EP0309804A2 - Chaise de bureau - Google Patents

Chaise de bureau Download PDF

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Publication number
EP0309804A2
EP0309804A2 EP88114926A EP88114926A EP0309804A2 EP 0309804 A2 EP0309804 A2 EP 0309804A2 EP 88114926 A EP88114926 A EP 88114926A EP 88114926 A EP88114926 A EP 88114926A EP 0309804 A2 EP0309804 A2 EP 0309804A2
Authority
EP
European Patent Office
Prior art keywords
arm
seat
sliding
backrest
support arm
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.)
Granted
Application number
EP88114926A
Other languages
German (de)
English (en)
Other versions
EP0309804B1 (fr
EP0309804A3 (en
Inventor
Burkhard Vogtherr
Manfred Elzenbeck
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.)
Davis Furniture Industries Inc
Original Assignee
Davis Furniture Industries Inc
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 Davis Furniture Industries Inc filed Critical Davis Furniture Industries Inc
Priority to AT88114926T priority Critical patent/ATE83624T1/de
Priority to EP91114245A priority patent/EP0460717B1/fr
Publication of EP0309804A2 publication Critical patent/EP0309804A2/fr
Publication of EP0309804A3 publication Critical patent/EP0309804A3/de
Application granted granted Critical
Publication of EP0309804B1 publication Critical patent/EP0309804B1/fr
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
    • A47C1/03205—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination
    • A47C1/0325—Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest having adjustable and lockable inclination by means of clamps or friction locking members
    • 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

