发明名称 |
Logging grapple |
摘要 |
A grapple comprising a grapple head to which is pivotally mounted left and right tongs. Two double acting hydraulic cylinders extend between the tong pivot points and the other tong. The piston side of the hydraulic cylinders are hydraulically coupled together by a closed center flow divider valve. A cross over relief valve assembly is mounted in parallel with the flow divider valve.
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申请公布号 |
US5558380(A) |
申请公布日期 |
1996.09.24 |
申请号 |
US19940308778 |
申请日期 |
1994.09.19 |
申请人 |
DEERE & COMPANY |
发明人 |
MEYER, DOUGLAS G.;IRWIN, STANLEY L. |
分类号 |
B66C1/58;(IPC1-7):B66C1/42 |
主分类号 |
B66C1/58 |
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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