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. 09, 1997
Filed:
Feb. 15, 1996
Applicant:
Inventor:
John Terence Lavin, Guildford, GB;
Assignee:
The BOC Group plc, Windlesham, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62640 ; 62903 ;
Abstract
An heat exchange-cum-rectification apparatus comprises a heat exchanger having a first set of passages for separating by dephlegmation a first flow of compressed vaporous air into nitrogen-rich fluid and oxygen-enriched liquid air, and, in heat exchange relationship with said first set of passages, a second set of passages for separating by stripping reboiling an oxygen product from the oxygen-enriched liquid air. A valve is provided for reducing the pressure of the oxygen-enriched liquid air intermediate the said first and second sets of passages.