Title:
REMOTE LOCK-OUT SYSTEM AND METHOD FOR A HORIZONTAL DIRECTION DRILLING SYSTEM
Document Type and Number:
WIPO Patent Application WO2001044614
Kind Code:
B1
Abstract:
Systems and methods for remotely altering operation of a horizontal directional drilling machine provide for remotely disabling movement of a drill string coupled to a cutting head or reamer and, in addition or optionally, disabling dispensing of fluid, foam and/or air communicated through the drill string. A lockout signal is transmitted from a portable remote unit operated by an operator remotely situated from the drilling machine. In response to a received lockout signal, a drilling machine controller disables drill string movement and thus cutting head or reamer movement, and also disables dispensing of fluid, foam and/or air through the drill string. The drilling machine controller effects transmission of a verification signal to the remote location, which unambiguously indicates successful receipt of the lockout signal by the drilling machine, disablement of drill string movement and, if applicable, disablement of fluid, foam and/or air supply through the drill string.
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Inventors:
BRAND IVAN R
AUSTIN GREGG A
DELONTI FRED G
AUSTIN GREGG A
DELONTI FRED G
Application Number:
PCT/US2000/033896
Publication Date:
January 31, 2002
Filing Date:
December 14, 2000
Export Citation:
Assignee:
VERMEER MFG CO (US)
International Classes:
E21B7/04; E21B44/00; (IPC1-7): E21B7/04; E21B44/00
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