Seat back with adjustable lumbar supporter

Details Seat back with adjustable lumbar supporter Seat back with adjustable lumbar supporter

1978-06-29

1979-05-22

Zugel, Francis K.

Chairs and seats

Bottom or back with means to alter contour

A47C 746

Patent

active

041555929

ABSTRACT:
A plurality of belts or wires are slackly strung between supporters mounted on the upright leg portions of a backrest frame to cross the front of the frame. Electrically driven tensioning means successively tensions each belt or wire to cause same to become taut.

REFERENCES:
patent: 3258259 (1966-06-01), Bohlin
patent: 3273877 (1966-09-01), Geller et al.

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