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:
Apr. 20, 2010
Filed:
Sep. 09, 2005
Applicant:
Allan Westersten, Georgetown, CA (US);
Inventor:
Allan Westersten, Georgetown, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/72 (2006.01); G01V 3/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A pulse-induction type metal detector that reliably identifies ferrous and non-ferrous targets in soils with varying mineral content. The influence of the background signals from the soil is removed continuously, without the need for manual adjustment of controls by the operator, when the soil mineralization changes. The background signals are removed without affecting the sensitivity of the detector to metallic targets and the background signal removal process does not make the detector insensitive to targets whose time constant coincides with that of the soil.