| 摘要 |
<p>PCT No. PCT/DE85/00055 Sec. 371 Date Oct. 25, 1985 Sec. 102(e) Date Oct. 25, 1985 PCT Filed Feb. 25, 1985 PCT Pub. No. WO85/03897 PCT Pub. Date Sep. 12, 1985.The power screw driver has a power arm (2) and a reaction arm (1), as well as a ratchet wheel (7) and a multi-toothed pawl (8), that meshes with this ratchet wheel and that meshes with several teeth of the ratchet wheel (7) when the power arm (2) is in a rotational direction and when it is in the other rotational position, the pawl slips over the teeth of the ratchet wheel (7). Finally a hydraulic power cylinder is provided between the two arms (1, 2). The power arm (2) has a drive head (9), which is inside the cylinder bore hole (11) and engages in a recess (14) of the piston (13). The cylinder bore hole runs obliquely, in particular at a right angle to the power arm (2).</p> |
