发明名称 |
Elevator for casing |
摘要 |
An elevator for casing pullers with elevator links adapted for motorized opening and for the lateral approach to a casing which is to be pulled. One of the elevator links is constructed as a hook, into which a locking bolt of a power jack can be pivoted, which said power jack is copivotingly secured on the second movable elevator link and closes the elevator by retraction of the locking bolt.
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申请公布号 |
US4441749(A) |
申请公布日期 |
1984.04.10 |
申请号 |
US19810291943 |
申请日期 |
1981.08.11 |
申请人 |
STAHL- UND APPARATEBAU HANS LEFFER GMBH |
发明人 |
BLASCHKE, KURT;ROOB, JOSEF |
分类号 |
E21B19/06;(IPC1-7):B66C1/42;E21B19/02 |
主分类号 |
E21B19/06 |
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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