Hinge structure for seat with adjustable backrest

Details Hinge structure for seat with adjustable backrest Hinge structure for seat with adjustable backrest

1985-11-14

1987-05-26

Aschenbrenner, Peter A.

Chairs and seats

Movable back

Tiltable

74805, B60N 106, F16H 5518

Patent

active

046680136

ABSTRACT:
In hinge structures for seats having adjustable backrests, a hinge piece attached to the fixed seat (12) and a hinge piece (6) attached to the adjustable backrest (13) are connected on a pivot axle (7) with an eccentric portion (7a). One hinge piece has inwardly projecting teeth (6a) defining a toothed zone into which extend the outwardly projecting teeth (8a) of a spur gear zone of the second hinge piece, thus forming a wobble-plate gear unit. In addition to both of these toothed zones, there is provided on the first hinge piece a second inwardly projecting toothed zone (6b) concentric with an axially displaced from the first inwardly projecting toothed zones and meshed with a second spur gear zone (8b) concentric with and axially displaced from the first spur gear zone.

REFERENCES:
patent: 1770035 (1930-07-01), Heap
patent: 3323497 (1967-06-01), Parschke
patent: 3673891 (1972-07-01), Pickles
patent: 3807797 (1974-04-01), Klingelhofer
patent: 4196931 (1980-04-01), Werner
patent: 4227741 (1980-10-01), Goss et al.
patent: 4345792 (1982-08-01), Shephard
patent: 4439053 (1984-03-01), Pelz
patent: 4453767 (1984-06-01), Walk et al.

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