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. 23, 2003
Filed:
Feb. 26, 2002
Hubert Spiegel, Oberentfelden, CH;
Alstom, Paris, FR;
Abstract
The electric circuit-breaker includes an interrupting chamber with at least one moving contact inside the chamber, the moving contact being actuated by means of a spring-loaded mechanical control mechanism so as to open or close the circuit-breaker. The control mechanism includes at least one first spring exerting a force tending to move the moving contact to open the circuit-breaker, and a second spring exerting a force tending to move the moving contact to close the circuit-breaker while loading the first spring. An additional spring is provided for exerting an additional force that is added to the force exerted by the first spring at the beginning of circuit-breaker opening. The additional spring thus accumulates some of the kinetic energy from the moving contact at the end of opening.