Chair, in particular office chair

Details Chair, in particular office chair Chair, in particular office chair

1994-07-21

1998-08-25

Nelson, Jr., Milton

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

2973006, A47C 300

Patent

active

057976538

ABSTRACT:
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 support member and bearing a back-rest. A seat supports itself on the two seat support members. A blocking lever of a blocking mechanism and having a stop face is articulated on the rear seat support member at a distance from the pivot axle. This stop face is moved by gravity into engagement with a blocking face stationary in relation to the front seat support member. For releasing this locking, the blocking lever is lifted by a blocking actuator arm.

REFERENCES:
patent: 3656593 (1972-04-01), Bauer
patent: 4200332 (1980-04-01), Branning
patent: 4641886 (1987-02-01), Dauphin

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