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:
Dec. 05, 2006
Filed:
Feb. 20, 2004
Hiroyuki Imanishi, Osaka, JP;
Akinobu Yoshimura, Osaka, JP;
Takeshi Ariyoshi, Osaka, JP;
Tamio Tsurita, Osaka, JP;
Yasuhiko Nishi, Osaka, JP;
Hiroyuki Imanishi, Osaka, JP;
Akinobu Yoshimura, Osaka, JP;
Takeshi Ariyoshi, Osaka, JP;
Tamio Tsurita, Osaka, JP;
Yasuhiko Nishi, Osaka, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
A direct current relay includes a plurality of contact pairs, and a plurality of magnets (). Each of the plurality of contact pairs is configured having contacts () with contact regions () disposed to allow opening and closure with respect to each other. The plurality of contact pairs are disposed such that the plurality of magnets () are disposed on one straight line, and the contact pairs are located between the magnets () on a line identical to the straight line. Each of the plurality of magnets () is provided to distort an arc generated between contacts () on an occasion of relay cut off in a direction crossing the straight line. Even if a backward current flows, arcs will not interfere with each other, allowing extinguishing in a short time. Accordingly, a direct current relay can be obtained, capable of cutting off a high direct current voltage in a short time even on an occasion of backward current while minimizing the number of magnets and allowing down-sizing with a simple structure.