Pneumatic ground piercing tool with detachable head

Details Pneumatic ground piercing tool with detachable head Pneumatic ground piercing tool with detachable head

1994-02-22

1995-11-14

Smith, Scott A.

Tool driving or impacting

Impacting devices

Selective axial direction of impact

173128, 175 19, E21B 406, E21B 1102

Patent

active

054657970

ABSTRACT:
A pneumatic ground piercing tool has a head which can be removed and replaced with a replacement head of the same or different design. The detachable head is mounted on the an axial rod behind a threaded surface of the rod, and a nut is threadedly secured on the front threaded portion of the rod, whereby the head is clamped between a front end of the tool housing and the nut. The nut can be unscrewed from the rod to permit replacement of the head. A clamp-loading locking mechanism is used to secure the head to the nut to prevent the nut and head from loosening during operation.

REFERENCES:
patent: 3865200 (1975-02-01), Schmidt
patent: 4100979 (1978-07-01), Schmidt
patent: 4100980 (1978-07-01), Jenne
patent: 4221157 (1980-09-01), Schmidt
patent: 4284147 (1981-08-01), Jenne
patent: 4462468 (1984-07-01), Jenne
patent: 4505302 (1985-03-01), Streatfield
patent: 4570723 (1986-02-01), Kostylev
patent: 4618007 (1986-10-01), Kayes
patent: 4662457 (1987-05-01), Bouplon
patent: 4809789 (1989-03-01), McFarlane
patent: 5025868 (1991-06-01), Wentworth
patent: 5109932 (1992-05-01), Bueter et al.
patent: 5199151 (1993-04-01), Wentworth
patent: 5226487 (1993-07-01), Spektor
patent: 5311950 (1994-05-01), Spektor

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