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:
Apr. 29, 2008
Filed:
Oct. 19, 2005
Hisashi Nishikawa, Ika-gun, JP;
Hiroyuki Kosaka, Tsuruga, JP;
Yoshiyuki Nakade, Tsuruga, JP;
Takao Matsui, Obama, JP;
Tetsuya Koma, Tsuruga, JP;
Makoto Nagahara, Hirakata, JP;
Hiroyuki Takeshita, Kobe, JP;
Hisashi Nishikawa, Ika-gun, JP;
Hiroyuki Kosaka, Tsuruga, JP;
Yoshiyuki Nakade, Tsuruga, JP;
Takao Matsui, Obama, JP;
Tetsuya Koma, Tsuruga, JP;
Makoto Nagahara, Hirakata, JP;
Hiroyuki Takeshita, Kobe, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A switch provided with a fixed contact and a movable contact coming into contact with each other and separating from each other. The surface of at least one of the fixed contact and the movable contact is provided with a plurality of recesses whose edges are overlapped with each other, and also provided with a plurality of projections. The projections formed on the contact surface have sharp-pointed tips which can break an oxide film or the like if it is formed on the contact surface, thereby achieving stable contact.