Luxfer Gas Cylinders Limited

Warren Hepples

Graeme Antony Maisey

Ian Dera

Adrian Nicholas Basford

Michael Raymond Clinch

Andrew John Norwood

Bernard Alain Jacques Chalandon

Romary Georges Marcel Daval

Romary Georges Daval

Bernard Alain Chalandon

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.

Method of manufacturing pressure vessel liners

Gas cylinder

Gas cylinder for medical purposes

Growing community of inventors

East Bridgford, United Kingdom

Warren Hepples