Chair with synchronized rocking seat and backrest

Details Chair with synchronized rocking seat and backrest Chair with synchronized rocking seat and backrest

2001-06-07

2003-01-28

Crown, Peter R. (Department: 3636)

Chairs and seats

Back movement resiliently opposed in operating position

Back and seat adjust simultaneously

C297S302300, C297S320000

Reexamination Certificate

active

06511128

ABSTRACT:

This invention relates to a chair with synchronised rocking seat and backrest. More precisely the invention relates to a chair of the type comprising:
a base support,
a backrest supporting structure connected to the base support so to rock on a transversal axis, and
a seat supporting structure rocking on the base support in a synchronised way with respect to the rocking movement of the backrest supporting structure.
In chairs of this sort, the mechanism for obtaining synchronised rocking of the seat and the backrest is usually complex, large and formed by a high number of components.
The purpose of this invention is to provide a chair of the type specified above, which is simple, comfortable and which cost is low.
According to this invention, this purpose is attained by a chair, having the features forming the subject of the claims.


REFERENCES:
patent: 1491918 (1924-04-01), Nolan
patent: RE20372 (1937-05-01), Lorenz
patent: 2529726 (1950-11-01), Dorton
patent: 4575150 (1986-03-01), Smith
patent: 4786106 (1988-11-01), Bottemiller
patent: 5664835 (1997-09-01), Desanta
patent: 5683139 (1997-11-01), Golynsky et al.
patent: 5775774 (1998-07-01), Okano
patent: 5810440 (1998-09-01), Unwalla
patent: 6000755 (1999-12-01), Uhlenbrock
patent: 264587 (1929-05-01), None

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