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. 16, 1993
Filed:
Apr. 08, 1992
Applicant:
Inventors:
Ryutaro Nishimura, Osaka, JP;
Michio Yamaji, Osaka, JP;
Hirokatsu Maeda, Osaka, JP;
Nobukazu Ikeda, Osaka, JP;
Kenji Yamamoto, Osaka, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251331 ; 251 62 ; 251368 ;
Abstract
A fluid flow controller comprising a flow passage which is opened and closed by the flexing of a diaphragm secured at its periphery characterized in that the diaphragm is a laminate of a plurality of metal diaphragms and in that friction reducing material is provided between the diaphragms.