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. 06, 2016
Filed:
Mar. 14, 2014
Luxfer Gas Cylinders Limited, Salford, GB;
Bernard Alain Jacques Chalandon, Gerzat, FR;
Romary Georges Marcel Daval, Beaumont, FR;
Warren Hepples, Nottingham, GB;
Luxfer Gas Cylinders Limited, , GB;
Abstract
A method of manufacturing a liner for use in a pressure vessel includes a cold drawing process that shapes a transition zone () part of an aluminum alloy liner shell (). The transition zone () links a thinner walled drum part () and a thicker walled end region (), which is at an open top of the shell. The transition zone () may be shaped by the cold drawing process such that it reduces susceptibility of the shell to fracture during removal from a cold drawing press and also redistributes shell material in preparation for a subsequent process in which a threaded neck is formed from the end region (). This process is particularly suited to processing harder aluminum alloy materials such as AA7060 or AA7032.