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:
Nov. 09, 1999
Filed:
Mar. 27, 1998
Timothy Chris, Folsom, CA (US);
David A Le Febre, Camino, CA (US);
UOP LLC, Des Plaines, IL (US);
Abstract
A displaceable purifier body improves the delivery of high purity gases from gas tanks or cylinders by providing a large flow area for filling the cylinder or tank with gas while preventing contamination of gases during the filling procedure and by automatically engaging the purifier for purification when withdrawing gas from the tank or cylinder. The purifier body or a separate seal body has an arrangement for reciprocal movement between a filling position wherein the gas entering the cylinder by-passes the purifier body and an engaged position wherein the purifier body moves towards the cylinder head assembly to prevent by-passing of exiting gases around the purifier. This arrangement offers little restriction to gas flow entering the cylinder and allows rapid filling of cylinders to make gas delivery more economical. The arrangement can also provide an indicator showing positive engagement of the purification system during gas withdrawal and a simple method for manually disengaging the purifier to allow exiting gas to bypass the purifier when desired.