Hinge fittings for adjustable seats

Details Hinge fittings for adjustable seats Hinge fittings for adjustable seats

1984-05-24

1986-04-08

Lyddane, William E.

Chairs and seats

Movable back

Tiltable

74375, 74804, 74805, 248394, 297329, 297364, B60N 102

Patent

active

045808384

ABSTRACT:
A hinge fitting for an adjustable seat has a single rotatable handle by ms of which the back rest can be tilted and the height of the seat portion adjusted. The handle is connected to a shaft which can be selectively coupled to one of two eccentrics mounted on an axle which passes through the two hinge parts and one end of a pivotable seat support. One eccentric is coupled to one hinge part which has spur gear areas engaging inner toothings on the other hinge part. Rotation of this eccentric causes the inclination of the back rest to be adjusted. The other eccentric is coupled to a portion of the end of the seat support which is constructed as a three-stage hollow piston having inner toothings engaging spur gear areas on the adjacent seat hinge part. Rotation of this eccentric causes the height of the seat to be adjusted.

REFERENCES:
patent: 1949167 (1934-02-01), Magbach
patent: 2526248 (1950-10-01), Luketa
patent: 2655199 (1953-10-01), Luketa
patent: 3217566 (1965-11-01), Sanson
patent: 3463543 (1969-08-01), Zellar
patent: 3955445 (1976-05-01), Osterwalder
patent: 4065983 (1978-01-01), Mimura
patent: 4453767 (1984-06-01), Walk et al.
patent: 4488451 (1984-12-01), Ligensa et al.

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