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:
Jun. 27, 1989
Filed:
Oct. 26, 1987
Applicant:
Inventor:
Bruno Weisshaupt, Frauenfeld, CH;
Assignee:
Baumer Electric AG, Frauenfeld, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ; G01N / ; G01B / ;
U.S. Cl.
CPC ...
307308 ; 307309 ; 307580 ; 307227 ; 328-5 ; 331 65 ; 324207 ; 324234 ;
Abstract
The process for the detection of an eddy current-induced body in the action range of an inductive resonant circuit component (L) uses in place of a continuous operation and detection of the current change, a network containing a resonant circuit (L,C) is briefly excited with an electric function and the system response of the network is evaluated. The proximity sensor is constituted by an oscillatable network (L,C) operated on the input side with a function generator and, on the output side, the system response is investigated with an evaluation circuit.