Definitions

  • the present invention relates to an office chair, in particular an office chair which is pivotable about a vertical column and in which the backrest is articulated with respect to the seat surface, so that it is optionally tiltable with respect to the seat surface, which simultaneously moves forward while the Backrest tilts backwards.
  • the seat can also be raised or lowered using a gas cylinder.
  • Some arrangements attempt to achieve a higher level of comfort by connecting the seat and the back so that the seat slides forward in a prescribed path depending on the tilt of the back. This is also called “synchronous" seat and backrest adjustment.
  • the goal is to automatically adjust the position of the seat and its inclination while the backrest is in different angles is tilted. As soon as the desired angle of the backrest is reached, the seat and the backrest are locked in their position.
  • the aim of the designers is to adjust the seat depending on the tilt of the backrest so that maximum comfort is achieved.
  • the invention incorporates the basic concept of "synchronous" seating, as described in the German patent, in which the pivot point between the backrest and the seat surface is forced into a downward movement while the backrest is tipped back.
  • the invention includes changes and additional features that work together to overcome the significant manufacturing problems created by the previous design.
  • the support system of the invention uses a unique support frame that has a transverse first support arm that is aligned and positioned over the vertical support column, which in turn adjustably connects the chair to the base through a gas cylinder.
  • Said transverse support arm primarily supports the assembly consisting of the seat surface and backrest along a transverse support axis which runs essentially below the center of gravity of the occupied chair. This creates several advantages.
  • the support frame has a front cross arm that holds a slide / lock member in place to effectively bias a pair of laterally spaced inwardly slotted housings in which the slide / lock member moves.
  • the sliding / locking element is rotatable between a first sliding position and a second locking position with the opposite slots.
  • the sliding / locking element has a non-circular cross section. In the first or sliding position, the larger dimension of the sliding / locking element is oriented in the direction of movement, while in the second or locking position the larger dimension of the sliding / locking element is moved in a frictional action between the walls of the housing, which the slotted opening forms.
  • the support assembly of the invention further includes a pair of laterally ab stood side arms arranged to each other, which are attached at their lower ends to the opposite ends of the above transverse support arm.
  • the side arms extend upward from the transverse support arm, then end backwards at a hinge-like and supportive point that is substantially adjacent to the lumbar region of the backrest.
  • the backrest is rotatably connected to the ends of the side arms at the pivot and support point mentioned above.
  • the backrest is curved from the top down and from side to side for purposes that will be described later.
  • the side arms can take the form of one of two versions.
  • the side arms are full length, in which case each side arm extends upwards by angling forward from the cross arm, then backwards to the end point.
  • the second version which is actually a shortened armrest for secretaries and typists, the side arms only extend vertically and then backwards for a short distance.
  • a separable mounting receptacle is located within the central portion of the transverse support arm of the support system to receive the upper end of the gas cylinder.
  • the mounting receptacle serves to hold the actuating means of the gas cylinder and the locking means in place and at the same time to create a seat for the rear end of the spring tongue. Because of this separate mounting receptacle, the support frame can be manufactured more easily and cheaply because a variety of sizes and shapes of support frames can be made, all using the same type of month mount.
  • Another unique feature of the invention resides in a removable decorative foot cap that is snap-fitted to the outermost of each leg of the support base.
  • the decorative foot cap makes it easy to change colors, shapes and to replace unsightly or worn foot caps.
  • Another object of the invention is to provide a support device of the type described in which the moment lever between the center of gravity of the occupied seat and the main support element is reduced.
  • Another object of the invention is to provide an effective and simple locking system for use in connection with the described support system.
  • Another object of the invention is to provide a support or suspension system for a chair of the type described above and a locking system, both of which are matched so that a very light locking pressure (on the order of 200 Newtons) is sufficient to the To keep the seat in a fixed position.
