The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2000
Filed:
Sep. 15, 1998
Thomas H Bell, Adamstown, MD (US);
AETC Inc., San Diego, CA (US);
Abstract
A method and apparatus for detecting mostly-plastic mines having steel firing pins and copper igniter cups. A frequency spectrum is transmitted, and response signals from the metal components induced by resultant eddy currents are detected. The firing pin generates a response characterized by a first frequency that is in phase with the transmitted frequency, whereas the igniter cup generates a response characterized by a second frequency that is in quadrature with the transmitted frequency. Accordingly, the detected response can be compared to prestored response templates to determine what type of mine, if any, has been detected, with the use of two response frequencies and phase relationships enabling the discrimination of buried plastic mines from surrounding metal particles in the earth.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile