| 摘要 |
The present invention relates shortly to a driving tool for screwing rods into teeth. This tool includes a stem (2) having an attachment means (3) for a rod in one end thereof and an operating portion (4, 9) in the other end thereof. The operating portion includes a removable sleeve (9) which surrounds the operating portion end (4) of the stem (2) and which is limitedly movable in the longitudinal direction of the stem (2). The operating portion end is preferably constituted by a cylindrical head (4) having circular cross-section and slightly greater diameter than the stem. On the operating portion end or the head (4) there are engagement means (5) and within the sleeve (9) there are cooperating engagement means (11) which engagement means (5, 11) are brought into and out of engagement respectively by the movement of the sleeve (9) between its limiting positions. |
