Chairs and seats – Collapsible chair; i.e. – relatively folding bottom – back,... – With means to hold chair in plural operative configurations
Reexamination Certificate
2007-03-27
2007-03-27
Barfield, Anthony D. (Department: 3636)
Chairs and seats
Collapsible chair; i.e., relatively folding bottom, back,...
With means to hold chair in plural operative configurations
C297S034000, C297S035000, C297S027000, C297S028000
Reexamination Certificate
active
11121989
ABSTRACT:
A chair includes a support assembly comprised of a first leg set having two space first bars and a second leg set having two space second bars located between and pivoted to the first bars. A backrest has is rotatable with respect to the support assembly to selectively change a tilting angle thereof. A tubular slide is movably fit over a free end of each first bar and is pivoted to the backrest. The slide has a fastening device to selectively secure the slide with respect to the first bar thereby releasably securing the backrest at a desired tilting angle. A wire and a spring are selectively connected between the slide and the first bar to prevent the slide from undesired separation from the first bar and to induce a returning force to move the backrest from a tilted position back to a regular position.
REFERENCES:
patent: 2512353 (1950-06-01), Magaldino et al.
patent: 4514009 (1985-04-01), Vanderminden et al.
patent: 4750784 (1988-06-01), Schwartz
patent: 4881776 (1989-11-01), Wang
patent: 5613737 (1997-03-01), Tseng
patent: 2003/0111873 (2003-06-01), Tseng
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