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:
Jun. 15, 1976
Filed:
Nov. 26, 1974
Frank C Hackman, Albertville, AL (US);
Lawrence F Luckenbill, Decatur, IL (US);
Joseph L Daghe, Decatur, IL (US);
Mueller Co., Decatur, IL (US);
Abstract
A gate valve structure for use in mains carrying fluids, the gate valve structure being provided with a casing having a through-bore and a chamber communicating with the through-bore and in which a gate member reciprocates between closed and opened positions of the valve. The valve casing is split into two body members on a plane normal to the axis of the through-bore and one of the body members is arranged to contain all of the functional parts of the valve, including the valve seat, gate member, and actuating means for the gate member. By such an arrangement, the valve seat surrounding the through-bore in the one body member may be easily machined by conventional machining methods and the internal surfaces of both body members may be easily treated to make them non-corrosive. The gate member is provided with a resilient seal member for seating on the valve seat, the seal member being held on the gate member by a retaining ring and the pressure applied by the retaining ring to the seal member may be adjusted at discrete circumferential positions so that the gate member may be adjusted to seat perfectly for a particular valve seat.