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. 24, 2008
Filed:
Mar. 01, 2006
Applicants:
Akinori Masamura, Komaki, JP;
Shigeru Osugi, Komaki, JP;
Inventors:
Akinori Masamura, Komaki, JP;
Shigeru Osugi, Komaki, JP;
Assignee:
CKD Corporation, Komaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 1/00 (2006.01); F16K 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A chemical liquid valve is arranged such that a diaphragm coupled to a piston rod is brought into/out of contact with a valve seat provided between an inlet port and an outlet port. To achieve a chemical liquid valve providing stable sealing strength, the diaphragm includes an engagement part whose top end is formed in semispherical shape, which is inserted and engaged in a recess of the piston rod so that the engagement part of the diaphragm comes into point contact with an inner wall of the recess of the piston rod. Thus, the piston rod swingably holds the diaphragm.