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:
Dec. 23, 2008
Filed:
May. 20, 2004
Chang-ha Lee, Seoul, KR;
Chang-Ha Lee, Seoul, KR;
Yonsei University, Seoul, KR;
Daesung Industrial Gases Co., Ltd., Seoul, KR;
Abstract
The present invention concerns the apparatus for producing oxygen, comprising: a first zeolite bed connected to an external air pressurizing device and a depressurizing device for increasing or decreasing an internal pressure thereof; a second zeolite bed connected to the first zeolite bed in parallel and connected to the external air pressurizing device and the depressurizing device for decreasing or increasing an internal pressure thereof, the first and second zeolite beds being arranged such that the internal pressure of the second zeolite bed is decreased when the internal pressure of the first zeolite bed is increased, and the internal pressure of the second zeolite bed is increased when the internal pressure of the first zeolite bed is decreased; and a carbon molecular sieve bed communicated in fluid with the first and second zeolite beds for receiving and adsorbing oxygen produced in the first and second zeolite beds and discharging the produced oxygen to the outside and discharging selectively some of the produced oxygen to the first zeolite bed or the second zeolite bed.