| 摘要 |
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. |
