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:
Feb. 25, 2014
Filed:
Nov. 14, 2011
Hans Schellekens, La Terrasse, FR;
Serge Olive, Saint Paul de Varces, FR;
Jean Pierre Gauthier, Vourey, FR;
Hans Schellekens, La Terrasse, FR;
Serge Olive, Saint Paul de Varces, FR;
Jean Pierre Gauthier, Vourey, FR;
Schneider Electric Industries SAS, Rueil-Malmaison, FR;
Abstract
A device for detecting vacuum loss in a vacuum breaking apparatus that includes an enclosure having a first part at least partially of insulating material, closed at its opposite ends by end-plates, and housing fixed and mobile electrodes. A second part of the enclosure is insulating material at least partially around the first part, this second part is an over-molding of electrically grounded conductive shielding at least a part of its outer surface. This first strip of over-molding faces both the first part and one of the electrodes, thereby providing two capacitances in series, namely, a vacuum capacitance between the electrode and the inner surface of the first part, and a solid capacitance between the inner surface of the first part and the first strip, and means for measuring change of current value in the first strip, which corresponds to a vacuum loss inside a vacuum breaking apparatus.