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. 23, 1984
Filed:
Nov. 01, 1982
John A George, Cincinnati, OH (US);
Xomox Corporation, Cincinnati, OH (US);
Abstract
A plug valve and method of making same are provided wherein such valve has lip inserts removably installed between an outer housing of the valve and diametrically opposed ports in a plastic sleeve which serves as a liner for the inside surface of the outer housing. The ports are aligned in a flow passage through the valve and a rotatable plug member is rotatably supported within the sleeve. The lip inserts serve the multiple purpose of protecting edge surfaces defining the ports of the sleeve against impingement of fluid flowing through the flow passage, holding the sleeve against rotation, preventing cold flow or extrusion of parts of the plastic sleeve in the flow passage and providing smooth uninterrupted flow of fluid through the valve flow passage.