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:
Sep. 20, 2011
Filed:
Feb. 09, 2005
Theodore W. Jagger, White Bear Lake, MN (US);
Nicholas P. Van Brunt, White Bear Lake, MN (US);
John A. Kivisto, Oak Grove, MN (US);
Perry B. Lonnes, White Bear Lake, MN (US);
Theodore W. Jagger, White Bear Lake, MN (US);
Nicholas P. Van Brunt, White Bear Lake, MN (US);
John A. Kivisto, Oak Grove, MN (US);
Perry B. Lonnes, White Bear Lake, MN (US);
Vbox, Incorporated, White Bear Lakes, MN (US);
Abstract
An oxygen concentrator comprises an oxygen reservoir and adsorbent columns that each have an inlet, an outlet, and a bed of adsorbent material. The concentrator also comprises an air inlet, an exhaust outlet, and a vacuum pump for pumping nitrogen rich gas from one of the column inlets to the exhaust outlet. A product control pump pumps oxygen rich gas from one of the column outlets to the oxygen reservoir. A control valve controls flow in and out of the columns by selectively connecting the air inlet to one column inlet, connecting the vacuum pump to another column inlet, and connecting the product control pump to a column outlet. A motor drives the vacuum pump and control valve to produce vacuum swing adsorption (VSA) cycles in which oxygen-rich product gas is separated and accumulated in the reservoir.