发明申请
US20060006875A1 Sondes for locating underground pipes and conduits 有权
用于定位地下管道和管道的探头

Sondes for locating underground pipes and conduits
摘要:
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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