Abstract: A seat for vehicle is provided comprising a seat back, a seat bottom, a pair of side brackets mounted on both sides of the bottom of said seat bottom, respectively, and a pair of seat supporting brackets, spaced from each other, mounted on the floor of the vehicle. The seat also includes two pairs of arms, each mounted at one end thereof on said side bracket and at the other end thereof on the lower end of said seat back, adapted to shift said seat back forwards and backwards. Between the side brackets and the seat supporting brackets, two pairs of legs are pivotably arranged, which are adapted to maintain a constant angle between the seat bottom and the floor of the vehicle, thus the seat bottom can be moved a certain distance by the pivoting of the legs. The seat for a vehicle also comprises a locking mechanism adapted to actuate and constrain the pivoting of the legs.

Abstract: A device for moving an automobile seat back and forth is provided. The device comprises a seat bracket attached to a main seat having an auxiliary seat, a fixed bracket secured to the bottom of the automobile, and trapezoidal legs hinged to the brackets by means of bolts located at the longer sides of said legs. Each leg is adapted to move back and forth along an arc-shaped path at the axis of each bolt as the seat moves back and forth. Each leg also has contacting sides adapted to selectively contact the brackets, depending on the movement of legs, and a pin. The device also comprises a linkage adapted to receive the pins of the legs so that movement of the seat can be constrained at the moved position thereof.