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:
Jan. 09, 1996
Filed:
Feb. 08, 1995
Jiro Kamezawa, Higashi-Osaka, JP;
Tomoe Technical Research Company, Osaka, JP;
Abstract
A seat ring is resiliently fitted into upper and lower main bodies of a butterfly valve divided in a horizontal direction of piping so as to prevent a fluid from being leaked from the butterfly valve. The seat ring has a cylindrical portion for storing a valve body of the butterfly valve and constructed such that both end faces of the cylindrical portion respectively come in contact with two flanged annular adapters of the butterfly valve; two valve rod holes opposed to each other and formed in the cylindrical portion such that a valve rod for pivotally supporting the valve body extends through the valve rod holes: two first projecting portions having an annular shape and a rectangular shape in cross section and respectively projecting from an outer circumferential face of the cylindrical portion onto an outer side in a diametrical direction at both end edges of the cylindrical portion: a first chamfer formed in the range of a first angle around each of the valve rod holes: and a second chamfer formed in the range of an angle except for the first angle. A third chamfer is gradually connected between the first and second chamfers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile