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:
Feb. 19, 2002
Filed:
May. 11, 2000
Robert W. Murdoch, Woodstock, GA (US);
Valery Kravets, Holland, PA (US);
Scott Banks, Ivyland, PA (US);
Respironics, Inc., Pittsburgh, PA (US);
Abstract
A gas fractionalization system including a compressor for receiving air from the ambient environment and producing a flow of pressurized air, a gas separation system for producing a concentrated gas portion from the pressurized air, a valve for controlling duration during which the compressed air is delivered to the gas separation system during a pressurization cycle, and a product chamber for receiving concentrated gas produced by the gas separation system. The gas fractionalization system includes a control system that itself includes a pressure sensor for sensing the occurrence of high and low pressures within the product chamber, a processing system that determines the pressure ratio of the high and low gas pressure within the product chamber, and a valve controller that manipulates the valve, and, hence, the duration in which the flow of pressurized air is presented to the gas separation chamber based on the pressure ratio.