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:
Jun. 12, 2007
Filed:
Aug. 29, 2006
Yoshiro Sano, Okayama, JP;
Tetsuya Fukuda, Okayama, JP;
Yoshiro Sano, Okayama, JP;
Tetsuya Fukuda, Okayama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A movable contact is made of a resilient and electrically conductive thin metal plate so that a depressing operation onto the top thereof allows turning over of the central section thereof. The movable contact is shaped like a dome bowing upward and open downward, and includes at least three projections radially placed at the center where the turn-over occurs. A top view of the projection shows a long and narrow shape extending in the radial direction. The downward protruding amount of the respective projections increases along the radial direction from the center to the outer side, and the respective projections each have a flat face having a given width along the circumferential direction. When the movable contact is in operation, the movable contact touches the object at an outer section of the flat face and along the circumferential direction.