Backrest elevation adjustment assembly

Details Backrest elevation adjustment assembly Backrest elevation adjustment assembly

2007-10-02

2007-10-02

Edell, Joe (Department: 3636)

Chairs and seats

Movable back

C297S440210

Reexamination Certificate

active

11107797

ABSTRACT:
A backrest elevation adjustment assembly is provided, which is mainly composed of an L-shape member, a sliding member, and a multi-step positioning member. A seat supporting board is attached to the horizontal section of the L-shape member and the sliding member, which is attached to a backrest supporting board, is installed on the vertical section of the L-shape member, surrounding the multi-step positioning member embedded in the vertical section of the L-shape member. The sliding member could be slid up and down along the vertical section of the L-shape member and fixed at a number of pre-determined positions provided by the multi-step positioning member. With the elevation adjustment assembly, a chair's backrest could be adjusted to suit a sitter's specific posture so as to achieve comfortable seating.

REFERENCES:
patent: 4012158 (1977-03-01), Harper
patent: 4451084 (1984-05-01), Seeley
patent: 4616877 (1986-10-01), Slaats et al.
patent: 5685609 (1997-11-01), Miotto
patent: 5725278 (1998-03-01), Verbeek
patent: 5918938 (1999-07-01), Miotto
patent: 6264276 (2001-07-01), Chen

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