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:
May. 17, 1977
Filed:
Jul. 29, 1974
Marc Anagnostidis, Chamalieres, FR;
Societe Metallurgique de Gerzat, Paris, FR;
Abstract
Bottles for compressed gases of AU6MGT with good mechanical properties and resilience, coupled with resistance to intercrystalline corrosion and to corrosion under tension. These bottles are obtained by drawing on a mandrel, in the absence of supports or, better still, by the combined drawing of an extruded blank, quenched and aged, comprising a cylindrical part and a base, followed by tapering of the end at a temperature of from 350.degree. to 400.degree. C, the propagation of heat towards the cylindrical part being prevented by means of a cooling ring, and finally by quenching in cold water until cooling is complete. The bottles obtained by this method are extremely safe to use and satisfy the most stringent requirements, in particular in the field of aviation, space vehicles and in every case where it is desired to combine minimal weight with good resilience and high resistance to corrosion.