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. 10, 1986
Filed:
Apr. 26, 1984
Seiichi Kikkawa, Katsuta, JP;
Hisanao Ogata, Chiyoda, JP;
Yoshinori Hakuraku, Chiyoda, JP;
Masahiro Mase, Tochigi, JP;
Nobuo Tsumaki, Ushiku, JP;
Yoshihisa Awada, Kudamatsu, JP;
Hiroki Kajiwara, Kudamatsu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A cryogenic liquefied pump system which includes a pump having a drive motor, bearings, a drive shaft, and an impeller adapted to be disposed in a vessel storing a cryogenic liquid. An outer insulating tank is mounted in the vessel and an inner insulating tank is mounted inside the outer insulating tank, with a vacuum layer being interposed between the inner and outer insulating tanks. An inner side of the inner insulated tank, in which the motor and bearings are arranged, is maintained at a room temperature, with a tip portion of the inner insulating tank being formed into an outer case extending into a cryogenic region outside of the outer insulated tank.