Patent ID: 6701878
Filing Date: 2004-03-09
Classification: F01L

Abstract:
A variable valve timing device comprising:a rotation transmitting member rotated integrally with one of a rotation shaft of an engine and an intake and exhaust valves controlling member for controlling an opening and closing of intake and exhaust valves of the engine; a rotor member disposed in the rotation transmitting member to be rotated relative to the rotation transmitting member and rotated integrally with the other of the rotation shaft of the engine and the intake and exhaust valves controlling member; a fluid chamber defined between the rotor member and the rotation transmitting member; a vane radially equipped to one of the rotor member and the rotation transmitting member so as to divide the fluid chamber into an advanced angle chamber and a retarded angle chamber; a covering member fixed to the rotation transmitting member for covering the fluid chamber; and a biasing member disposed between the covering member and the rotor member for biasing the rotor member in a rotative direction thereof, wherein an axial edge surface of the biasing member discontinuously comes in contact with at least one of the rotor member and the covering member.