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:
Aug. 17, 2010
Filed:
Mar. 28, 2006
Akihiro Shakagori, Nobeoka, JP;
Yukinobu Sato, Nobeoka, JP;
Akihiro Shakagori, Nobeoka, JP;
Yukinobu Sato, Nobeoka, JP;
Asahi Organic Chemicals Industry Co., Ltd., Miyazaki, JP;
Abstract
A butterfly valve includes a seat ring fitted to an inner peripheral surface of a hollow cylindrical valve body, and a discal valve disc in which a shaft is mounted. The shaft is rotatably mounted in through-holes of the seat ring. An annular protrusion having a first tapered surface inclined at 20°-40° with respect to the valve axis is formed at the peripheral edge of each of the through holes of the seat ring. A bowl-shaped annular depression at each end of the valve shaft hole includes a second tapered surface inclined at 25°-45° with respect to the axis and engaged with a respective first tapered surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile