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:
Feb. 10, 2009
Filed:
Dec. 25, 2003
Kenro Yoshino, Nobeoka, JP;
Akihiro Tsuzuki, Nobeoka, JP;
Kenro Yoshino, Nobeoka, JP;
Akihiro Tsuzuki, Nobeoka, JP;
Asahi Organic Chemical Industry Co., Ltd., Miyazaki, JP;
Abstract
A constant flow valve has a chamber () provided therein with a first diaphragm () having a valve member (), a second diaphragm () and a third diaphragm (). The chamber is divided into a first pressure chamber (), a second valve chamber (), a first valve chamber () and a second pressure chamber (). The first pressure chamber has means for applying a constant inward force to the second diaphragm, and the second pressure chamber has means for applying a constant inward force to the third diaphragm. The first valve chamber is communicated with an inlet channel, the second valve chamber has a valve seat () corresponding to the valve member, and the valve seat divides the chamber into a bottom valve chamber () communicating with the first valve chamber through a communication hole formed in the first diaphragm and a top valve chamber () communicating with an outlet channel.