.
  • the transverse pin 44 can be withdrawn from the vertical tube 42 or bar or the like carrying the back rest 2, so that the back rest can be adjusted to the desired height, at which the transverse pin 44 of the sleeve 41 then engages in the adjacent opening 43 of the tube 42.
  • the operating lever 3 may be mounted in the wall of the housing-like hub 4 so that additionally it can be slidably displaced axially into the interior of the hub, against the action of a spring. For this, the spacing for example of the outer transverse pin 14 from the hub wall is increased and a compression spring 51 provided between this transverse pin of the operating lever and the wall.
  • a switch 52 may be arranged which on axial sliding of the operating lever, closes an electric current circuit of a vibrator Vi, see FIG. 7.
  • the latter may for example be provided below the seat shell or the seat 1 in order to act against fatigue of the user of the chair. ln this respect the current circuit remains closed until the operating lever is again returned into its ineffective central position.
  • the single operating lever may also be so constructed and moved that it is operable like the gear shift lever of a motor vehicle.
  • FIG. 5 shows a cross shaped actuating diagram according to which the operating lever 3 is guided in two perpendicularly crossing slots 53 in a side wall of the housing-like hub 4.
  • the slots 54 which are only half as long, are arranged in a star shape.
  • the individual devices for the different functions of the working chair must in this case be so arranged and constructed that in accordance with the radially extending rocking movements of the operating lever, the different adjustments and latchings are enabled. It is not necessary that each working chair is fitted with four and more adjustment possibilities. Fewer, e.g. even only two may be provided.
  • Seating furniture for use with a pneumatic spring means comprising a single operating lever (3) having its fixed end (29) extending within a housing (4), a seat member (I) mounted above and supported by said housing, said housing (4) having a recess for resting upon an upper end (6) of a generally frusto-conically shaped head extending from a base (7,1 l said housing including means forvertical adjustment of a back support (42,2) operable by twisting of the operating-lever (3) to actuate a lever (49) to stress a cable (45) under bias to displace pin means(44) from an apertured vertical means (42) of said back support, and means for horizontal adjustment of the back support (42,2) operable by turning the lever (3) to actuate a lever arm (38) to depress a biased means (33) to release an apertured horizontal carrying bar (37) connected to said back support, said adjustment means being directly functional by the operating lever, and means for inclination adjustment of the back support byturning the lever (3) to actuate lever member (27
  • a further locking lever (31) cooperating with a continuation (29) of the operating lever (3) and developed in the manner of a bolt keeper is disposed on the swiveling axis (26) for the two-armed shifting lever (25) for the adjustment of the inclination of the seat member, the lever arm (32) of said lever facing away from the continuation (29) and engaging with a bolt (33) which can be depressed counter to the action of a spring (35) and locking the horizontal shifting of the back support (2).
  • a lever arm (38) of the locking bar (31) facing the swiveling axis has on its underside a recess (39) open at the edge and receiving the continuation (29) upon swiveling up of the lever arm (15) of the operating lever (3).
  • a two-armed compensating lever (47) is mounted for cooperating with said operating lever in a counterclockwise rotational direction, one of which lever arms (49) engages with a groove (50) opened at the edge of the lever (31) locking the horizontal shifting of the back support (2), in that it also fits in the rest position approximately against the continuation (29) of the operating lever (3) and in that its other lever arm (46) is connected by means of a cable line tramsmission rod means (45) with a transverse bolt (44) locking the height adjustment of the back support (2).

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Seats For Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)
US00107021A 1970-01-31 1971-01-18 Article of seating furniture Expired - Lifetime US3756654A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702004372 DE2004372C3 (de) 1970-01-31 Sitzmöbel

Publications (1)

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US3756654A true US3756654A (en) 1973-09-04

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US00107021A Expired - Lifetime US3756654A (en) 1970-01-31 1971-01-18 Article of seating furniture

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US (1) US3756654A (enrdf_load_stackoverflow)
AT (1) AT301790B (enrdf_load_stackoverflow)
CH (1) CH531337A (enrdf_load_stackoverflow)
FR (1) FR2075176A5 (enrdf_load_stackoverflow)
GB (1) GB1280962A (enrdf_load_stackoverflow)
SE (1) SE375687B (enrdf_load_stackoverflow)

