Lumbar support device

Details Lumbar support device Lumbar support device

1984-11-09

1986-01-14

Zugel, Francis K.

Chairs and seats

Bottom or back with means to alter contour

297460, A47C 300

Patent

active

045642354

ABSTRACT:
An improved lumbar support device for use in a seat back of a vehicle seat is disclosed in which upper and lower lumbar plates are mounted in two stages independent of each other and each of the lumbar plates is connected via a connecting member to an arm engageable with a polyhedral cam, whereby the above-mentioned upper and lower lumbar plates can be moved and operated independently of each other by rotating the polyhedral cam by means of rotation of a handle shaft.

REFERENCES:
patent: 3340548 (1967-09-01), Janapol
patent: 3378299 (1968-04-01), Sandor
patent: 3807794 (1974-04-01), Beyer
patent: 4148522 (1979-04-01), Sakurada et al.
patent: 4162807 (1979-07-01), Yoshimura
patent: 4182533 (1980-01-01), Arndt et al.

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