Electricity: measuring and testing – Of geophysical surface or subsurface in situ – For small object detection or location
Patent
1996-10-09
1998-06-16
Snow, Walter E.
Electricity: measuring and testing
Of geophysical surface or subsurface in situ
For small object detection or location
125 45, G01V 311, G01V 3165, H04B 1302
Patent
active
057676780
ABSTRACT:
The present invention provides a locator/monitor capable of locating a boring tool and monitoring the progress of the tool for control purposes. The locator/monitor may be used in expedited locating methodology and straightforward calibration techniques of the present invention. A durable and cost effective pitch sensor is also provided by the present invention. In addition, the present invention provides a slotted transmitter housing formed of an electrically conductive material, where the magnetic field generated by the transmitter is capable of penetrating to the surface.
REFERENCES:
patent: 5014008 (1991-05-01), Flowerdew
patent: 5155442 (1992-10-01), Mercer
patent: 5174033 (1992-12-01), Rider
Digital Control, Inc.
Pritzkau Michael
Shear Stephen C.
Snow Walter E.
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