Chair

Details Chair Chair

2005-04-05

2005-04-05

Cranmer, Laurie K. (Department: 3636)

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

C297S300100, C297S300400, C297S300800, C297S301400, C297S302100, C297S300300, C297S303100

Reexamination Certificate

active

06874853

ABSTRACT:
This object is attained in a chair comprising a pedestal; a seat support supported thereon via a chair column, said seat support comprising a front and a rear seat support element being connected with one another via a pivot axis extending substantially horizontally; a seat supported on said seat support elements; a backrest secured on said rear seat support element; a longitudinally adjustable energy storing means for mutually adjusting said backrest and said seat, said energy storing means being joined with said seat support elements at a distance from their pivot axis; a spring abutment being arranged pivotably around said pivot axis for adjustably dampening a pivoting movement of said seat support elements relative to one another; an adjusting element extending substantially tangentially relative to said pivot axis and being pivotable around an adjusting element pivot axis for modifying the bias between said spring abutment and one seat support element; and an actuating twist handle connected with said adjusting element and pivotable around a twist handle pivot axis for manually turning said adjusting element. Said actuating twist handle is connected via a coupling element with said adjusting element for transmitting a turning movement. Said adjusting element pivot axis and said twist handle pivot axis are not flush with one another.

REFERENCES:
patent: 4641886 (1987-02-01), Dauphin
patent: 5447357 (1995-09-01), Dauphin
patent: 5964503 (1999-10-01), Inoue
patent: 6572191 (2003-06-01), Wild
patent: 6588843 (2003-07-01), Ebenstein
patent: 42 09 049 (1993-09-01), None
patent: 43 24 545 (1995-01-01), None
patent: 0 584 620 (1994-03-01), None
Anzeige der Ergenbnisse aus WPINDEX Datenbank, “Work Chair with Synchronous Adjuster for Backrest and Seat”, Kloeber GmbH & Co., DE4209049 (Abstract).
Anzeige der Ergenbnisse aus WPINDEX Datenbank, “Office Chair with Chair Column Protruding from Base,” Trenoffice Bueromoebe GmbH & Co. KG, DE4324545 (Abstract).

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