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:
May. 24, 1977
Filed:
Mar. 24, 1976
Applicant:
Inventors:
Yoshinori Manki, Nara, JA;
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 ; 251368 ;
Abstract
A butterfly valve comprises a valve body, a valve seat, a valve stem, a valve member and sealing assemblies. The valve seat has three layers such as a first, a second and a third layers which are formed from hard synthetic resin, resilient material and fluororesin respectively. An effective seal can be achieved by providing an inwardly convex contour on the inner peripheral surface of the valve seat.
Quick Actions:
Manki, Yoshinori. (1977). Butterfly valve (U.S. Patent No. 4025050). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4025050
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile