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. 08, 1982
Filed:
Jul. 10, 1980
Applicant:
Inventor:
Yasuo Kuraoka, Sapporo, JP;
Assignee:
Hoxan Corporation, Sapporo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25J / ;
U.S. Cl.
CPC ...
62-9 ; 62 40 ; 62 45 ;
Abstract
A method of liquefying Freon gas using a vessel having an inner and an outer tank, and a jacket around the inner tank which comprises the steps of operating a vacuum pump, opening a solenoid valve to evacuate the air in the space formed between the outer periphery of the inner tank and said jacket to form a vacuum, then supplying Freon gas from a bomb into the inner tank, and cooling the Freon gas in the inner tank through a heat exchange medium such as helium in said space while supplying a cooling medium to a second space between said jacket outer wall and said outer tank inner wall space to thereby liquefy the Freon gas.