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. 04, 1986
Filed:
Mar. 10, 1983
Applicant:
Inventors:
Bernard J Schebler, Davenport, IA (US);
Russell F Hart, Blue Grass, IA (US);
Assignee:
Litton Systems, Inc., Davenport, IA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
137 811 ; 137115 ; 137118 ;
Abstract
An oxygen partial pressure controller regulates the oxygen partial pressure (PPO.sub.2) of the product gas of a pressure swing adsorption oxygen enriching system by means of a bleed valve which increases gas flow through the adsorptive system thereby decreasing the PPO.sub.2 of the product gas. The controller includes a solenoid valve which permits the bleed valve to function when the adsorption system pressure and PPO.sub.2 is high. An aneroid controls the product gas flow as a function of altitude when the bleed valve is permitted to function.