Apparatus for improving impact tool lubrication

Details Apparatus for improving impact tool lubrication Apparatus for improving impact tool lubrication

1993-03-23

1995-01-03

Schoeppel, Roger J.

Boring or penetrating the earth

Boring without earth removal

Fluid passage to exterior of drive point

175106, 175296, 175418, E21B 1038

Patent

active

053777700

ABSTRACT:
An impact tool having an air-operated hammer for impacting against an anvil in the body of the tool to cause the tool to tunnel through the ground, and having passages and conduits opening to the front region of the tool to pass water to lubricate the tool and wet the soil proximate the front of the tool, to ease the passage of the tool through the soil during the propulsion of the tool.

REFERENCES:
patent: 955729 (1910-04-01), Welsh
patent: 1005770 (1911-10-01), Clark
patent: 3763654 (1973-10-01), Matsushita
patent: 3885638 (1975-05-01), Skidmore
patent: 4070948 (1978-01-01), Tkach et al.
patent: 4144941 (1979-03-01), Ritter
patent: 4250972 (1981-02-01), Schmidt
patent: 4280573 (1981-07-01), Sudnishnikov et al.
patent: 4596292 (1986-06-01), Crover
patent: 4749050 (1988-06-01), Ritter

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