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. 29, 1977
Filed:
Mar. 01, 1976
Applicant:
Inventor:
Takayoshi Uno, Osaka, JA;
Assignee:
Tomoe Technical Research Company, Osaka, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251306 ; 1374542 ; 251152 ;
Abstract
A butterfly valve comprises a valve body, a valve seat, a valve stem, a valve member and sealing assemblies in which the central portion of a seat face of the valve seat is raised higher than both of its side portions and the diameter of the valve seat at the central raised portion is smaller than that of the valve member whereby a perfect seal can be achieved.
Quick Actions:
Uno, Takayoshi. (1977). Butterfly valve (U.S. Patent No. 4014511). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4014511
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile