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:
Sep. 02, 2008
Filed:
Oct. 27, 2004
Masahiro Fushimi, Tokyo, JP;
Susumu Takahashi, Tokyo, JP;
Kazumasa Watanabe, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The circuit breaker of this invention comprises a pair of stationary contactorswhich are respectively provided with stationary contacts, a movable contactorwhich includes a pair of movable contactsand which is capable of bridging both the stationary contactors, a switching mechanism sectionwhich operates when an overcurrent has flowed through the stationary contactors, a crossbarwhich separates the movable contactor from the stationary contactors upon the operation of the switching mechanism section, a contact pressure springwhich is engaged with the crossbar at one end and with substantially the central part of the movable contactor at the other end and which urges the movable contactor toward the stationary contactors, and arc extinction chamberswhich are respectively disposed near both the end parts of the movable contactor and which extinguish an arc struck at the separation of the movable contactor from the stationary contactors.