| 摘要 |
<p>A hole trimmer ( 10 ) for removing peripheral material projecting inside a hole ( 1 ), including a severing mechanism ( 11 ) with first ( 14 ) and second ( 15 ) opposing cutting surfaces, configured such that the first cutting surface ( 14 ) is incapable (whilst the second cutting surface ( 15 ) is capable) of passing through the hole ( 1 ). The hole trimmer also includes an actuation mechanism ( 12 ) for reversibly moving the first ( 14 ) and second cutting surfaces ( 15 ) towards and away from each other. The first cutting surface has a lower surface intersected by the actuation mechanism. In use, the second cutting surface ( 15 ) is inserted into the hole ( 1 ) the actuation mechanism ( 12 ) is then activated to move the second cutting surface ( 15 ) into abutting contact with the lower surface of the first cutting surface ( 14 ) severing any material interposed therebetween.</p> |
