Method for locating buried pipes and cables

Details Method for locating buried pipes and cables Method for locating buried pipes and cables

2009-06-08

2010-11-02

Patidar, Jay M (Department: 2858)

Electricity: measuring and testing

Conductor identification or location

Inaccessible

C324S326000

Reexamination Certificate

active

07825647

ABSTRACT:
A method of locating a buried conductor such as a pipe uses an electronic transmitter to generate a signal having a predetermined frequency with is applied to the pipe via an alligator clip or other appropriate connector. A ground connection to the transmitter is established by connecting another alligator clip or other appropriate connector to a grounding sheet made of chain mail or metal cloth. A electrolyte solution is poured on the grounding sheet and/or around a portion of the surface region adjacent the grounding sheet. The signal that is re-radiated by the buried pipe is detected with a man portable locator which determines the location of the buried pipe and displays the same to a user.

REFERENCES:
patent: 2084523 (1937-06-01), Crawford
patent: 3935670 (1976-02-01), Pluenneke et al.
patent: 3991363 (1976-11-01), Lathrop
patent: 5194812 (1993-03-01), Yokoi
patent: 5808852 (1998-09-01), Iannotti
patent: 6529006 (2003-03-01), Hayes

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