发明名称 |
Collapsible crane backhitch and overload signal system |
摘要 |
An energy absorbing backhitch for a lift crane including a hollow deformable element which is collapsed between squeeze rollers when the crane is over loaded a predetermined amount with respect to its rated capacity. The backhitch also includes a lift pin and means for sensing deflection of the lift pin and actuating visual and audio signals at predetermined load conditions.
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申请公布号 |
US4131078(A) |
申请公布日期 |
1978.12.26 |
申请号 |
US19770792100 |
申请日期 |
1977.04.29 |
申请人 |
THE MANITOWOC COMPANY, INC. |
发明人 |
MORROW, SR., JAMES G. |
分类号 |
B66C23/88;B66C23/90 |
主分类号 |
B66C23/88 |
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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