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

1996-10-30

1998-01-27

Lopez, F. Daniel

Expansible chamber devices

With lubricating means

Portion of expansible chamber device includes solid...

921691, 91218, F01B 3110

Patent

active

057112053

ABSTRACT:
A piston for a fluid-actuated, percussive, down-the-hole drill is provided with self-lubricating bearings and self-lubricating seals within the drill to provide a drill requiring no oil lubrication.

REFERENCES:
patent: 2793089 (1957-05-01), Anderson
patent: 3030753 (1962-04-01), Pennington
patent: 3149543 (1964-09-01), Naab
patent: 3315881 (1967-04-01), Halpin et al.
patent: 3371730 (1968-03-01), Newman
patent: 3606930 (1971-09-01), Currington
patent: 5085284 (1992-02-01), Fu
patent: 5325926 (1994-07-01), Lay 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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