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. 13, 1984
Filed:
Dec. 27, 1982
James V Bonds, Houston, TX (US);
Paul R Orum, Stafford, TX (US);
ACF Industries, Incorporated, New York, NY (US);
Abstract
A reciprocating gate valve having an adjustable low stress stem connection structure (70) for connecting an operating stem (42) to a gate member (24). The connection structure includes a stem extension (78) formed on the bottom end of the operating stem (42) threadably receiving a collar (84) having an axial bore (86) coaxial with the stem (42) and extending therethrough receiving a gate extension (72) formed on the top end of the gate member (24). The collar (84) has a slot (96) extending generally perpendicular to the axial bore (86) in the direction of fluid flow through the valve. An adjusting nut (106) fits into the slot (96) and threadably engages the gate extension (72). The slot (96) permits movement of the nut (106) and gate member (24) relative to the longitudinal axis of the stem (42) in a direction generally parallel to the direction of fluid flow through to the gate valve. The nut (106) is accessible from the slot (96) for manual axial adjustment of the gate member (24) relative to the stem (42) so that the gate member port (30) can be aligned with the flow passages. The stem extension (78) has an annular shoulder (116) to provide a metal-to-metal seal with the bonnet (36) in the closed position of the gate valve.