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:
Jan. 27, 2009
Filed:
Nov. 30, 2005
Kazuki Ishikawa, Utsunomiya, JP;
Yoshio Saito, Iwanuma, JP;
Toshiaki Kamo, Iwanuma, JP;
Katsumi Sahoda, Tsurugashima, JP;
Osamu Ichikawa, Takasaki, JP;
Kouji Miyano, Utsunomiya, JP;
Tatsuya Sugawara, Kawachi-gun, JP;
Kazuki Ishikawa, Utsunomiya, JP;
Yoshio Saito, Iwanuma, JP;
Toshiaki Kamo, Iwanuma, JP;
Katsumi Sahoda, Tsurugashima, JP;
Osamu Ichikawa, Takasaki, JP;
Kouji Miyano, Utsunomiya, JP;
Tatsuya Sugawara, Kawachi-gun, JP;
Keihin Corporation, Tokyo, JP;
Abstract
A solenoid-operated cutoff valve for use with fuel cells has a movable member disposed in a guide housing for displacement upon energization of a solenoid. When the movable member is displaced, a pilot valve is unseated from a pilot valve seat. A fluid in a communication chamber flows through a pilot passage into an output port. The communication chamber is divided into a first communication chamber and a second communication chamber by a diaphragm. Under a pressure difference developed between the first communication chamber and the second communication chamber, a main valve of a valve head is unseated from a valve seat of a valve housing, opening the solenoid-operated cutoff valve.