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:
Jul. 31, 2007
Filed:
Jun. 01, 2006
Hiroshi Morita, Mito, JP;
Ryozo Takeuchi, Hitachi, JP;
Akira Kurome, Kashiwa, JP;
Takeshi Yatsuo, Kashiwa, JP;
Hirotaka Takeshima, Ryugasaki, JP;
Hiroshi Morita, Mito, JP;
Ryozo Takeuchi, Hitachi, JP;
Akira Kurome, Kashiwa, JP;
Takeshi Yatsuo, Kashiwa, JP;
Hirotaka Takeshima, Ryugasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A gradient coil apparatus for magnetic resonance imaging system includes a plurality of gradient coilsandfor applying a gradient magnetic field to a test object and an internal heat exchangerto be immersed in insulation oilin a container. A pumpis disposed to circulate coolant between the internal heat exchangerand an external heat exchangeris disposed outside of the container. This arrangement allows the insulation oil only inside of the container, thereby ensuring a substantial reduction in the amount of insulation oil.