Patent ID: 7347677

Claim:
A vane pump, comprising: a body having a body bore formed therein, the body bore having an opening face, and a receiving step portion formed in the opening face, the receiving step portion having a depth; a cam ring arranged in the body bore; a rotor arranged inside of the cam ring; a plurality of vanes arranged on an outer surface of the rotor, the plurality of vanes moving in and out along an inner surface of the cam ring with a rotation of the rotor; a cover fastened to the body to cover an opening face of the body bore; and an iron reinforcing plate arranged in the body bore, being received in the receiving step portion, and being placed between the cam ring and the cover, the reinforcing plate being formed of iron sintered alloy, and having a maximum thickness that is less than a depth of the receiving step portion; and an O-ring interposed in the body bore to press the cam ring against the reinforcing plate, thereby absorbing a clearance that would otherwise occur between the cover and the reinforcing plate.