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:
Feb. 11, 2020
Filed:
Jan. 27, 2015
Luxembourg Patent Company S.a., Lintgen, LU;
Stephan Sellen, Wehingen, DE;
Philippe Schmitz, Steinsel, LU;
Luxembourg Patent Company S.A., Lintgen, LU;
Abstract
The invention is directed to a method for improving the fatigue behavior of the body () of a gas valve, the body comprising at least two bores () and at least one bore intersection () defining an internal volume; wherein the method comprises the following step: subjecting the internal volume to an autofrettage by applying a pressure of comprised between 100 MPa and 500 MPa by means of a liquid.. The invention is also directed to a gas valve body () comprising at least two bores () and at least one bore intersection () defining an internal volume with an internal wall; wherein the internal wall is treated by autofrettage resulting in compressive stresses at the intersection or at least one of the intersections.