Seat backrest having an adjustable lumbar support

Details Seat backrest having an adjustable lumbar support Seat backrest having an adjustable lumbar support

1975-03-31

1976-08-10

Mitchell, James C.

Chairs and seats

Bottom or back with means to alter contour

A47C 300

Patent

active

039737977

ABSTRACT:
A seat backrest having a contourable upholstered portion supported by a rigid frame includes means to impart a curvature to the upholstered portion to produce a desired supporting contour in the lumbar area of the seat's occupant. The contour-producing means includes a lumbar pad, a resilient member connecting the lumbar pad to the frame, and means operable from the side of the backrest for moving and holding the connecting member in a plurality of positions.

REFERENCES:
patent: 2097541 (1937-11-01), Turner
patent: 2991124 (1961-07-01), Schwarz
patent: 3215468 (1965-11-01), Swenson et al.
patent: 3403938 (1968-10-01), Cramer et al.
patent: 3762769 (1973-10-01), Poschl

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