Abstract: A hinge fitting for motor vehicle seats having an adjustable backrest comses a fixed hinge member, which is associated with the seat, and a swivelling hinge member which is associated with the backrest. The two hinge members are connected via an eccentric so as to swivel, and both hinge members comprise sets of toothing which engage with each other and form part of a wobble mechanism. The eccentric may be swivelled about a first swivelling axis in a first pivot bearing relative to the other hinge member. Both pivot bearings are arranged eccentrically relative to each other. The pivot bearings are formed by plain bearing bushings which are mounted in the hinge members. For the purpose of calibration by means of a calibrating mandrel, the plain bearing bushings are plastically compressible. The running surfaces of the plain bearing bushings observe, in each case, the smallest spacing from the associated axis of the hinge member which accommodates the respective plain bearing bushings.

Abstract: A seat has a lumbar support which comprises a flexible pressure strap card by a U-shaped harness extending across the back rest. The support is infinitely variably pivotable realtive to the back rest frame.

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.