Drive assembly for a power tool
AssigneeMilwaukee Electric Tool Corporation
InventorWilliam A. Elger
Life of this patent
Estimating the term…
Abstract
A drive assembly for an impact wrench includes a tool element for working on a workpiece. The drive assembly also includes a ram rotatable about a central axis. The ram includes a ram lug spaced from the central axis. The ram lug has at least one drive surface. The drive assembly further includes an anvil having an anvil lug with at least one driven surface engageable with the drive surface of the ram lug to drive the anvil. The anvil is connectable to the tool element to rotatably drive the tool element. At least one of the drive surface and the driven surface includes an involute profile.
Claims20
A drive assembly for an impact wrench, the impact wrench including a tool element for working on a workpiece, the drive assembly comprising:
- a ram rotatable about a central axis, the ram including a ram lug spaced from the central axis, the ram lug having at least one drive surface;
- and
- an anvil including an anvil lug having at least one driven surface engageable with the drive surface of the ram lug to drive the anvil, the anvil connectable to the tool element to rotatably drive the tool element;
- wherein each of the drive surface and the driven surface includes an involute profile.
An impact wrench operable with a tool element for working on a workpiece, the impact wrench comprising:
- a housing;
- a motor supported by the housing;
- a ram rotatable about a central axis in response to torque received from the motor, the ram including a ram lug spaced from the central axis, the ram lug having at least one drive surface;
- and
- an anvil including an anvil lug having at least one driven surface engageable with the drive surface of the ram lug to drive the anvil, the anvil connectable to the tool element to rotatably drive the tool element;
- wherein each of the drive surface and the driven surface includes an involute profile.
Dependencies are inferred from the claim text.