Self-lubricating, fluid-actuated, percussive down-the-hole drill

Details Self-lubricating, fluid-actuated, percussive down-the-hole drill Self-lubricating, fluid-actuated, percussive down-the-hole drill

1995-08-30

1996-10-08

Tsay, Frank

Boring or penetrating the earth

Below-ground impact members

Fluid-operated

175320, 173208, 173 73, E21B 414

Patent

active

055621708

ABSTRACT:
A fluid-actuated, percussive, down-the-hole drill having a piston slidingly supported in a casing and passageways for transmitting flow of percussive fluid to actuate the piston is provided with self-lubricating bearings and self-lubricating seals within the drill to provide a drill requiring no oil lubrication.

REFERENCES:
patent: 3371730 (1968-03-01), Newman
patent: 3606930 (1971-09-01), Currington
patent: 5259463 (1993-11-01), Bodell et al.
patent: 5299778 (1994-04-01), Kimberlin
patent: 5307881 (1994-05-01), Kimberlin
patent: 5325926 (1994-07-01), Lay et al.
patent: 5385209 (1995-01-01), Bodell et al.
patent: 5402854 (1995-04-01), Kimberlin et al.
I-R Drilling Equip., Strike Forece 6-OPT-F Downhole Drill, Forms No. PS-5760.56, Sheet 1, Dated May 30, 1987, First Edition.
Parts List For Quantum Leap.RTM. Downhole Drill Models: QL6 & QL6QM, Forms PL6076 .COPYRGT.1995 Ingersoll-Rand Company.

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