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:
Aug. 17, 2010
Filed:
Feb. 10, 2006
Hiroyuki Kakisako, Tokyo, JP;
Hitoshi Ito, Tokyo, JP;
Kozo Maeta, Tokyo, JP;
Masanori Kawamura, Tokyo, JP;
Shigeki Koumoto, Tokyo, JP;
Hiroyuki Kakisako, Tokyo, JP;
Hitoshi Ito, Tokyo, JP;
Kozo Maeta, Tokyo, JP;
Masanori Kawamura, Tokyo, JP;
Shigeki Koumoto, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A movable contacting device in a circuit breaker comprises: a crossbar linked with the opening/closing mechanism and carried so as to pivot cooperatively with the opening/closing mechanism; a movable contact arm engaged, so as to cooperational with the crossbar, with a shaft fitted into a mutually opposing recesses in the crossbar; and a movable contact arm support fixed to the case accomodating the opening/closing mechanism and having mutually opposing through-holes through which the shaft is passed; and the movable contact being configured so that the movable contact slides between surfaces of movable contact arm support having the mutually opposing through-holes; and the construction of a single-pole portion of the movable contact arm is constituted by arranging in parallel two movable contact arm members each having a movable contact at one end, and in a shaft-supporting portion at the other end, an elastic member is sandwiched between the two movable contact arm members. With this arrangement, circuit breakers provided with a movable contacting device that is small in size and stable in contact resistance can be made available.