发明名称 |
Hoist having worm safety device |
摘要 |
A hoist having a worm safety device in which the worm is continuously meshed with a worm wheel coupled to the drum. The worm is accelerated to a speed greater than that of the worm wheel and at a torque sufficient to overcome the frictional contact between the worm and worm wheel when the hoist direction is reversed.
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申请公布号 |
US4625946(A) |
申请公布日期 |
1986.12.02 |
申请号 |
US19840590630 |
申请日期 |
1984.03.19 |
申请人 |
EDERER INCORPORATED |
发明人 |
CLARK, JR., CHARLES W.;WEST, HAROLD H. |
分类号 |
B66D1/46;B66D1/48;B66D1/58;B66D5/24;(IPC1-7):B66D1/48;B66D1/14 |
主分类号 |
B66D1/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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