Drilling apparatus

Details Drilling apparatus Drilling apparatus

1976-10-26

1978-08-22

Purser, Ernest R.

Tool driving or impacting

Drive by means reacting to rotating eccentric mass

285134, E21B 500

Patent

active

041082540

ABSTRACT:
A fluid operated drill is supported upon a boom, which is in turn supported upon a mechanism for moving the boom to different positions, the mechanism being rotatable about a central axis with respect to a relatively stationary frame. A fluid collector means is provided including circumferential grooves communicating with channels for conducting operating fluids from the frame to the positioning mechanism and the fluid operated drill.

REFERENCES:
patent: 2588928 (1952-03-01), Humpal et al.
patent: 2820650 (1958-01-01), Leopold
patent: 3166344 (1965-01-01), Davis
patent: 3240279 (1966-03-01), Dorkins
patent: 3424318 (1969-01-01), Lorence
patent: 3470969 (1969-10-01), Arcangeli
patent: 3477746 (1969-11-01), Watson
patent: 3517694 (1970-06-01), Lieffring
patent: 3533515 (1970-10-01), Milner
patent: 3711047 (1973-01-01), O'Leary
patent: 3743223 (1975-07-01), Spellman

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