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Patent Searching and Data


Title:
ELECTROMAGNETIC MARKER DEVICES FOR BURIED OR HIDDEN USE
Document Type and Number:
WIPO Patent Application WO/2019/246587
Kind Code:
A3
Abstract:
The present disclosure relates to electromagnetic marker devices for locating hidden or buried objects. One embodiment includes an antenna having a plurality of conductive windings enclosed in a housing made of a low dielectric constant material and an electronic circuit including a circuit board having circuit elements disposed thereon and electrically coupled to the conductive windings through a connector. The circuit elements receive an input signal having a first frequency from an above-ground transmitter, convert the input signal to a power supply to power up the electronic circuit, generate, in response to the input signal, an output signal having a second frequency different from the first frequency, and provide the output signal, via the antenna element, to an above-ground receiver.

Inventors:
BENCH STEPHANIE (US)
OLLSON MARK (US)
BOCKMAN MATTHEW (US)
Application Number:
PCT/US2019/038585
Publication Date:
February 13, 2020
Filing Date:
June 21, 2019
Export Citation:
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Assignee:
SEESCAN INC (US)
BENCH STEPHANIE (US)
OLLSON MARK (US)
BOCKMAN MATTHEW (US)
International Classes:
G01V15/00
Foreign References:
US20170299757A12017-10-19
US20130257434A12013-10-03
Attorney, Agent or Firm:
TIETSWORTH, Steven (US)
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