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:
Jan. 28, 2003
Filed:
Jan. 30, 2001
Hitachi, Ltd., Tokyo, JP;
Abstract
A dewar for SQUID is provided. In the dewar for SQUID, an amount of leak gas discharged from absorbent arranged in the upper portion higher than the liquid surface level of liquid helium is small even if the liquid surface level of the liquid helium is lowered. In order to attain the above object, a dewar in accordance with the present invention comprises an inner container for holding a SQUID magnetometer and a coolant, the inner container being made of a non-magnetic and electrically non-conductive material; an outer container for forming a thermal insulating space between the inner container and the outer container, the outer container being made of a non-magnetic and electrically non-conductive material; and a gas absorber provided inside the thermal insulating space, and the dewar further comprises a non-magnetic thermal conductor in contact both with the gas absorber arranged at a level higher than a level of a holding position of the SQUID magnetometer and with a position of the inner container at a level lower than a level of the gas absorber.