Tool for cutting groove in hole

Details Tool for cutting groove in hole Tool for cutting groove in hole

E - Fixed Constructions

21

B

255/80

E21B 10/00 (2006.01) E21B 10/32 (2006.01) E21D 20/02 (2006.01)

Patent

CA 1047026

TITLE OF THE INVENTION TOOL FOR CUTTING GROOVE IN HOLE ABSTRACT OF THE DISCLOSURE A tool for being inserted in a hole, especially a hole in an earth formation, and adapted for being rotated in the hole. A cutting element movably mounted on the tool is provided for cut- ting a groove in the hole and, if the tool is moved axially in the hole while rotating, a helical groove will result. The cut- ting element is retractable to permit removal of the tool from the hole. The hole with the groove formed therein is adapted for receiving a roof bolt or the like which is cemented in place and the aforementioned groove improves the strength with which the bolt is held in the hole.

233457

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