Hinge fittings for adjustable seats

B - Operations – Transporting – 60 – N

Patent

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155/2

B60N 2/22 (2006.01) B60N 2/02 (2006.01)

Patent

CA 1216506

ABSTRACT A hinge fitting for an adjustable seat has a single rotatable handle by means 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 eccen- trics 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 tooth- ings on the other hinge part. Rotation of this eccentric causes the inclination of the back rest to be adjusted. The other eccen- tric is coupled to a portion of the end of the seat support which is constructed as a three-stage hollow piston having inner tooth- ings engaging spur gear areas on the adjacent seat hinge part. Rotation of this eccentric causes the height of the seat to be adjusted.

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