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:
May. 05, 1998
Filed:
Aug. 14, 1996
David Lamar Bowers, Cookeville, TN (US);
Robert Joseph Brown, Cookeville, TN (US);
Royce Chaffin, Baxter, TN (US);
Donnie Ray Hammock, Cookeville, TN (US);
Gerald Patrick McDermott, Cookeville, TN (US);
The Duriron Company, Inc., Dayton, OH (US);
Abstract
An adjustable ball valve assembly having a vertically tapered chamber and an adjustment mechanism is provided. The adjustable ball valve includes a vertically tapered chamber, a ball disposed within said chamber, a valve stem connected to said ball, seat members, which include a rigid, solid support frame encapsulated in a polymeric material, supporting and sealing the ball and having a vertical taper corresponding to the chamber taper, locking members to prevent horizontal or rotational movement of the seat members and an adjustment mechanism for adjusting the seat members vertically within the chamber. The seat members are encapsulated by means of an injection molding process. The process includes providing an injection mold having, among other features, pins which position the support frame to provide for even application of the polymeric material to the support frame.