Single solenoid guide system

Details Single solenoid guide system Single solenoid guide system

2007-05-22

2007-05-22

Bagnell, David (Department: 3672)

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Tool position direction or inclination measuring or...

C175S061000, C175S062000, C324S326000, C324S346000

Reexamination Certificate

active

10950688

ABSTRACT:
Measurement of the location and direction of a drill head in a borehole extending beneath an obstacle such as a body of water utilizes a single AC solenoid at a known location but having an unknown orientation. The measurements are used to direct the path of the borehole.

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