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:
Dec. 07, 2010
Filed:
Feb. 12, 2008
Applicants:
Olaf Machul, Freiburg, DE;
Sascha Thoss, Duisburg, DE;
Inventors:
Olaf Machul, Freiburg, DE;
Sascha Thoss, Duisburg, DE;
Assignee:
Sick AG, Waldkirch/Breisgau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B 7/14 (2006.01); G01R 35/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to an inductive proximity sensor with a sensor element which includes a resonant circuit which provides an output signal which depends on the damping by an electrically conductive object. In accordance with the invention, the inductive proximity sensor has a ΣΔ modulator for the evaluation of an output signal of the resonant circuit. The invention furthermore relates to a method for the determination of the presence and/or of the spacing of a metallic object with the help of an inductive proximity sensor.