Chairs and seats – Having detachably interfitting parts or components; i.e.,... – Interfitted back and back frame
Patent
1990-11-01
1993-05-18
Brown, Peter R.
Chairs and seats
Having detachably interfitting parts or components; i.e.,...
Interfitted back and back frame
297452, 297DIG4, 2972847, 2972848, A47C 742
Patent
active
052114465
ABSTRACT:
A wheelchair back system provides height adjustability of the back for the user, a lumbar support and bolsters for the back, as well as adjustment of the tilt of the back. The back system is removably affixed to the wheelchair by a pair of vertical channels adapted to partially encircle the vertical wheelchair posts, brackets affixed to the wheelchair posts, and straps which engage the brackets. A twist lock may be used to secure the straps in the brackets.
REFERENCES:
patent: 2577050 (1951-12-01), Van Buren
patent: 4375295 (1983-03-01), Volin
patent: 4981325 (1991-01-01), Zacharkow
patent: 5035467 (1991-07-01), Axelson et al.
Jay Eric C.
Nordquist Michael H.
Brown Peter R.
Jay Medical Ltd.
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