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:
Mar. 14, 1995
Filed:
Jul. 26, 1994
Applicant:
Inventors:
Assignee:
Yamamoto Suiatu Kogyosho Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F16K / ;
U.S. Cl.
CPC ...
417392 ; 13759618 ; 251 611 ; 251212 ;
Abstract
A valve operating mechanism which opens and closes a passage communicating to a cavity by contraction and restoration of a packing, with little mechanical movable parts for the opening/closing operation.