  • Another object of the invention is to provide an office chair of the type described, in which the backrest is curved, from the top edge downwards and from one side to the other, in order to increase the horizontal offset between the articulated connection and the axis which swivels the backrest.
  • Another object of the invention is to provide a support system of the type described in which the transverse support member is extendable to be used in wider seating configurations.
  • an object of the invention is to provide an office chair of the type described which has replaceable, decorative foot caps on the legs of its base.
  • FIG. 1 an office chair is shown, which essentially has a seat assembly 10, which has a curved backrest 12 and a seat recess 14, which are hinged together and are adjacent to the lower edge of the backrest 12 and the rear edge of the seat recess 14.
  • a base assembly is formed by a plurality of legs 16 that extend radially outward from a central portion and end in support rollers 18.
  • An adjustable vertical column 17 extends upwards from the base and has a support frame 20 arranged thereon, which is located below the seat 14.
  • a pair of side arms 22 are attached to the support frame 20 and pivotally support the seat assembly 10.
  • the functional mode of operation of the chair is explained with reference to FIG. 2.
  • the backrest 12 and the seat pan 14 are supported on the base assembly by a support frame or system 20.
  • the backrest 12 comprises a lower lumbar region, and the backrest 12 and the seat recess 14 are connected to one another in an articulated manner in the hinge point 13.
  • the backrest 12 and the seat pan 14 are suspended above the support frame 20 on the side arms 22, which are attached at their lower ends to a transverse support arm 30, which forms the rear section of the support frame 20.
  • the arms 22 pivotally support the backrest 12 at point 28.
  • the backrest seat component could normally swing or rotate about the point 28, but this is prevented by a front connecting element 24, which slidably connects the front section of the support frame 20 to the lower front section of the seat pan 14 and locks them against one another.
  • the seat is freely tiltable depending on the pressure applied against the upper portion of the backrest 12.
  • the connecting element 24 is locked, such a tilting movement is prevented.
  • a vertical support column 17 extends upward from the base and the support frame 20 is attached at its upper end.
  • the support column 17 preferably includes an adjustable gas cylinder.
  • the bending back of the arms 22 creates a horizontal support axis 26 which is horizontally not far from the center of gravity of the occupied chair and which is slightly in front of the horizontal axis which passes through the hinge point 28.
  • the arrangement of the horizontal support axis on the back of the support frame 20 substantially below the hinge axis 28 produces various desired results.
  • the torque is reduced at the point where the side arms 22 are connected to the support frame 20.
  • the backrest 12 is shown as a top-down member, with the most forward portion of the bend located at hinge point 28 and adjacent to the user's lumbar region.
  • the backrest 12, as shown in Fig. 5, is also curved from one side to the other. This leads to a maximum offset between the hinge 13, which connects the backrest 12 and the seat recess 14 in an articulated manner, and the bearing point 28, where the backrest is connected to the two side arms 22.
  • the maximum offset of the hinge 13 causes a deeper vertical offset of the seat recess 14 when the seat is tilted backwards (FIG. 2). This relative movement between the seat recess 14 and the backrest 12 brings about the desired comfort.
  • the base includes a plurality of legs 16 that extend radially from a center.
  • a common roller 18 supports and is attached to the free end of each leg 16.
  • the base is a comparatively conventional base for an office chair with the exception of replaceable foot caps 19 which will be described in more detail later.
  • the base also carries a vertical support column 17, wel vertical height adjustment of the chair.
  • a commercially available adjustable gas cylinder may be provided for this purpose.
  • a support frame 20 is provided, which is best seen in FIGS. 3 to 5.
  • the support frame 20 is arranged on the upper end of the vertical support column 17 and is essentially formed by a transverse support arm 30, a shorter cross arm 32 and a main housing 34 which connects the transverse support arm 30 and the cross arm 32.
  • the transverse support arm 30 is arranged at the rear end of the support frame 20, directly above the vertical support column 17, while the shorter cross arm 32 extends transversely below the front section of the seat recess 14. Both the support arm 30 and the cross arm 32 are hollow to accommodate various control components.
  • the transverse support arm 30 forms the only support for the seat assembly 10, which is connected to it by the arms 22. To this end, the transverse support arm 30, when fully assembled, is of greater length than the width of the seat pan 14 so that it projects on either side thereof to receive the side arms 22.
  • Support arm 30 is hollow and includes a generally tubular portion 36 that extends in both directions from the central longitudinal axis of the frame.
