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:
Sep. 03, 2002
Filed:
Jun. 20, 2001
Tsunehiro Takeda, Tokyo, JP;
Japan Science and Technology Corporation, Saitama-Ken, JP;
Abstract
A liquid helium circulation system capable of recycling helium gas has a liquid helium reservoir 1 and refrigerator 5 where helium gas boil-off recovered from the reservoir is refrigerated and liquefied, and is designed to have the helium gas refrigerated or liquefied with the refrigerator returned to the reservoir. The system is equipped with line 9 that supplies high-temperature helium gas heated up inside the liquid helium reservoir to the refrigerator, where the helium gas is made into refrigerated helium gas, and supplies the refrigerated helium gas to the upper part inside the reservoir, lines 9 and 9 that supply low-temperature helium gas in the vicinity to the surface of liquid helium inside the liquid helium reservoir to the refrigerator, where the low-temperature gas is liquefied, and supply the liquefied helium to the reservoir.