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3837704A (en) * 1973-06-21 1974-09-24 F Bauer Seating furniture
US3861637A (en) * 1972-06-13 1975-01-21 Sable Freres Int Suspension device for a vehicle seat and especially a tractor seat
US3880465A (en) * 1972-05-17 1975-04-29 Stabilus Gmbh Seat of adjustable height having an adjustable back
US4072288A (en) * 1975-06-10 1978-02-07 Stabilus Gmbh Chair with pneumatically adjustable seat height and back support inclination
US4134617A (en) * 1976-06-25 1979-01-16 Kubota, Ltd. Driver's seat mounting structure for a tractor
US4328943A (en) * 1979-06-11 1982-05-11 Knoll International, Inc. Control mechanism for a chair or the like
US4561693A (en) * 1983-06-10 1985-12-31 Knoll International, Inc. Back support tilt and seat and back support height control mechanism for a chair or the like
US4733911A (en) * 1985-12-23 1988-03-29 Press S.P.A. Support column for a height-adjustable seat, and a seat comprising said column
US5127699A (en) * 1988-04-18 1992-07-07 Kubota Tekko Kabushiki Kaisha Device for reversibly supporting seat for vehicles
US5222783A (en) * 1991-12-02 1993-06-29 Lai Soon L Chair with its backrest adjustable in its angle
US5915788A (en) * 1996-04-22 1999-06-29 Steelcase Inc. Multi-function control for chair
US6022077A (en) * 1997-05-07 2000-02-08 Brunswick Corporation One-shot pedestal swivel seat lock/release mechanism
US6079786A (en) * 1997-05-07 2000-06-27 Brunswick Corporation One-shot pedestal swivel seat lock/release mechanism
US6209963B1 (en) 1999-05-06 2001-04-03 Miotto International, Inc. Variable configuration mounting arrangement for a chair back support member
US6224155B1 (en) 1999-01-12 2001-05-01 Steelcase Development Inc. Vertical height adjustment mechanism for chairs
EP1118293A3 (de) * 2000-01-15 2001-08-08 Frank Sitzmöbel GmbH Sitzmöbel
US6290296B1 (en) * 1999-07-01 2001-09-18 Northfield Metal Products Limited Anti-rattle pad
WO2002038008A1 (en) * 2000-11-08 2002-05-16 Samhall Ab Device at a chair mechanism for adjustment of inclination and height of seat using one single operating lever
US6419320B1 (en) * 2001-02-28 2002-07-16 Tung Yu Oa Co. Ltd. Base manipulation device for office chair
US6494124B1 (en) * 2001-07-13 2002-12-17 Carlos Castillo Self-contained hydraulic system
US20040000805A1 (en) * 2000-05-22 2004-01-01 Herman Miller, Inc. Office chair
US20040070168A1 (en) * 2002-10-08 2004-04-15 Tool Engineering & Manufacturing Company Adjustable air cushion bicycle seat
US20050099040A1 (en) * 2003-11-12 2005-05-12 Mills Robert J. Chair and desk combination
US7222920B1 (en) * 2005-06-17 2007-05-29 Washington James N Adjustable chair
US20080030057A1 (en) * 2006-08-04 2008-02-07 Sumei Zheng Office Chair with Strengthened Structure
US20090302657A1 (en) * 2008-06-06 2009-12-10 Knoll, Inc. Height Adjustment Mechanism for a Chair
JP2013528101A (ja) * 2010-06-11 2013-07-08 ヨンホ パク 椅子
US20140182488A1 (en) * 2012-12-27 2014-07-03 Syncmold Enterprise Corp. Lifting and rotating device
US9131775B1 (en) * 2012-12-05 2015-09-15 Joel H. Eisenberg Adjustable seating
US20150289654A1 (en) * 2014-04-10 2015-10-15 Chih-Cheng Su Multifunction control device
US20160235203A1 (en) * 2015-02-12 2016-08-18 Wilkhahn Wilkening + Hahne Gmbh + Co. Seating furniture product
EP4059380A4 (en) * 2020-04-09 2023-01-18 Hwang, Jongsung CHAIR TO REDUCE THE LOAD ON THE BUTTOCKS AND WAIST
US20230329440A1 (en) * 2020-10-23 2023-10-19 Lost Luggage ID Limited Multiple sitting position chair
US11864661B2 (en) 2021-05-05 2024-01-09 Steelcase Inc Body support assembly and methods for the use and assembly thereof

Families Citing this family (5)

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Publication number Priority date Publication date Assignee Title
IT1247369B (it) * 1991-03-01 1994-12-12 Loris Miotto Dispositivo meccanico, particolarmente per la movimentazione ed il bloccaggio selettivo di una seduta
GB2294872B (en) * 1994-11-10 1998-03-25 Chapman Ltd A W Chair tilt mechanism
DE20319458U1 (de) 2002-12-20 2004-04-22 Metalseat S.R.L., Galliera Veneta Bürosessel mit technischer Armlehne, der mit eingebauten Steuertasten zur Einstellung der Bewegung des Sitzes und der Rückenlehne versehen ist
DE20319455U1 (de) 2002-12-31 2004-04-22 Metalseat S.R.L., Galliera Veneta Vorrichtung zur Einstellung der Federdruckkraft in einem Gelenk für Sitze
ES1057119Y (es) 2004-03-24 2004-10-01 Metalseat Srl Estructura de sillon de oficina regulable con articulacion para el movimiento sincronico del asiento y del respaldo.

