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. 04, 1992
Filed:
Jul. 09, 1990
Gerald A Babuder, Mentor, OH (US);
Cajon Company, Macedonia, OH (US);
Abstract
A tube or pipe coupling joint structure comprises a pair of spaced flange members adapted for relative movement toward each other along a longitudinal axis. Each of the flange members has a face surface which is generally a surface of revolution about the longitudinal axis with the face surfaces on the respective flange members being located in opposed relationship to each other. A relatively smooth thin metal gasket is positioned between the opposed face surfaces of the flange members and each of the face surfaces comprises a sealing protrusion and a stop surface for limiting penetration of the sealing protrusion into the gasket. Moreover, each sealing protrusion is a circumferentially continuous flat and polished narrow sealing band of narrow width lying in a plane which is normal or deviates from normal to the longitudinal axis by no more than about 1 to 3 degrees. Each stop surface lies radially outward of the associated sealing band and is inclined at an angle in the range of 3 to 15 degrees relative to a plane normal to the longitudinal axis. The radially innermost portion of each stop surface is circumferentially continuous and is located axially behind the plane of the associated sealing band a predetermined distance.