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. 14, 2006
Filed:
May. 25, 2004
Tetsuya Mori, Shiga-ken, JP;
Takuya Yamazaki, Kyoto, JP;
Kazuhiro Tsutsui, Nagano-ken, JP;
Susumu Sato, Iida, JP;
Tetsuya Mori, Shiga-ken, JP;
Takuya Yamazaki, Kyoto, JP;
Kazuhiro Tsutsui, Nagano-ken, JP;
Susumu Sato, Iida, JP;
OMRON Corporation, Kyoto, JP;
Abstract
A contact construction and switching device for DC loads that can be repeatedly used while minimizing problems such as cut-off failure, locking and deposition due to an abnormal continuation of an arc between the contacts, burning and destruction of the contacts, and an increase in contact resistance has a construction that includes a stationary contact and a movable contact that are opposite to each other, and a magnetic unit which applies a magnetic field orthogonal to the moving direction of the movable contact. In the contact construction, the anode-side contact is made of an AgSnO-based alloy which contains at least Ag and SnO, and the cathode-side contact is made of one of an AgNi-based alloy which contains at least Ag and Ni and an AgCuO-based alloy which contains Ag and CuO. The switching device has the above-mentioned contact construction.