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:
Jul. 21, 1992
Filed:
Feb. 26, 1991
Ralph G Portis, Highland Park, IL (US);
Midland Manufacturing Corp., Skokie, IL (US);
Abstract
An angle valve has a side port bore with a cylindrical inner seal surface chamfered at its outer end and a removable port fitting receivable in the port bore and having a cylindrical outer seal surface in which are formed two axially spaced-apart circumferential grooves, each generally rectangular in transverse cross section. Two seal rings of circular cross section are respectively received in the grooves so as to project radially outwardly therefrom beyond the other seal surface of the fitting. Each ring has a transverse cross-sectional area substantially equal to that of its associated groove so that when the fitting is disposed in the bore the rings are deformed to substantially fill the grooves. The chamfer cooperates with the fitting when inserted in the bore to define an annular cavity which communicates with one of the grooves to form an extension thereof so that the thus-extended groove has a transverse cross-sectional area substantially equal to that of the associated ring so as to be filled thereby when deformed.