Adjustable quick release seatback system particularly for...

Chairs and seats – Having detachably interfitting parts or components; i.e.,... – Interfitted back and back frame

Reexamination Certificate

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C297S378130, C297S354120

Reexamination Certificate

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07066549

ABSTRACT:
A wheelchair seatback assembly suitable for detachable mounting to the back-supporting posts of a wheelchair. The back assembly includes a relatively rigid shell member carrying post-engaging pins and a plurality of mounting clips attachable to wheelchair posts. At least selected ones of the mounting clips are further formed to releasably engage the post-engaging pins. The mounting units are also formed for single-handed automatic unlocking and release of the pair of hooks from the mounting units and posts upon rotation of the shell member forwardly over the wheelchair seat by an amount in excess of any displacement occurring during normal use of the wheelchair.

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patent: 6257665 (2001-07-01), Nagamitsu et al.
patent: 6688693 (2004-02-01), Christofferson et al.
patent: WO 02/28339 (2002-04-01), None

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