  • the hollow inner section of the tubular Section 36 preferably has a hexagonal cross-section and is tapered, as seen in FIG. 5, to accommodate an extension / connecting member 38 for support arm extension in each end of tubular section 36.
  • the extension / connector members 38 are also hollow and include a central portion 40 and a tapered hollow plug that extends axially along the axis of the support arm 30 in either direction.
  • An inner plug portion 42 is shaped to fit within, be received by, and cooperate with the hollow conical interior of the tubular portion 36.
  • the outwardly facing plug portion 44 receives a cylindrical end 46 of the side arm 22.
  • the central portion 40 may be of different lengths so as to elongate the transverse support arm 30 when used in chairs that use seat shells 14 of different widths. Therefore, if the central sections 40 are formed two or four centimeters further, the transverse support arm 30 can accommodate a seat that is four or eight centimeters wider.
  • a cover ring 47 is arranged on the plug section 44 between the central section 40 and the cylindrical end 46 of the side arm 22.
  • a first lever handle 48 extends through the cover ring 47 and a corresponding opening 45 in the plug 44 and takes one end a tubular actuating rod 50.
  • a central bore in the central section 40 of the extension / connecting element 38 supports the actuating rod 50 centrally in the support arm 30.
  • the tubular actuating rod 50 connects the handle 48 to an actuating connector 52 which is arranged in the vertical support 17 directly above the piston of the gas spring .
  • the actuator port 52 In the normal retracted position, the actuator port 52 is out of engagement with the gas spring piston; however, when the handle 48 actuating the socket is pivoted into an actuating position by the user of the chair, the socket 52 is pressed down into an effective actuation of the piston of the gas cylinder so that the height of the chair can be adjusted.
  • the actuating rod 50 is also hollow to receive a connecting rod 55 which extends completely through the transverse support arm 30 in order to hold all of the aforementioned assembled components in position with respect to one another.
  • a second lever handle 54 is disposed through a similar cover ring 53 with a second tubular actuation rod 56 on the opposite side of the support arm 30 to actuate the locking mechanism as described later.
  • the lever handle 54 is also pivotally attached to the transverse support arm 30.
  • the tubular rod 56 connects the lever handle 54 to the rear crank 58 of a connection that passes through the main housing 34.
  • a link arm 60 connects the rear crank 58 to a front crank 62.
  • the front crank 62 is operative sam with an actuating rod 64 of a sliding / locking element 66, which will be described below, connected.
  • a spring 70 is also received in the main housing 34 of the support frame 20, but the connecting arm 60 is arranged so close to the wall of the housing 34 that there can be no mutual interference between the connecting arm 60 and the spring 70.
  • the spring 70 connects the fixed support frame 20 to the slidable seat 14 to compensate for the force that normally tends to hold the backrest 12 in the upright position. This corresponds to the prior art, and therefore the function of the spring 70 is not explained in detail.
  • connection which slidably connects the cross arm 32 of the support frame 20 to the front portion of the seat pan and locks them against each other if necessary.
  • a pair of spaced apart slotted housings 72 and 74 are attached to the underside of the seat 14.
  • Each housing 72, 74 includes an inwardly elongated slot or track 76 which is adjacent to the outermost, and thus the slide / latch member 66, the cross arm 32 is opposite.
  • the sliding / locking element 66 is shown hexagonally shaped.
  • the diameter between the surfaces of the hexagonally shaped element is substantially equal to or slightly less than the width of the slot or track 76. Therefore, when the hexagonally shaped sliding / locking element 66 is aligned in a first sliding position in which its surfaces are parallel to run along the walls of the track 76, the sliding / locking element allows a relative movement between the housing 72, 74 and the cross arm 32.
  • the effective diameter of the slide / latch member 66 increases and is larger than the space between the walls forming the track 76. In this position, the larger diameter then effectively and frictionally abuts the side walls of slot 76 to lock the slide / latch member 66 in place to prevent the seat 14 from sliding and the backrest 12 from tilting in either direction.
  • the frictional force required to prevent movement of the chair in both directions is relatively small (on the order of 200 Newtons compared to 800 Newtons for other types of chairs).
  • the slide / latch element 66 is shown as a hexagonal element, any non-circular design will accomplish the desired one Effect as long as the element has a larger effective diameter when rotated to a first position than corresponds to the second effective diameter in a second position.
  • the sliding / locking element 66 could therefore theoretically be formed octagonally, at right angles or elliptically in cross section.
