Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Reexamination Certificate
2007-04-17
2007-04-17
Bennett, Henry (Department: 3743)
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
C128S204220, C128S205110, C128S205120
Reexamination Certificate
active
09695612
ABSTRACT:
An oxygen concentrator is utilized in combination with a compressor, preferably a radial compressor, to provide a highly enriched and compressed oxygen gas in a mobile container such as a gas cylinder. The combination and method of production provides for the facile preparation of an enriched source of oxygen for use by an ambulatory or wheelchair-confined patient. The oxygen concentrator utilizes two or more molecular sieves to provide a breathable gas of at least about 85% or 90% oxygen from atmospheric air. The oxygen-enriched gas can be stored in a buffer tank and prioritized so as to supply a patient with a proper amount and concentration of oxygen and secondarily to supply an amount of the enriched oxygen to a compressor. The radial compressor utilizes multiple stages to produce the highly compressed oxygen-enriched gas and has radially arranged pistons. The radial compressor is compact and lightweight.
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Request for Ex Parte Reexamination Transmittal Form (2 pgs.), Request for Reexamination (26 pgs.) and Certificate of Mailing (2 pgs.), Information Disclosure Statement (2 pgs.) submitted to U.S. Patent Office on Aug. 16, 2006 for reexamination of U.S. Patent No. 5,988,165.
RIX Industries, “RIX SA Air Compressors - Oil-Free Breathing Air to 4,500 PSIG”, 2 pgs, undated.
Goertzen Gerald G
Polacsek David D
Richey, II Joseph B
Bennett Henry
Calfee Halter & Griswold LLP
Invcare Corporation
Wieker Amanda
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