Small diameter impact boring tool

Details Small diameter impact boring tool Small diameter impact boring tool

1997-01-27

1998-10-06

Smith, Scott A.

Tool driving or impacting

Impacting devices

Selective axial direction of impact

173206, 175 19, 175296, E21B 414

Patent

active

058163425

ABSTRACT:
An elongated tube has a high pressure feed line on one end and an impact head on the other end. A tube intermediate the ends of the tool houses two cylinders having one piston is in each cylinder. The two pistons are tied together by a piston rod extending through a bulkhead dividing the two coaxially aligned cylinders.

REFERENCES:
patent: 4114950 (1978-09-01), Cooper
patent: 4618007 (1986-10-01), Kayes
patent: 4840237 (1989-06-01), Roemer
patent: 4886128 (1989-12-01), Roemer
patent: 5056608 (1991-10-01), Hemmings
patent: 5210918 (1993-05-01), Wozniak et al.
patent: 5226487 (1993-07-01), Spektor
patent: 5413185 (1995-05-01), Kayes
patent: 5505270 (1996-04-01), Wentworth

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