AUTOMATIC OILING SYSTEM FOR CHAIN SAW

摘要

Title of the Invention AUTOMATIC OILING SYSTEM FOR CHAIN SAW A portable power driven chain saw (20) having an automatic oiling system (54) including an externally adjustable control valve (60) which meters an adjustable flow of oil (69, therethrough unidirectionally and to stop the flow in the valve when the chain saw (20) is stopped. An improved oil pump (58) is provided of the rotor (72) vane type. The adjustable member (124) of the control valve (60) has a longitudinal opening (130) for the flow of oil (69) therethrough to the guide bar (24), also the opening (130) slidably carries the stem (144) of the check valve (140) which provides for the unidirectional flow.