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:
Sep. 22, 1998
Filed:
Dec. 06, 1996
Douglas P Goulet, Big Lake, MN (US);
Adelbert L Schurman, New Hope, MN (US);
IMI Cornelius Inc., Anoka, MN (US);
Abstract
The present invention comprises a tubing end fitting and a method of forming thereof wherein the fitting is formed out of the tubing itself. In a first step, the tubing end is compressed in a linear direction and shortened forming a first annular ridge extending around the tubing spaced from the end of the tube by a small tube portion. At the same time, the small tube portion diameter is reduced slightly. The small tube end portion is again compressed slightly in a linear direction initiating the formation of a second annular ridge spaced from the first annular ridge, while at the same time again slightly reducing the diameter of the remaining tubing end portion. In a third step the tubing end is again compressed in a linear direction completing the formation of the second annular ridge. In a fourth step the remaining tube end portion is flared outwardly forming an o-ring receiving groove between the second annular ridge and the tube end.