Back support

Details Back support Back support

1974-10-18

1978-08-22

Frazier, Roy D.

Chairs and seats

Bottom or back with means to alter contour

5368, 297218, 297DIG3, A47C 746, A47C 2710

Patent

active

041084926

ABSTRACT:
A back support having a plurality of individually inflatable cushions extending horizontally across a frame and arranged such that air pressure may be adjusted in individual cushions to provide selective localized support to different areas of the back. A cross brace extends between spaced end frame members to furnish a firm support for each of the individually inflatable cushions to prevent undue deformation of the cushions.

REFERENCES:
patent: 1422915 (1922-07-01), Benson et al.
patent: 2253801 (1941-08-01), Neal
patent: 2306673 (1942-12-01), Tucker
patent: 2672183 (1954-03-01), Forsyth
patent: 3019051 (1962-01-01), Nugent
patent: 3154345 (1964-10-01), Lambrecht
patent: 3499682 (1970-03-01), Orenstein
patent: 3501197 (1970-03-01), Burton
patent: 3813716 (1974-06-01), Francis

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