  • the hexagonal shape appears to be a good compromise, since it causes a larger effective diameter difference than would be the case with a larger number of corners, and it only requires a 30 ° movement of the lever handle 54 to effect such a locking movement .
  • a mounting receptacle 80 is disposed in a recess 82 of the support frame 20 at the intersection between the transverse support arm 30 and the main housing 34.
  • the recess 82 is essentially a cup-like seat on the underside of the frame 20.
  • the mounting receptacle 80 includes three circumferentially spaced openings or passages 84 which receive fasteners 86 extending therethrough around the mounting receptacle 80 within the seat 82 to secure.
  • the mounting receptacle 80 includes a relatively large central opening 88 through which the upper end of the gas cylinder C extends and in which it is received.
  • the Piston p of the gas cylinder extends through and over the surface of the mounting receptacle 80, so that it is easily accessible and operable through the actuating connection 52.
  • the mounting receptacle 80 further includes a recess 90 in the upper portion of its side wall, which extends along the axis of the main housing.
  • this recess 90 is to allow an end finger of the spring 70 to extend through this recess 90 and to be secured behind a downwardly extending flange 35 in the main housing 34.
  • the side of the mounting receptacle 80 which is adjacent to the connection of 58 and 60 is cut free to form a seat 92 which provides clearance for the operation of the rear crank 58. Since the tubular actuating rods 50, 56 act on the outer surface of the mounting receptacle 80, an inward movement is impossible.
  • the mounting receptacle 80 Since the mounting receptacle 80 is separated from the frame 20, various desired results are achieved. First of all, all frames are easier to adapt to gas cylinders. Second, the mounting bracket includes 80 different, rather complicated passages, seats and recesses. Therefore, it is much easier to manufacture a smaller and separate part such as the mounting receptacle 80 than a part, rather than a casting, for the entire support frame 20.
  • the mounting receptacle also creates that it receives and connects the frame and the gas cylinder , a hold for the rear spring tongue, and holds the actuation for the gas spring as well as the actuation for the rear crank 58 in place.
  • a decorative foot cap 100 is removably attached to the end of each leg 16 of the base.
  • the foot cap 100 is made of molded flexible polymeric material having a body portion 102 and a longitudinally extending finger 104 that extends a short distance along the surface of the leg 16.
  • the finger 104 is received by a seat 106 on the leg 16.
  • the underside of the toe cap 100 includes an opening 108 through which a mounting bracket of the roller 18 extends to hold the toe cap 100 in place.
  • the foot cap 100 is simply placed in place by bending it and sliding it onto the exterior of the foot 16. While roller 18 is removed, finger 104 is moved into place within seat 106. When the roller 18 is inserted in place through the opening 108, the foot cap 100 is securely secured.
  • the foot cap 100 can be removed by the opposite procedure.
  • the decorative foot cap 100 creates a protective function for the end of the legs 16, which are quickly scratched or unsightly in conventional furniture designs. Since the attachment and removal of the foot cap 100 is easy, the chair can appear refurbished simply by replacing the foot caps 100. In addition, the appearance of the chair can be changed by replacing the foot caps 100 with foot caps of other colors or shapes.
  • the side arms 22 may have a full length in one embodiment. In this case, they extend forward and upward from their lower point and then backward to the attachment point 28 on the backrest 12. In another embodiment for secretaries or similar purposes, it may be desirable to have a shorter arm formation. In these cases, the arm extends vertically upward, then backwards for a shorter distance to the attachment point 28 on the backrest 12.
  • the second horizontal axis through the lumbar region lies behind the third axis, which coincides with the transverse support arm 30.
  • the first transverse or horizontal axis is movable depending on the tilting of the backrest 12 between a first upright position in which the first horizontal axis is arranged substantially behind the second horizontal axis described and a second tilted position in which the first horizontal axis is closer to or is even arranged substantially below the second horizontal axis.
  • the chair should be designed so that the first horizontal axis cannot be moved to a position that is more forward than below the second horizontal axis. In that case, the seat pan 14 would then be raised in response to further tilting of the backrest 12, which would interfere with one of the main objectives of the present invention.
  • the seat pan 14 lowers slightly when the backrest 12 is tilted backwards. While the relationships between the first and second horizontal axes are described in the above-mentioned German patent, the arrangement of the third horizontal axis is reserved for the present invention.

