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:
Nov. 25, 2003
Filed:
Nov. 25, 2002
Steven A. Fischer, Savage, MN (US);
Michael A. Stein, Eden Prairie, MN (US);
Jeffrey C. Kubesh, Jordan, MN (US);
Todd J. Edlund, Savage, MN (US);
James Donoho, Golden Valley, MN (US);
Eric Soderstrom, Lauderdale, MN (US);
Michael Stoick, Prior Lake, MN (US);
Entegris, Inc., Chaska, MN (US);
Abstract
A coupling ideally suited for sealing between components such as a fluoropolymer valve body ( ) and a fluoropolymer manifold ( ) or for coupling tubing end portions, utilizes structure on said components for defining the sealing surfaces. In a preferred embodiment, the coupling comprises a male protruding portion ( ), a recessed female receiving portion ( ), and a clamping means. The clamping means ( ) has an inner threaded surface for engaging a correspondingly threaded portion of the male protruding portion. The male protruding portion is shaped, generally, as a converging rounded conical frustum ( ) having an exterior surface, a primary sealing surface, a first stop surface ( ), a second cooperating stop surface, and a fluid flow duct. The fluid flow duct is preferably concentrically positioned. The recessed portion has a circular perimeter, an inwardly projecting annular ring ( ), a first cooperating stop surface, a second stop ( ) surface, and a fluid flow duct. The male protruding portion forms a seal by confronting the primary sealing surface and the annular sealing ring.