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:
Nov. 15, 2011
Filed:
Dec. 02, 2008
Hideaki Shimazu, Tokyo, JP;
Hiroyuki Nakagawa, Tokyo, JP;
Hitoshi Sadakuni, Tokyo, JP;
Daisuke Fujita, Tokyo, JP;
Tatsuya Hayashi, Tokyo, JP;
Hideaki Shimazu, Tokyo, JP;
Hiroyuki Nakagawa, Tokyo, JP;
Hitoshi Sadakuni, Tokyo, JP;
Daisuke Fujita, Tokyo, JP;
Tatsuya Hayashi, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A contact device that has decreased contact pressure against a conductor caused by elastic repulsion force of a spring contact, to thereby enable suppressing friction and reducing electrical-resistance. The contact device includes first and second conductors arranged on a same axis and moved in their axis direction to fit to each other, a spring contact fitted to an installation groove of the second conductor, and a conductive contact piece arranged between a fitting face of the first conductors and the spring contact, so that electric current flows in a pair of conductors through the conductive spring contact and the conductive contact piece. The spring contact has an elliptical cross section formed of a bare wire being spirally wound with tilting against the winding axis thereof, and the contact piece is divided into a plurality of segments in a direction of the winding axis of the spring contact, and configured to line-contact or face-contact the other of the conductors.