Patent ID: 7168897

Claim:
A planing attachment for a rotary hand tool of the type having a generally cylindrical body with an output shaft at a nose end thereof to which a cutting bit can be attached, said attachment being configured at an attaching end to matingly engage said nose end of said hand tool, said attachment comprising: a housing having an attaching end portion and a planing tool end portion, wherein said attaching end portion is configured to matingly engage the nose end of the rotary hand tool; a leading plane and a trailing plane configured wherein one of said planes is disposed on opposite sides of the cutting bit, with an underside of said leading plane being elevated relative to an underside of said trailing plane by a distance proportional to the depth of cut made by the cutting bit; a longitudinal cavity disposed between said leading plane and said trailing plane and configured to receive said cutting bit therein; and a cutting bit support disposed at said planing tool end portion and comprising a bearing having predetermined inner and outer diameters, and a generally cylindrical bushing having a first and second open ends for receiving the cutting bit therethrough.