Fishing tool for retrieving implements from a hole

Details Fishing tool for retrieving implements from a hole Fishing tool for retrieving implements from a hole

E - Fixed Constructions

21

B

E21B 31/12 (2006.01) E21B 31/18 (2006.01)

Patent

CA 2044662

A fishing tool for retrieving broken or last implements from a drilled hole includes a one-piece body having a bore extending from one end to the other. Oppositely positioned and inwardly directed male keys extend from the inner surface of the bore. The male keys extend along a substantial portion of the length of the bore and engage oppositely positioned portions of a catch slip. The catch slip is slidable along the length of the bare and is guided by the male keys and supported by the inner surface of the bore. The lower end of the body may be provided with a removable guide bushing and a removable guide for retaining the guide bushing in place at the lower end of the body. A front face of the catch slip may be provided with a buttress thread for firmly grasping the implement being retrieved and for permitting the grasped implement to be released while it is still in the hole through rotation of the tool.

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