Pneumatic impact motor

Details Pneumatic impact motor Pneumatic impact motor

1979-09-19

1982-01-05

Schroeder, Werner H.

Tool driving or impacting

Impacting devices

Hammer head constitutes piston of drive motor

B25D 918

Patent

active

043089259

ABSTRACT:
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 muffler for such a pneumatic motor.

REFERENCES:
patent: Re28859 (1976-06-01), Beaumont
patent: 622576 (1899-04-01), Waugh
patent: 726074 (1903-04-01), Kotten
patent: 4070948 (1978-01-01), Tkach et al.

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