Head rest adjusting device

Details Head rest adjusting device Head rest adjusting device

1988-06-24

1989-06-20

Zugel, Francis K.

Chairs and seats

Headrest

Angularly movable about horizontal axis

297391, 2483167, A47C 736

Patent

active

048404284

ABSTRACT:
A head rest adjusting device using a friction mechanism, which permits the forward and backward rotative adjustment of the head rest relative to a head rest stay. The friction mechanism comprises a substantially U-shaped leaf spring receiving the head rest stay therein, and a protruding resilient section is formed on the folded area of the leaf spring so as to give an additional resiliency to the leaf spring per se and thus provide a stable proper friction against the rotation of the head rest about the stay.

REFERENCES:
patent: 300427 (1884-06-01), Zanger
patent: 1398519 (1921-11-01), Hosch
patent: 1970962 (1934-08-01), Hinckley
patent: 2432435 (1947-12-01), Millette
patent: 2697480 (1954-12-01), Du Bois et al.
patent: 3273846 (1966-09-01), De Mare
patent: 3300249 (1967-01-01), Schneider
patent: 3409954 (1968-11-01), Schneider
patent: 3695700 (1972-10-01), Flach
patent: 4606578 (1986-08-01), Yasui
patent: 4682817 (1987-07-01), Freber

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