Tilt control mechanism for a chair

Details Tilt control mechanism for a chair Tilt control mechanism for a chair

2008-09-30

2008-09-30

White, Rodney B. (Department: 3636)

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

C297S300400, C297S300500, C297S300600

Reexamination Certificate

active

11598166

ABSTRACT:
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 control plate rotates in combination with the uprights. This control plate is located within the control body and cooperates with a front stop assembly and a back stop assembly to vary the limits of forward and rearward tilting of the seat and back assemblies. Also, the tilt control mechanism includes a pneumatic actuator assembly having fixed and rotatable cam blocks. The rotatable cam block rotates relative to the fixed block such that the rotatable cam block is driven downwardly to depress the control valve of the pneumatic cylinder and thereby vary the height of the seat assembly.

REFERENCES:
patent: 218972 (1879-08-01), Hollstegge et al.
patent: 2446127 (1948-07-01), Cramer
patent: 3434756 (1969-03-01), Walkinshaw
patent: 3659819 (1972-05-01), Wolters
patent: 3710645 (1973-01-01), Bennett
patent: 3880465 (1975-04-01), Scheben
patent: 4072288 (1978-02-01), Wirges et al.
patent: 4384741 (1983-05-01), Flum et al.
patent: 4669330 (1987-06-01), Stocker
patent: 4709963 (1987-12-01), Uecker et al.
patent: 4720142 (1988-01-01), Holdredge et al.
patent: 4779925 (1988-10-01), Heinzel
patent: 4805479 (1989-02-01), Brightwell
patent: 4840426 (1989-06-01), Vogtherr et al.
patent: 4854185 (1989-08-01), Lichtenberg et al.
patent: 4943115 (1990-07-01), Stucki
patent: 5004214 (1991-04-01), Marchina
patent: 5026117 (1991-06-01), Faiks et al.
patent: 5106157 (1992-04-01), Nagelkirk et al.
patent: 5192114 (1993-03-01), Hollington et al.
patent: 5259663 (1993-11-01), Ambasz
patent: 5289794 (1994-03-01), Jerro et al.
patent: 5348371 (1994-09-01), Miotto
patent: 5383377 (1995-01-01), Boike
patent: 5394770 (1995-03-01), Boike et al.
patent: 5417474 (1995-05-01), Golynsky
patent: 5477745 (1995-12-01), Boike et al.
patent: 5570612 (1996-11-01), Reasoner
patent: 5577807 (1996-11-01), Hodge et al.
patent: 5598743 (1997-02-01), Yasuda
patent: 5605074 (1997-02-01), Hall et al.
patent: 5655415 (1997-08-01), Nagle et al.
patent: 5673596 (1997-10-01), Lu
patent: 5709132 (1998-01-01), Irish et al.
patent: 5765914 (1998-06-01), Britain et al.
patent: 5771750 (1998-06-01), Bell et al.
patent: 5788328 (1998-08-01), Lance
patent: 5823063 (1998-10-01), Nagle et al.
patent: 5911791 (1999-06-01), Srinivas
patent: 5915788 (1999-06-01), Schneider
patent: 5921143 (1999-07-01), Castillo et al.
patent: 5934150 (1999-08-01), Srinivas et al.
patent: 5971481 (1999-10-01), Emmenegger et al.
patent: 5975634 (1999-11-01), Knoblock et al.
patent: 5975639 (1999-11-01), Wilson et al.
patent: 5979984 (1999-11-01), DeKraker et al.
patent: 6003943 (1999-12-01), Schneider
patent: 6033020 (2000-03-01), Ito
patent: 6086153 (2000-07-01), Heidmann et al.
patent: 6116688 (2000-09-01), Wilkerson et al.
patent: 6139103 (2000-10-01), Hybarger et al.
patent: 6213552 (2001-04-01), Miotto
patent: 6216555 (2001-04-01), Malone
patent: 6247380 (2001-06-01), Cebollero
patent: 6263756 (2001-07-01), Gabas Cebollero et al.
patent: 6273506 (2001-08-01), Niergarth et al.
patent: 6361110 (2002-03-01), Roslund, Jr. et al.
patent: 6378943 (2002-04-01), Beggs et al.
patent: 6394548 (2002-05-01), Battey et al.
patent: 6435056 (2002-08-01), Meyer
patent: 6561057 (2003-05-01), Cebollero
patent: 6588843 (2003-07-01), Ebenstein
patent: 6880886 (2005-04-01), Bodnar et al.
patent: 6932430 (2005-08-01), Bedford et al.
patent: 7147285 (2006-12-01), Lin
patent: 2001/0000939 (2001-05-01), Roslund et al.
patent: 2002/0043845 (2002-04-01), Vanderiet et al.
patent: 2004/0155502 (2004-08-01), Johnson et al.
patent: 2004/0183350 (2004-09-01), Schmitz et al.
patent: WO 96/39897 (1996-12-01), None
International Search Report dated Jul. 21, 2006.

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