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:
Mar. 06, 1984
Filed:
Aug. 23, 1982
Ralph W Vanderburg, Longview, TX (US);
Axelson, Inc., Longview, TX (US);
Abstract
A gate valve having an inlet and an outlet flow-way with a chamber having a gate inbetween and with counterbores at the end of the flow way adjacent the chamber is disclosed. Each counterbore telescopically receives a seat member. A sealing system for each of the gate seat members which permit certain liquid communication to the valve body cavity is disclosed. Each seal system includes seals on all sides of the gate seat member except the inwardly facing cylindrical walls. Each seal is disposed on an annular groove cut in the outer periphery surface of the end of the gate seat member. The seal on the upstream side of the valve body is located adjacent to the inwardly facing cylindrical wall. The seal between the gate seat and the gate is located near the valve body cavity. The seal on the outwardly facing cylindrical wall is adjacent to the valve body flow-way counterbores.