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:
Oct. 31, 2023
Filed:
Jul. 11, 2018
Valqua, Ltd., Tokyo, JP;
Koji Sato, Gojo, JP;
VALQUA, LTD., Tokyo, JP;
Abstract
Provided is a metal gasket, which is used for connecting pipes to each other in a thermal power plant, a nuclear power plant, a steam engine in a steam turbine ship, an oil refinery line, a petrochemical industry process line, a semiconductor manufacturing line or the like, and which is characterized in that a V-shaped circumferential grooveis provided on the outer circumferential surface of the metal gasket, the ratio (circumferential groove depth A/horizontal length B) of the depth A of the circumferential grooveand the horizontal length B in a cross section of the metal gasketis 0.1 to 0.95, and the notch angle of the V-shaped circumferential grooveis 30° to 120°.