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. 11, 2007
Filed:
Apr. 28, 2005
Thomas Ammann, Munich, DE;
Thomas Ammann, Munich, DE;
Linde Aktiengesellschaft, Wiesbaden, DE;
Abstract
A protective gas supply device for on-site supply of workplaces is provided, in which a liquid argon reservoir, a liquid oxygen reservoir or a liquid carbon dioxide reservoir, and a helium supply are connected to first and second mixers supplying gas to site workplaces. The liquid argon reservoir and the liquid oxygen or carbon dioxide reservoir are connected to the feed side of the first mixer via lines, and the discharge side of the first mixer is connected to at least one workplace and to the feed side of a second mixer. The feed side of the second mixer also receives helium from the helium supply, and the discharge side of the second mixer is connected to at least one additional workplace. The invention permits economical mixing and supply of variable protective gas mixtures to work stations in an on-site environment.