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:
Oct. 27, 1998
Filed:
May. 30, 1997
Andre Micke, Summit, NJ (US);
Lesli B Cosey, West Chicago, IL (US);
The BOC Group, Inc., New Providence, NJ (US);
Abstract
A system for filling gas cylinders with a gas mixture having a desired gas composition which includes (a) a gas conduit whose inlet end is connected to two or more gas component supply lines, each provided with a flow adjustment device, and whose outlet end is connected to a gas cylinder filling system, and which is equipped with a gas analyzer, a cumulative gas flow measuring device and, upstream of the gas analyzer, a gas mixing device; and (b) a controller which has provision for receiving signals from the flow measuring device and the gas analyzer and for sending signals to each flow adjustment device. A method of filling gas cylinders with given quantities of the gas mixtures which includes cumulatively measuring the quantity of gas flowing through the conduit, periodically analyzing the gas mixture flowing through the conduit, periodically sending cumulative gas flow information signals and gas analysis signals to the system controller, and periodically sending flow adjustment signals to the flow adjustment devices to minimize the difference between the actual gas composition and the desired gas composition.