Chairs and seats – Movable back – Tiltable
Patent
1980-09-16
1984-07-03
Lyddane, William E.
Chairs and seats
Movable back
Tiltable
16354, 74805, A47C 1025
Patent
active
044575564
ABSTRACT:
A fitting for adjustably connecting a backrest part to a seat part of a seat, particularly an automotive vehicle seat, includes a backrest mounting member and a seat mounting member which are respectively connectable to the backrest and seat parts of the seat. A ring gear is formed on the backrest mounting member and has a predetermined number of inwardly directed teeth centered relative to a ring-gear axis. A spur gear is located intermediate the backrest mounting member and the seat mounting member and has a number of outwardly directed teeth which is at least one less than the predetermined number of teeth on said ring gear. The outwardly directed teeth of the spur gear mesh with the inwardly directed teeth of the ring gear and are centered relative to a spur-gear axis. A cam radially offsets the spur-gear axis from the ring-gear axis, and a turning arrangement is operative for displacing the spur gear and for orbiting the spur-gear axis about the ring-gear axis so as to vary the relative angular position of the two mounting members. The backrest mounting member is mounted for pivoting movement about a pivot axis which is coincident with the ring-gear axis. The backrest mounting member is pivoted along a circular path having its center of curvature on this pivot axis during operation of the turning arrangement.
REFERENCES:
patent: 2933986 (1960-04-01), Schroeder
patent: 3045503 (1962-07-01), Kiessling
patent: 3401979 (1968-09-01), Putsch
patent: 3423785 (1969-01-01), Pickles
patent: 3667804 (1972-06-01), Yasui et al.
patent: 3673891 (1972-07-01), Pickles
patent: 3833965 (1974-09-01), Hess
patent: 3972563 (1976-08-01), Gustafsson
Keiper Automobiltechnik GmbH & Co. KG
Lyddane William E.
Striker Michael J.
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