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:
Jan. 04, 1994
Filed:
Mar. 16, 1992
Applicant:
Inventor:
Thomas Seitz, Zug, CH;
Assignee:
Landis & Gyr Betriebs AG, Zug, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01R / ; G01R / ;
U.S. Cl.
CPC ...
324239 ; 324253 ;
Abstract
A device is disclosed for detecting the presence and/or determining the configuration of a magnetic substance. The device includes a magnetic circuit having a magnetic core and an air gap. Coupled to the magnetic circuit are an excitation coil, for periodically driving the magnetic circuit into saturation, and a measurement coil, for measuring the effective appearing permeability of the magnetic circuit in the presence of the magnetic substance.