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)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Finger-Pressure Massage (AREA)
  • Plural Heterocyclic Compounds (AREA)
EP88114926A 1987-09-30 1988-09-13 Chaise de bureau Expired - Lifetime EP0309804B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT88114926T ATE83624T1 (de) 1987-09-30 1988-09-13 Buerostuhl.
EP91114245A EP0460717B1 (fr) 1987-09-30 1988-09-13 Dispositif de verrouillage pour une chaise de bureau

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/102,724 US4840426A (en) 1987-09-30 1987-09-30 Office chair
US102724 1987-09-30

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP91114245.3 Division-Into 1988-09-13

Publications (3)

Publication Number Publication Date
EP0309804A2 true EP0309804A2 (fr) 1989-04-05
EP0309804A3 EP0309804A3 (en) 1989-09-20
EP0309804B1 EP0309804B1 (fr) 1992-12-23

Family

ID=22291364

Family Applications (2)

Application Number Title Priority Date Filing Date
EP88114926A Expired - Lifetime EP0309804B1 (fr) 1987-09-30 1988-09-13 Chaise de bureau
EP91114245A Expired - Lifetime EP0460717B1 (fr) 1987-09-30 1988-09-13 Dispositif de verrouillage pour une chaise de bureau

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP91114245A Expired - Lifetime EP0460717B1 (fr) 1987-09-30 1988-09-13 Dispositif de verrouillage pour une chaise de bureau

Country Status (10)

Country Link
US (1) US4840426A (fr)
EP (2) EP0309804B1 (fr)
AT (2) ATE83624T1 (fr)
AU (1) AU598180B2 (fr)
DE (2) DE3852505D1 (fr)
DK (1) DK499988A (fr)
ES (2) ES2067103T3 (fr)
FI (1) FI884467A (fr)
GR (1) GR3007435T3 (fr)
NO (1) NO884328L (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418731A1 (fr) * 1989-09-16 1991-03-27 Rolf Völkle Chaise
WO1991009554A1 (fr) * 1989-12-29 1991-07-11 Wilkhahn Wilkening + Hahne Gmbh + Co. Dispositif de reglage synchrone pour chaises de bureau ou analogues
US5209548A (en) * 1990-11-14 1993-05-11 Giroflex Entwicklungs Ag Chair, in particular office chair
WO2004073457A1 (fr) * 2003-02-18 2004-09-02 Dozsa-Farkas Andras Chaise, en particulier chaise de bureau ou de travail
WO2008111848A1 (fr) * 2007-03-13 2008-09-18 Sapdesign As Dispositif pour fauteuil à inclinaison siège-dossier ajustable
US9844267B2 (en) 2012-09-20 2017-12-19 Steelcase Inc. Chair back mechanism and control assembly
WO2018160647A1 (fr) * 2017-03-02 2018-09-07 Knoll, Inc. Mécanisme de bascule de dos de chaise
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering

Families Citing this family (65)

