Percussion boring machine with run monitoring

Details Percussion boring machine with run monitoring Percussion boring machine with run monitoring

1997-12-02

2000-11-07

Lillis, Eileen D.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Tool position direction or inclination measuring or...

175 26, 7315203, E21B 4701, E21B 726

Patent

active

061422444

ABSTRACT:
In a percussion boring machine having run monitoring a measuring and transmitting unit and an above-ground receiver the pneumatically or hydraulically driven and controlled striking piston (3) reciprocates between the tip of the machine and a rear stop (8). In order to expose the measuring and transmitting unit as little as possible to the influence of the ram blows acting on the tip of the machine, it is arranged so that (when viewed in the direction of advance) it is in front of the rear stop.

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patent: 5490569 (1996-02-01), Brotherton et al.
patent: 5526886 (1996-06-01), Jenne
patent: 5597046 (1997-01-01), Fisk

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