Patent ID: 11890726
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A power tool comprising:
a housing;
a motor positioned within the housing; and
an impulse assembly coupled to the motor to receive torque therefrom, the impulse assembly including
a cylinder at least partially forming a chamber containing a hydraulic fluid,
an anvil positioned at least partially within the chamber,
a hammer positioned at least partially within the chamber, the hammer including a first side facing the anvil and a second side opposite the first side;
a biasing member biasing the hammer towards the anvil, and
a valve movable between a first position that permits a first fluid flow rate of the hydraulic fluid in the chamber from the second side to the first side, and a second position that permits a second fluid flow rate of the hydraulic fluid in the chamber from the first side to the second side,

wherein the chamber is a first chamber, and wherein the cylinder defines a second, expansion chamber in fluid communication with the first chamber.