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. 18, 2008
Filed:
Feb. 23, 2006
Koichi Ochiai, Chiyoda-ku, JP;
Takashi Tsumura, Chiyoda-ku, JP;
Kazuo Abe, Chiyoda-ku, JP;
Isamu Warashina, Chiyoda-ku, JP;
Koichi Ochiai, Chiyoda-ku, JP;
Takashi Tsumura, Chiyoda-ku, JP;
Kazuo Abe, Chiyoda-ku, JP;
Isamu Warashina, Chiyoda-ku, JP;
Yamatake Corporation, Tokyo, JP;
Abstract
A pressure switch includes an external force transmission mechanism for separating a cover from a housing. The cover and the external force transmission mechanism defines a first pressure chamber, and the housing and the external force transmission mechanism defines a second pressure chamber. In the second pressure chamber, a movable piece having first and second movable members arranged opposite to each other and one or more fixed contacts are disposed. The first and second movable members are connected to each other via a flat spring. A contact is disposed on the second movable member and functions as a movable contact. The external force transmission mechanism applies an external force to the first movable member to displace the first movable member, and the second movable member is reversed at the operating point of the first movable member, so that the movable contact is brought into contact with the fixed contact.