Drilling arrangement and drilling feed mechanism

Details Drilling arrangement and drilling feed mechanism Drilling arrangement and drilling feed mechanism

E - Fixed Constructions

21

B

E21B 19/08 (2006.01) E21B 19/086 (2006.01)

Patent

CA 2160987

A drilling arrangement wherein a cylinder (120) of a multistage telescopic feed mechanism acts on a drill to move it in a first direction and two pistons (122; 124) extend from the cylinder only in a second direction opposite to the first direction, acting against a feed beam (110).

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