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. 04, 2003
Filed:
Dec. 07, 2001
Reynald Marin-Pache, Biviers, FR;
Alain Bechard, Grenoble, FR;
Denis Perrin, St Nicolas de Macherin, FR;
Abstract
A drive mechanism of a circuit breaker comprises a master mechanism and a slave mechanism. The master mechanism is composed of an energy storage sub-assembly comprising an energy storage spring driven by a loading shaft, and an opening and closing sub-assembly driving a switching shaft. The master mechanism is controlled by a closing latch and an opening latch. The slave mechanism comprises a closing assistance spring connected to the loading shaft by means of a loading cam and a multifunctional lever. Rotation of the loading shaft loads the assistance spring and commands relaxation thereof. The assistance spring drives the switching shaft by means of an arm operating in conjunction with a crank in the form of a hook. At the end of closing travel, the arm uncouples from the crank and withdraws so as not to hamper opening of the mechanism. The assistance mechanism enables the energy delivered globally by the drive mechanism to be increased.