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:
Mar. 08, 2011
Filed:
Jul. 08, 2008
Jacques Bernard, I′isle d′espagnac, FR;
Michel Emmanuel, Chazelles, FR;
Jacques Bernard, I′isle d′espagnac, FR;
Michel Emmanuel, Chazelles, FR;
Schneider Electric Industries SAS, Rueil-Malmaison, FR;
Abstract
The invention relates to an inductive proximity detector comprising an oscillating circuit excited with resonance by a generator and comprising a detection coil sensitive to a metal target to be detected, wherein the oscillating circuit comprises a reference coil arranged to present a mutual inductance with respect to the metal target to be detected that is substantially lower than that of the detection coil with respect to the metal target, the oscillating circuit comprises a switch able to assume two positions to connect each coil alternately, the detector comprises processing means connected to the coils making it possible to determine the presence or absence of the metal target close to the detector.