Patent ID: 8225907

Claim:
A system for lubricating a chain saw with grease, the system comprising a grease pump having a pump inlet and a pump outlet, a grease reservoir receiving the grease and communicating with the pump inlet, and a pump activator adapted to receive a signal indicative of activation of the chain saw, to activate the grease pump upon receiving the signal and to control the grease pump according to at least one predetermined pumping parameter, wherein the at least one predetermined pumping parameter includes at least one of a predetermined period of time during which grease is injected and a predetermined amount of injected grease; the chain saw having a guide bar with a slit defined in an edge thereof, and an endless chain slidingly engaged in the slit, the guide bar further having a lubricant conduit defined therethrough, the lubricant conduit having a conduit inlet connected to the pump outlet, and a conduit outlet located in the slit through which grease is injected in the slit.