Adjustable backrest

Details Adjustable backrest Adjustable backrest

1993-08-05

1994-09-06

Brown, Peter R.

Chairs and seats

Supplemental back

Including a means to adjust supplemental back relative to a...

2972844, 2972845, 2972847, 2972849, A47C 746

Patent

active

053442113

ABSTRACT:
An adjustable backrest for supporting a human back comprising a straight spine member; a lumbar support member projecting from the straight spine member; an upper back support member projecting from the straight spine member adjacent the lumbar support member; a back pad resting on the lumbar support member and the upper back support member for supporting the human back; means for adjusting curvature of the lumber support member and means for adjusting curvature of the upper back support member to accommodate different shapes of the human back; means for providing side-to-side mobility of the back pad to accommodate twisting movement of the human back.

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