Patent ID: 11872681
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 22:
23. An impact tool comprising:
a housing having a handle portion defining a first axis;
a motor supported by the housing and defining a motor axis; and
a rotary impact mechanism arranged on a second axis that is perpendicular to the first axis, the rotary impact mechanism configured to convert a continuous rotational input from the motor to consecutive rotational impacts upon a workpiece, the rotary impact mechanism including
a chamber containing a hydraulic fluid,
an anvil positioned at least partially within the chamber,
a hammer for imparting the consecutive rotational impacts upon the anvil, the hydraulic fluid configured to attenuate a noise of the rotary impact mechanism that is created by the hammer impacting the anvil, wherein the hammer is movable in a first direction toward the anvil and a second direction away from the anvil, and
a valve assembly including a valve housing biased toward the hammer by a hammer spring and configured to move with the hammer in the second direction.