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. 10, 2015
Filed:
Mar. 08, 2011
André Cimala, Villeurbanne, FR;
Gwenaël Marquezin, Villeurbanne, FR;
André Cimala, Villeurbanne, FR;
Gwenaël Marquezin, Villeurbanne, FR;
Alstom Technology Ltd., , CH;
Abstract
An electric switch for application to high- and very high-voltage circuit breakers and switches comprising a flexible toroidal helical spring () placed in a groove of a control rod () carrying a movable resistance-insertion contact (), and springs () placed about the movable resistance-insertion contact to cause the springs to be compressed until a certain value is reached, at which value the movable resistance-insertion contact causes the flexible toroidal helical spring () to deform under pressure enabling the movable resistance-insertion contact () to be withdrawn. Among other uses, the switch is suitable for use in a resistance-inserting device that does not need additional mechanical moving parts. For application to high- and very high-voltage circuit breakers and switches.