Wheelchair with pivotal back rest

Details Wheelchair with pivotal back rest Wheelchair with pivotal back rest

1996-11-12

1999-10-26

Mai, Lanna

Land vehicles

Wheeled

Occupant propelled type

297DIG4, B62H 100

Patent

active

059714174

ABSTRACT:
A back rest assembly (22) including a back shell (24), a back rest cushion (26), and a mounting assembly (28) for securing back shell (24) to upright posts (16, 18) that form part of the frame of a wheelchair (10). Mounting assembly 28 includes a mounting block (30), a pair of resilient pads (32), a fastener band (34), a barrel nut (38), and a pivot pin (36). Mounting assembly (28) pivotally supports back shell (24) between upright posts (16, 18) at two pivot points on the posts. Mounting assembly (28) is adjustably secured on each post (16, 18) so that the pivot points can be positioned to align with a person's pelvis.

REFERENCES:
patent: 5062677 (1991-11-01), Jay et al.
patent: 5149173 (1992-09-01), Jay et al.
patent: 5211446 (1993-05-01), Jay et al.
patent: 5364162 (1994-11-01), Bar et al.
patent: 5407248 (1995-04-01), Jay et al.
patent: 5524971 (1996-06-01), Jay et al.
patent: 5556168 (1996-09-01), Dinsmoor, III et al.
patent: 5593211 (1997-01-01), Jay et al.
patent: 5782536 (1998-07-01), Heidmann et al.

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