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:
Nov. 09, 1982
Filed:
Oct. 08, 1980
Applicant:
Inventor:
Eduard Hiltebrand, Schaffhausen, CH;
Assignee:
George Fischer Ltd., , CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251306 ; 251308 ;
Abstract
A butterfly valve includes a gasket on the pivotable member which has a peripheral ring portion and two end rings which are concentric to the shaft supporting the pivotable member, each end ring having a flange held under spring pressure between the pivotable member and bushings on the shaft ends. The gasket thus seals the valve against leakage to the outside and to the shaft.
Hiltebrand, Eduard. (1982). Butterfly valve (U.S. Patent No. 4358086). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4358086
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile