Permanent contact mechanism

Details Permanent contact mechanism Permanent contact mechanism

2011-01-11

2011-01-11

McPartlin, Sarah B (Department: 3636)

Chairs and seats

Back movement resiliently opposed in operating position

Adjustable resistance

C297S303100

Reexamination Certificate

active

07866750

ABSTRACT:
A permanent-contact mechanism for an office chair or the like is formed as a comparatively flat permanent-contact mechanism with a seat frame, which can be positioned on a chair upright, with a backrest support, which is arranged on the seat frame such that it can be pivoted about a transverse axis, and with at least one spring-activated or inherently resilient lever element, which interacts with the backrest support such that the backrest support is always pivoted counter to a spring force. The position of the point of rotation of the lever element differs from the position of the transverse axis.

REFERENCES:
patent: 3072436 (1963-01-01), Moore
patent: 3339973 (1967-09-01), Doerner
patent: 5348372 (1994-09-01), Takamatsu et al.
patent: 6015187 (2000-01-01), Roslund et al.
patent: 6582019 (2003-06-01), Zwick et al.

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