发明名称 |
Single line multiple purchase block and tackle system |
摘要 |
A block and tackle system having two different purchases is operated from a single line. The system includes a primary purchase system and a secondary system having a higher purchase than the primary system. The primary and secondary systems are separated by a one-way block, and the secondary system is connected back to a floating block in the primary system. The secondary system is activated upon initial ease of the line from any given position, with the one-way block locking the line in the ease direction.
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申请公布号 |
US5538223(A) |
申请公布日期 |
1996.07.23 |
申请号 |
US19940230594 |
申请日期 |
1994.04.21 |
申请人 |
SCACE, GREGORY;ZUTECK, MICHAEL D. |
发明人 |
SCACE, GREGORY;ZUTECK, MICHAEL D. |
分类号 |
B63H9/10;B66D3/04;B66D3/06;(IPC1-7):B66D3/08 |
主分类号 |
B63H9/10 |
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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