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Publication number Priority date Publication date Assignee Title
AU617070B2 (en) * 1988-04-25 1991-11-14 Charles O. Perry Reclining chair
EP0539377B1 (fr) * 1990-04-10 1998-06-17 Charles O. Perry Chaises souples empilables en nombre
US5318346A (en) * 1991-05-30 1994-06-07 Steelcase Inc. Chair with zero front rise control
US5203853A (en) * 1991-09-18 1993-04-20 Herman Miller, Inc. Locking chair tilt mechanism with torsion bar
US5320410A (en) * 1992-01-14 1994-06-14 Steelcase Inc. Chair control
US5308142A (en) * 1992-01-23 1994-05-03 Steelcase, Inc. Chair with arm mounted motion control
DE4209049C2 (de) * 1992-03-20 1995-05-11 Kloeber Gmbh & Co Arbeitssessel mit flachbauender Synchronmechanik
DE4209050C2 (de) * 1992-03-20 1995-06-14 Kloeber Gmbh & Co Arbeitssessel mit Synchron-Sitzmechanik und dynamischer Verschwenkung
DE4303324A1 (de) * 1993-02-05 1994-08-11 Bock Martin Kunststoff Sitzmöbel, insbesondere Bürostuhl
US5630643A (en) * 1993-06-01 1997-05-20 Steelcase Inc Upholstered chair with two-piece shell
US5577807A (en) 1994-06-09 1996-11-26 Steelcase Inc. Adjustable chair actuator
USD383019S (en) * 1995-01-17 1997-09-02 Steelcase Inc. Chair actuator
US5725276A (en) * 1995-06-07 1998-03-10 Ginat; Jonathan Tilt back chair and control
US5975634A (en) 1997-10-24 1999-11-02 Steelcase Development Inc. Chair including novel back construction
ITTO980034A1 (it) * 1998-01-16 1999-07-16 Miotto Int Comp Dispositivo meccanico per il controllo della movimentazione sincrona d i sedile e schienale di una seduta.
US6250715B1 (en) * 1998-01-21 2001-06-26 Herman Miller, Inc. Chair
US6007150A (en) 1998-03-08 1999-12-28 Milsco Manufacturing Company Motorcycle seat with adjustable backrest
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DE3930983A1 (de) * 1989-09-16 1991-03-28 Rolf Voelkle Sitzmoebel mit neigungsverstellbarer sitzflaeche
US5150948A (en) * 1989-09-16 1992-09-29 Voelkle Rolf Reclining chair
EP0418731A1 (fr) * 1989-09-16 1991-03-27 Rolf Völkle Chaise
WO1991009554A1 (fr) * 1989-12-29 1991-07-11 Wilkhahn Wilkening + Hahne Gmbh + Co. Dispositif de reglage synchrone pour chaises de bureau ou analogues
US5251958A (en) * 1989-12-29 1993-10-12 Wilkhahn Wilkening & Hahne Gmbh & Co. Synchronous adjusting device for office chairs or the like
EP0578276A1 (fr) * 1989-12-29 1994-01-12 Wilkhahn Wilkening + Hahne GmbH + Co. Dispositif de réglage d'une chaise de bureau ou similaire
US5366274A (en) * 1989-12-29 1994-11-22 Wilkhahn Wilkening + Hahne Gmbh + Co. Synchronous adjusting device for office chairs or the like
AU662661B2 (en) * 1989-12-29 1995-09-07 Wilkhahn Wilkening & Hahne Gmbh & Co. Synchronous adjusting device for office chairs or the like
US5209548A (en) * 1990-11-14 1993-05-11 Giroflex Entwicklungs Ag Chair, in particular office chair
US7484803B2 (en) 2003-02-18 2009-02-03 Omp S.R.L Chair, especially and office or work chair
WO2004073457A1 (fr) * 2003-02-18 2004-09-02 Dozsa-Farkas Andras Chaise, en particulier chaise de bureau ou de travail
CN100444764C (zh) * 2003-02-18 2008-12-24 Omp有限公司 座椅
WO2008111848A1 (fr) * 2007-03-13 2008-09-18 Sapdesign As Dispositif pour fauteuil à inclinaison siège-dossier ajustable
US8434822B2 (en) 2007-03-13 2013-05-07 Sapdesign As Furniture device with adjustable angle between the seat and the back of the piece of furniture
US9844267B2 (en) 2012-09-20 2017-12-19 Steelcase Inc. Chair back mechanism and control assembly
US9861201B2 (en) 2012-09-20 2018-01-09 Steelcase, Inc. Chair assembly
US9918552B2 (en) 2012-09-20 2018-03-20 Steelcase Inc. Control assembly for chair
US10206507B2 (en) 2012-09-20 2019-02-19 Steelcase Inc. Control assembly for chair
US11304528B2 (en) 2012-09-20 2022-04-19 Steelcase Inc. Chair assembly with upholstery covering
WO2018160647A1 (fr) * 2017-03-02 2018-09-07 Knoll, Inc. Mécanisme de bascule de dos de chaise

Also Published As

Publication number Publication date
EP0309804B1 (fr) 1992-12-23
ES2067103T3 (es) 1995-03-16
EP0460717A2 (fr) 1991-12-11
DE3852505D1 (de) 1995-01-26
US4840426A (en) 1989-06-20
DK499988A (da) 1989-03-31
ATE115375T1 (de) 1994-12-15
AU2295588A (en) 1989-04-06
ES2037782T3 (es) 1993-07-01
FI884467A (fi) 1989-03-31
GR3007435T3 (fr) 1993-07-30
EP0460717B1 (fr) 1994-12-14
ATE83624T1 (de) 1993-01-15
DE3876922D1 (de) 1993-02-04
EP0309804A3 (en) 1989-09-20
DK499988D0 (da) 1988-09-08
AU598180B2 (en) 1990-06-14
NO884328D0 (no) 1988-09-29
FI884467A0 (fi) 1988-09-29
EP0460717A3 (en) 1992-05-20
NO884328L (no) 1989-03-31

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