Pneumatic motor

Details Pneumatic motor Pneumatic motor

B - Operations, Transporting

25

D

121/29

B25D 9/04 (2006.01) B25D 17/12 (2006.01) E21B 1/30 (2006.01)

Patent

CA 1147219

ABSTRACT OF THE DISCLOSURE A reciprocating pneumatic motor for rock drills and the like wherein a freely-movable hammer piston repeatedly strikes the end of a drill rod, usually a rotating drill rod. Fluid under pressure enters a single, central inlet port in the wall of a cylinder which houses the piston with alternate cycling ports being incorporated into the piston itself. Also disclosed is a novel muffler for such a pneumatic motor.

360007

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