发明名称 |
SELF-JAMMING SAFETY DEVICE FOR A ROPE |
摘要 |
A self-jamming safety device for a rope comprises two pulleys, one of which is fixed on a base flange, and the other on a support plate capable of pivoting on an articulation spindle. The pulley is provided with a first braking surface, against which the rope is pressed by a boss of the pulley when the support plate is driven by the tension of the rope to a first jamming position. The pulley is equipped with a second braking surface operating in conjunction with the first surface following continued pivoting movement of the support plate to a second jamming position. Switching between the two jamming positions takes place after the tension of the rope has exceeded a preset threshold.
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申请公布号 |
US5076400(A) |
申请公布日期 |
1991.12.31 |
申请号 |
US19900518507 |
申请日期 |
1990.05.03 |
申请人 |
PETZL SA |
发明人 |
PETZL, PAUL;PETZL, PIERRE |
分类号 |
A62B1/08;A62B1/14;A63B29/02 |
主分类号 |
A62B1/08 |
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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