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:
Jun. 22, 1993
Filed:
Oct. 13, 1992
Applicant:
Inventors:
Takashi Nagamura, Kobe, JP;
Naohiko Yamashita, Kobe, JP;
Assignee:
Teisan Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62 30 ; 62 37 ; 62 41 ; 62 502 ;
Abstract
The invention concerns the separation of air with an external cold source. An internal cold source is provided to supply cold heat to a compressed inert gas by expansion of a part of a liquefied inert gas when the cold from the external cold source proves to be insufficient. This part of the liquefied inert gas is combined with recycling and compressed gases. The desired production of liquid oxygen and nitrogen is thus assured in spite of variations in the external cold source.