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:
Aug. 26, 1980
Filed:
Jan. 22, 1979
Applicant:
Inventors:
Toru Numaguchi, Tokyo, JP;
Katuyoshi Murabayashi, Yokohama, JP;
Assignee:
Daicel Ltd., Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01B / ; F16J / ;
U.S. Cl.
CPC ...
9210 / ; 92 9 / ;
Abstract
A pressure regulating diaphragm comprises a central base plate section in the form of a hard disc, a peripheral sealing section having the form of a ring located concentrically with said plate section and an intermediate section located between said peripheral sealing section and said central base plate section, said intermediate section consisting of a film having a thickness of from 10 to 100 microns and made of a plastic resistant to chemicals and defining a deformable, flexible portion, whereby a desired shape can be obtained therein.