| 摘要 |
PCT No. PCT/GB97/03106 Sec. 371 Date May 13, 1999 Sec. 102(e) Date May 13, 1999 PCT Filed Nov. 12, 1997 PCT Pub. No. WO98/21138 PCT Pub. Date May 22, 1998A reel (10) for cable (21) has a drum (24) onto which the cable (21) may be wound. An electric motor (41) can turn the drum (24) to pull cable (21) in but the drum (24) can also pivot at (65) when the cable (21) is pulled or released. This rocking motion is sensed to switch the motor (41) on or off, thereby allowing slack cable (21) always to be taken up, but preventing the motor (41) resisting cable (21) paying out when required. |
