| 摘要 |
A rotary pipe cutting apparatus (10, 60) for removing sections of broken pipe (14) from the bore of an outer pipe (12). The invention includes a cylindrical body (16) with a longitudinal slot (24) that is angularly offset from the rotational axis of the body and which is tapered in depth and width from top (26) to bottom (20). A blade (30, 76) is included on the body (16) adjacent the slot (24) and the lower end of the body, with the blade (30, 76) having cutting edges which extend both downward and radially outward from the body. A detachable and interchangeable guide member (32) is included on the lower end of the body, and stopping member (46) is included on the upper end of the body. A shank (48, 64) on the upper end of the body allows attachment of the apparatus to a rotary power tool. |
