US Patent 8038198 Vehicle seats

A vehicle seat includes a support base, a seat back tiltably supported on the support base, a seat cushion, a first link and a second link. Each of the first and second links is pivotally coupled to the support base and the seat cushion, so that a quadrant link mechanism is formed by the support base, the seat cushion, the first link and the second link. A coupling device couples the seat back to the first link at a position between a first coupling point and a second coupling point. The first coupling point couples the first link to the seat cushion, and the second coupling point couples the first link to the support base.