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:
Jul. 02, 1991
Filed:
Apr. 18, 1989
Applicant:
Inventor:
Michael A Reed, Portsmouth, NH (US);
Assignee:
Environmental Products Corporation, Fairfax, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01R / ; G01D / ; G07F / ;
U.S. Cl.
CPC ...
324236 ; 324234 ; 324262 ; 194319 ;
Abstract
A device for discriminating metal in an object is provided including a sense coil and related circuitry, with variations in the self inductance of the sense coil being measured as the object is passed substantially through the center of the coil.