发明授权
- 专利标题: Hoist with proximity limit switches
- 专利标题(中): 起升机带接近限位开关
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申请号: US429715申请日: 1999-10-29
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公开(公告)号: US06135421A公开(公告)日: 2000-10-24
- 发明人: Phillip J. Bartelme , Neal W. Becker
- 申请人: Phillip J. Bartelme , Neal W. Becker
- 申请人地址: DE Wilmington
- 专利权人: MHE Technologies, Inc.
- 当前专利权人: MHE Technologies, Inc.
- 当前专利权人地址: DE Wilmington
- 主分类号: B66D1/56
- IPC分类号: B66D1/56 ; B66D3/24 ; B66D1/48
摘要:
A hoist apparatus comprising a frame, a hoist drum mounted on the frame for rotation about a drum axis, a motor connected to the drum for selectively rotating the drum in opposite wind-up and wind-off directions about the drum axis, a hoist rope wound around the drum such that the rope winds on to and off of the drum in response to rotation of the drum in the wind-up and wind-off directions, respectively, the rope having a maximum wind-up point beyond which it is not desirable to wind a significant amount of rope on to the drum, and a proximity switch mounted on the frame adjacent the drum such that the drum moves relative to the switch, the switch being capable of sensing the presence of the rope without touching the rope, and the switch preventing the motor from rotating the drum in the wind-up direction when the switch senses the presence of the rope on the drum at the maximum wind-up point.
公开/授权文献
- US5622303A Method and device for soldering workpieces 公开/授权日:1997-04-22
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