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:
Dec. 05, 1989
Filed:
Oct. 19, 1988
Mannesmann AG, Duesseldorf, DE;
Abstract
A pressure vessel for the storage of gas has a bottom part, a cylindrical jacket and a head part with a neck, these parts are made of a corrosionproof stainless steel having up to 0.06% C, from 1.5 to 6% Mn, from 0.3 to 1% Si, from 16 to 25% Cr, from 4 to 18% Ni, from 0 to 4% Mb, from 0 to 0.35% nitrogen, from 0 to 0.25% Nb, all percentages by weight, the remainder being iron with the conventional low level impurities; following shaping, the interior surfaces are electrochemically polished; a valve with an adapter is provided for adapting dimensions of the valve to the neck, and a protective cap is threaded onto an upper portion of the head part; through welding or a non welded e.g. a threaded connection the adaptor is connected to the valve, and a nut or welding connection connects the adaptor to the neck.