Abstract: A grease gun includes a housing; a motor assembly; a pump assembly including a plunger; canister assembly configured to provide grease to the pump assembly and including a canister defining an interior in which grease is stored; a pump housing to which the canister assembly is coupled and including a discharge path in which the plunger is at least partially supported communicating the interior of the canister with an outlet; a check valve at least partially supported downstream of the plunger; and a relief valve at least partially defining a relief path downstream of the check valve configured to convey grease from the discharge path to the canister. The relief valve is operable in a first mode, automatically opening when a pressure in the discharge path exceeds a pressure threshold, and a second mode, selectively opened allowing grease to flow from the discharge path to the canister.

Abstract: A power tool that includes a housing, an electric motor, an input device, a reciprocation drive assembly, a striker, an anvil, and an electronic controller is provided. The electronic controller can control the electric motor based on a state of the input device. The electronic controller can receive a first signal from the input device, the first signal indicating a first constant speed of the electric motor, and, in response to the first signal, set an operational speed of the electric motor to the first constant speed. The electronic controller can further receive a second signal from the input device, the second signal indicating a second constant speed of the electric motor that is greater than the first constant speed, and, in response to the second signal, set the operational speed of the electric motor to the second constant speed.