Class 297/300.6 - Including back limiting device

Subclass of Class 297 - Chairs and seats
Definition: Simultaneously adjusted back and seat further including
No. of patents: 25
Last issue date: 09/30/2008

Number	Title	Issue Date
7429081	Tilt control mechanism for a chair A tilt control mechanism for an office chair includes a spring assembly therein which controls the tilt tension on the back assembly. The tilt control mechanism includes a control plate mounted to the control shaft on which the uprights are mounted, wherein the cont...	09/30/2008
7325873	Seating unit A seating unit comprising a base configured to be positioned on a floor, a torsional energy unit connected to the base, a back connected to the torsional energy unit and a seat rotatably connected to the torsional energy unit. The torsional energy unit biases the ba...	02/05/2008
7249801	Cushioning device to cushion the backrest of a chair, an armchair, an office chair or similar Cushioning device to cushion a backrest with respect to the seat of a chair or suchlike. The device comprises a first supporting element connected to the backrest, a second supporting element connected to the seat and pinned to the first supporting element, and a sp...	07/31/2007
7234774	Seating unit with novel flexible supports A seating unit includes a seat, a back, a base, and a motion control having a plurality of flexible supports for operably supporting the seat and back on the base. The flexible supports are movable in a generally fore-to-aft direction but stiff in a generally vertic...	06/26/2007
6957864	Chair with a stopping device A chair includes an upper frame disposed above and pivoted to a lower frame. A stopping device includes a slide mounted slidably on the upper frame, and a stopping member. The slide is slidable between a first position, where the stopping member is offset from a rea...	10/25/2005
6880886	Combined tension and back stop function for seating unit A seating unit includes a base, a seat, a back, and a control operably supporting the seat and the back on the base for movement between upright and recline positions. The control includes a spring providing a biasing supporting force to the back during recline, and...	04/19/2005
6779847	Multi-task mid-pivot chair control mechanism A chair control mechanism for positioning between the seat and seat support of a chair. The chair control mechanism includes a base section for mounting to a seat support such as an adjustable height cylinder, and a seat mounting section pivotally interconnected wit...	08/24/2004
6598936	Multi-task mid-pivot chair control mechanism A chair control mechanism for positioning between the seat and seat support of a chair. The chair control mechanism includes a base section for mounting to a seat support such as an adjustable height cylinder, and a seat mounting section pivotably interco...	07/29/2003
6394549	Seating unit with reclineable back and forwardly movable seat A seating unit is provided having a base assembly with a particularly shaped housing and rigid upright side arms, a back frame pivoted to the base assembly for movement between upright and reclined positions, and a seat slidably supported on the base asse...	05/28/2002
6394548	Seating unit with novel seat construction A seating unit is provided having a base assembly, a back frame pivoted to the base assembly for movement between upright and reclined positions, and a seat slidably supported on the base assembly and pivoted to the back frame so that the seat moves forwa...	05/28/2002
6010189	Synchronized chair seat and backrest tilt control mechanism A chair control mechanism is provided for use on a chair having a separate seat 14 and backrest 16 that move with respect to a base 12 of the chair. The mechanism 22 includes a housing 26 supported on the base, and brackets 28, 30 secured to the seat and ...	01/04/2000
6003942	Mechanism for reclining chairs A reclining chair has a seat and a chair back both tiltably carried on a base. The chair back is provided with lever means for tilting the seat as the chair back is tilted. The lever means contacts the seat at a point which moves in response to the tiltin...	12/21/1999
6000756	Synchronized chair seat and backrest tilt control mechanism A chair control mechanism is provided for use on a chair having a separate seat 14 and backrest 16 that move with respect to a base 12 of the chair. The mechanism 22 includes a housing 26 supported on the base, and brackets 28, 30 secured to the seat and ...	12/14/1999
5797653	Chair, in particular office chair A chair, in particular an office chair, has a so-called synchronous mechanism in the form of a front seat support member stationary in relation to a chair column and a rear seat support member pivotable about a pivot axle in relation to the front seat sup...	08/25/1998
5584533	Chair with variable inclination of the seat and backrest The invention is directed to a seat arrangement with a seat pivotable around a horizontal pivot axis in its front region and with a variable inclination and with a backrest whose inclination can be changed compulsorily more than proportionally (super prop...	12/17/1996
5564783	Chair, in particular office chair A chair has a chair column on which a front seat support member is fixed. A rear seat support member provided with a back-rest support for a back-rest is joined to the front seat support member by a pivot axle. A seat is supported on the two seat support ...	10/15/1996
5108149	Adjustable seating Adjustable seating comprises a frame having a seat-supporting portion and a back-supporting portion, a seat bottom mounted on the seat-supporting portion for movement between rearward and forward positions and a seat back mounted on the back-supporting po...	04/28/1992
5040846	Rocker chair A theater chair of the rocking type having a standard on each side for supporting the chair. A contoured spring guide is attached to each standard and provides a support and deflection profile for leaf springs held in trolleys on each side of the chair. A...	08/20/1991
4943114	Chair backrest linkage mechanism A chair includes a compact backrest linkage mechanism for enabling the chair backrest and seat to tilt. The linkage mechanism comprises a pair of backrest levers pivotally connected to respective chair frame members near the chair back legs. A seat lever ...	07/24/1990
4711491	Swivel tilt mechanism for chair A chair includes a base, a member attached to the base and a seat support pivotable with respect to the member along a generally horizontal axis. The pivoting axis is disposed in parallel with and adjacent to a front edge of the seat. A backrest is hinged...	12/08/1987
4685733	Chair A chair having a seat member rotatably supported about a swivel point in the region of its front edge relative to a seat carrier. The chair also has a back member connected to at least one lever which is pivotally supported on the seat carrier. The lever ...	08/11/1987
4596421	Office chair An office chair includes a seat portion pivotable about one horizontal axis relative to a vertical stand and a back rest portion pivotable about another horizontal axis relative to the vertical stand of the chair, upon the application of the weight of the...	06/24/1986
4270797	Ergonomic chair The ergonomic chair comprises at the upper end of the chair column, a supporting arm on which the front end of the seat supporting frame is articulated for pivoting vertically. At the rear end of the seat supporting frame, a back rest is connected to the ...	06/02/1981
4232900	Chair control A chair control for adjustment of the rest position of a resiliently pivotable chair back, and of the degree of resiliency of the connection of the chair back to the chair frame. A spring brace is mounted on the frame beneath the seat and provides an aper...	11/11/1980
4170382	Posture chair A posture chair is provided with a spring-biased back in which the spring means is located underneath, adjacent to and substantially parallel with the bottom of the seat and in which the back is adjustable both vertically and rearwardly so that, when the ...	10/09/1979

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Class 297/300.6 - Including back limiting device