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. 02, 2004
Filed:
Jul. 17, 2001
Ritsu Yamamoto, Kadoma, JP;
Tsutomu Shimomura, Kadoma, JP;
Riichi Uotome, Kadoma, JP;
Hideki Enomoto, Kadoma, JP;
Takehiko Toguchi, Kadoma, JP;
Mamoru Tateno, Kadoma, JP;
Yoshiyuki Iwami, Obihiro, JP;
Matsushita Electric Works, Ltd., Kadoma, JP;
Abstract
A contact apparatus is provided having a permanent magnet disposed in a region where a fixing contact point is mounted to a fixing contact and a movable contact to which a movable contact point is mounted. An arc generated between both the contact points is moved in a lateral direction by the magnetic force of the permanent magnet and stretched. An arc-extinguishing member which is heated by the arc for generating arc-extinguishing gas is provided such as to surround the fixing contact point and the movable contact point.