Sondes for locating underground pipes and conduits

Details Sondes for locating underground pipes and conduits Sondes for locating underground pipes and conduits

2007-05-22

2007-05-22

LeDynh, Bot (Department: 2862)

Electricity: measuring and testing

Conductor identification or location

Inaccessible

C324S329000, C324S244000

Reexamination Certificate

active

10886856

ABSTRACT:
A sonde includes an elongate flexible ferromagnetic core and a coil surrounds an intermediate segment of the core. A housing surrounds and supports the coil. An electronic drive circuit is mounted in the housing for supplying the coil with an electric signal that will induce the core to emit electromagnetic signals at a predetermined strength and frequency that can be remotely detected. Self-contained battery powered float-type and pill-type sondes are also disclosed.

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Protetek AT-12 and FT-8 data sheets from the Internet (4 pgs.).

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