Backrest assembly

Details Backrest assembly Backrest assembly

2007-12-08

2009-10-20

McPartlin, Sarah B (Department: 3636)

Chairs and seats

Bottom or back

Framework

C297S452290

Reexamination Certificate

active

07604299

ABSTRACT:
A backrest assembly includes a rigid frame having an annular body. A connecting plate is interconnected between left and right sides of the annular body above a bottom side of the annular body. A plurality of supporting plates are interconnected between the connecting plate and the bottom side of the annular body. The annular body further includes a ridge extending radially outward from an outer peripheral face thereof and spaced from a front end face of the annular body, forming a ledge between the front end face and the ridge. A flexible board includes a flange formed on a rear side thereof. The flange is mounted around the ledge and abuts against the ridge. The board further includes a plurality of vents extending from a front side thereof through a rear side thereof. Fasteners are extended through engaging holes in the ridge into fixing holes of the board.

REFERENCES:
patent: 5338099 (1994-08-01), Ishi et al.
patent: 5951110 (1999-09-01), Conner et al.
patent: 6626497 (2003-09-01), Nagamitsu et al.
patent: 2008/0067852 (2008-03-01), Nordstrom et al.
patent: 2008/0157580 (2008-07-01), Lin
patent: 2008/0284229 (2008-11-01), Masunaga et al.

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