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:
Mar. 22, 2011
Filed:
Aug. 10, 2010
Osamu Takahara, Chiyoda-ku, JP;
Tae Hyun Kim, Chiyoda-ku, JP;
Tomotaka Yano, Chiyoda-ku, JP;
Akihiko Imagi, Chiyoda-ku, JP;
Osamu Takahara, Chiyoda-ku, JP;
Tae Hyun Kim, Chiyoda-ku, JP;
Tomotaka Yano, Chiyoda-ku, JP;
Akihiko Imagi, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A switchgear apparatus is provided in which an impact induced by a close operation is mitigated, featuring space saving and high reliability with low costs. The switchgear apparatus includes a switching unitthat is composed of a fixed electrodeand a movable electrode; a movable shaftthat is extended from the movable electrode; an operating mechanismthat produces driving force and transfers the driving force to the movable shaft; a switching-unit holderthat holds the switching unitand the movable shaftthereinside; and a holder supporting unitthat has a fixing plane so as to fix the switching-unit holderthereonto. The switchgear apparatus is arranged in such a manner that the holder supporting unitserving as the fixing plane is constituted of a plurality of plates layered in the axial direction along the movable shaft. In a case of the close operation, because kinetic energy in the overall system is consumed by the friction generated between the layered plates owing to distortion of the layered plates, energy that allows the movable electrodeto bounce back and forth is lowered, so that it is possible to shorten a chattering time.