Industrial Technology, Inc.

Sean Nash

George G Galloway

William Cory Wood

Paul R Siglinger

John N Moss

Ronald L McWilliams

Kenneth D Napps

Randy Denby

A passive electrical marker has tuned circuits, each of which includes a coil and a capacitance. The tuned circuits are oriented with respect to each other in a predetermined arrangement so as to provide a broader spatial response. A foamed core inside of the tuned circuits maintains the tuned circuits in their respective orientations and protects the tuned circuits from mechanical shock. A shell or housing around the foamed tuned circuits provides environmental protection to the tuned circuits. The tuned circuits can be foamed together in a mold and then placed into the housing. Alternatively, the tuned circuits can be foamed together inside of a housing, which housing maintains the orientations between the tuned circuits during foaming. As still another alternative, the housing can be applied to the outside of the foamed tuned circuits as a coating.

Passive electrical marker for underground use and method of making

Hand held audio test probe

Growing community of inventors

Arlington, TX, United States of America

Sean Nash