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US1111685A (en) * 1912-08-14 1914-09-22 W D Allison Adjustable chair.
US1909018A (en) * 1931-04-20 1933-05-16 Sikes Company Chair
US2661954A (en) * 1953-07-14 1953-12-08 Chicago Coin Machine Co Amusement and target practicing device
US2858876A (en) * 1956-03-23 1958-11-04 Jr Wesley E Woodson Universal communications operator's chair

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US826575A (en) * 1905-12-01 1906-07-24 Aeolian Co Piano-stool.
US1111685A (en) * 1912-08-14 1914-09-22 W D Allison Adjustable chair.
US1909018A (en) * 1931-04-20 1933-05-16 Sikes Company Chair
US2661954A (en) * 1953-07-14 1953-12-08 Chicago Coin Machine Co Amusement and target practicing device
US2858876A (en) * 1956-03-23 1958-11-04 Jr Wesley E Woodson Universal communications operator's chair

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Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880465A (en) * 1972-05-17 1975-04-29 Stabilus Gmbh Seat of adjustable height having an adjustable back
US3861637A (en) * 1972-06-13 1975-01-21 Sable Freres Int Suspension device for a vehicle seat and especially a tractor seat
US3837704A (en) * 1973-06-21 1974-09-24 F Bauer Seating furniture
US4072288A (en) * 1975-06-10 1978-02-07 Stabilus Gmbh Chair with pneumatically adjustable seat height and back support inclination
US4134617A (en) * 1976-06-25 1979-01-16 Kubota, Ltd. Driver's seat mounting structure for a tractor
US4328943A (en) * 1979-06-11 1982-05-11 Knoll International, Inc. Control mechanism for a chair or the like
US4561693A (en) * 1983-06-10 1985-12-31 Knoll International, Inc. Back support tilt and seat and back support height control mechanism for a chair or the like
US4733911A (en) * 1985-12-23 1988-03-29 Press S.P.A. Support column for a height-adjustable seat, and a seat comprising said column
US5127699A (en) * 1988-04-18 1992-07-07 Kubota Tekko Kabushiki Kaisha Device for reversibly supporting seat for vehicles
US5222783A (en) * 1991-12-02 1993-06-29 Lai Soon L Chair with its backrest adjustable in its angle
US5915788A (en) * 1996-04-22 1999-06-29 Steelcase Inc. Multi-function control for chair
US6003943A (en) * 1996-04-22 1999-12-21 Steelcase Development Inc. Multi-function control for chair
US6022077A (en) * 1997-05-07 2000-02-08 Brunswick Corporation One-shot pedestal swivel seat lock/release mechanism
US6079786A (en) * 1997-05-07 2000-06-27 Brunswick Corporation One-shot pedestal swivel seat lock/release mechanism
US6224155B1 (en) 1999-01-12 2001-05-01 Steelcase Development Inc. Vertical height adjustment mechanism for chairs
US6209963B1 (en) 1999-05-06 2001-04-03 Miotto International, Inc. Variable configuration mounting arrangement for a chair back support member
US6290296B1 (en) * 1999-07-01 2001-09-18 Northfield Metal Products Limited Anti-rattle pad
EP1118293A3 (de) * 2000-01-15 2001-08-08 Frank Sitzmöbel GmbH Sitzmöbel
US20040000805A1 (en) * 2000-05-22 2004-01-01 Herman Miller, Inc. Office chair
US6758523B2 (en) 2000-05-22 2004-07-06 Herman Miller, Inc. Office chair
WO2002038008A1 (en) * 2000-11-08 2002-05-16 Samhall Ab Device at a chair mechanism for adjustment of inclination and height of seat using one single operating lever
US6419320B1 (en) * 2001-02-28 2002-07-16 Tung Yu Oa Co. Ltd. Base manipulation device for office chair
US6494124B1 (en) * 2001-07-13 2002-12-17 Carlos Castillo Self-contained hydraulic system
US20040070168A1 (en) * 2002-10-08 2004-04-15 Tool Engineering & Manufacturing Company Adjustable air cushion bicycle seat
US7025367B2 (en) 2002-10-08 2006-04-11 Mckinnon Paul G Adjustable air cushion bicycle seat
US20050099040A1 (en) * 2003-11-12 2005-05-12 Mills Robert J. Chair and desk combination
US7222920B1 (en) * 2005-06-17 2007-05-29 Washington James N Adjustable chair
US20080030057A1 (en) * 2006-08-04 2008-02-07 Sumei Zheng Office Chair with Strengthened Structure
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Also Published As

Publication number Publication date
CH531337A (de) 1972-12-15
SE375687B (enrdf_load_stackoverflow) 1975-04-28
AT301790B (de) 1972-09-25
DE2004372B2 (de) 1976-04-22
DE2004372A1 (de) 1971-10-07
FR2075176A5 (enrdf_load_stackoverflow) 1971-10-08
GB1280962A (en) 1972-07-12

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