Power feed system for a rotary drill

Details Power feed system for a rotary drill Power feed system for a rotary drill

1984-05-23

1985-09-10

Maslousky, Paul E.

Expansible chamber devices

Mutually relatively movable cylinder or sleeve, member...

Cylinder or sleeve forms working member

92110, 92117A, F01B 1502

Patent

active

045398933

ABSTRACT:
Disclosed herein is a power feed system for translating a rotary drill head along the length of a guide tower. The system utilizes a compound balanced area, end fed hydraulic cylinder as the actuating means. This arrangement provides a large ratio of fixed overall length to usable travel distance, balanced feed force in both directions, direct connection of the rotary head to the outer stage of the cylinder, and drift-free operation, all without the need for moving hydraulic hoses.

REFERENCES:
patent: 769106 (1904-08-01), McCarthy
patent: 2804051 (1957-08-01), Lushonsky, Jr.
patent: 2922398 (1960-01-01), Lindsey

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