Patent ID: 11958177
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC B  F  H | IPC B  F  H

Claim 6:
7. A system, comprising:
a hydraulic pump comprising:
a work port configured to couple to a fluid supply line of a hydraulic tool,
a hydraulic fluid tank configured to store a fluid,
a high-flow piston configured to supply the fluid along a first flow path from the hydraulic fluid tank to the work port,
a plurality of high-pressure pistons configured to supply the fluid along a second flow path from the hydraulic fluid tank to the work port,
an unloading valve along the first flow path, wherein the unloading valve is actuatable between an open state and a closed state, wherein the unloading valve is configured to permit the fluid to flow from the high-flow piston to the work port in the open state, wherein the unloading valve is configured to inhibit the fluid from flowing from the high-flow piston to the work port in the closed state, wherein the unloading valve is configured to actuate from the open state to the closed state when a pressure level of the fluid in the second flow path exceeds a first threshold pressure,
an electric motor configured to convert electrical energy into rotational motion, and
a mechanical transducer operably coupled to the electric motor, the high-flow piston, and the plurality of high-pressure pistons, wherein the mechanical transducer is configured to convert the rotational motion of the electric motor into a linear motion of the high-flow piston and the plurality of high-pressure pistons; and

a remote controller in communication with the hydraulic pump and configured to control operation of the hydraulic pump,
wherein the remote controller is configured to:
receive a user input selecting a mode of operation for the hydraulic pump, and
responsive to the user input, communicate the mode of operation to the hydraulic pump to cause the hydraulic pump to set the first threshold pressure to a value corresponding to the mode of operation.