Chairs and seats – Movable back – Tiltable
Patent
1978-12-08
1980-09-23
Lyddane, William E.
Chairs and seats
Movable back
Tiltable
16146, 74567, A47C 1025
Patent
active
042239478
ABSTRACT:
Hinge fittings such as disclosed in U.S. Pat. No. 3,999,247 for a vehicle seat having an adjustably tiltable backrest member including pivotally connected hinge members one of which has a toothed sector engaged by a toothed pawl pivotally mounted on the other and held in locked engagement by a cam also pivotally mounted on the other hinge member. The cam has a limited pawl engagement face having an intermediate operative range when all lost motion is taken up with the teeth in full locking interengagement covering the extremities of all tolerance possibilities of the interengaging elements and with irreversible self-locking action against cam disengagement under any vibratory or backrest pivotal tilting pressure in either direction.
REFERENCES:
patent: 2153998 (1939-04-01), Vanderber et al.
patent: 3315298 (1967-04-01), Strien et al.
patent: 3432881 (1969-03-01), Putsch et al.
patent: 3479088 (1969-11-01), Bonnard
patent: 3608128 (1971-09-01), Faust
patent: 3833965 (1974-09-01), Hess
patent: 3902757 (1975-09-01), Yoshimura
patent: 3966253 (1976-06-01), Berghof et al.
patent: 3973288 (1976-08-01), Pickles
patent: 3999247 (1976-12-01), Cremer
patent: 4085969 (1978-04-01), Nakane et al.
Keiper Automobiltechnik GmbH & Co. KG
Lyddane William E.
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