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. 22, 2019
Filed:
Oct. 17, 2013
Alstom Technology Ltd., Baden, CH;
Oana Aitken, Saint Egreve, FR;
Chakib Fnineche, Saint Pierre d'Allevard, FR;
ALSTOM TECHNOLOGY LTD, Baden, CH;
Abstract
Device for making and/or breaking a current including a pair of permanent contacts (), at least one of the contacts () being movable. At least one permanent contact () including a main portion () having a free end and an end protection portion () secured to the free end of the main portion (), designed to be in mechanical and electrical contact with the other permanent contact () only during an operation for opening or closing the pair. The end protection portion () is made of a single transition metal having a melting temperature that is strictly higher than that of the main portion () to which it is secured, or of an oxide or carbide of such a metal, or even of zinc oxide. For application in particular to high- or medium-voltage circuit breakers.