Backrest

Details Backrest Backrest

2005-12-06

2005-12-06

Cranmer, Laurie K. (Department: 3636)

Chairs and seats

Supplemental back

C297S230110, C297S230140, C297S452630

Reexamination Certificate

active

06971717

ABSTRACT:
An adjustable backrest has a series of adjustable straps extending across a front opening cavity of a backrest support. The straps are held in a locked, fitted position by a series of buckles at one side of the backrest which engage and lock the straps. Each strap is acted on by a bias arrangement and urges the straps to a drawn position across the front open cavity. This drawn position is an initial setup position that allows fitting of the backrest for a particular user.

REFERENCES:
patent: 2182253 (1939-12-01), Farrell
patent: 2557269 (1951-06-01), Fox
patent: 2582115 (1952-01-01), Goodeve
patent: 3679261 (1972-07-01), Slabakov
patent: 4556254 (1985-12-01), Roberts
patent: 5190347 (1993-03-01), Shiow-Lan
patent: 5403067 (1995-04-01), Rajaratnam

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