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:
Apr. 17, 2007
Filed:
Apr. 11, 2006
Hidero Anno, Otawara, JP;
Koichi Kitade, Otawara, JP;
Takayuki Kitami, Nasu-gun, JP;
Hironori Nakamuta, Otawara, JP;
Manabu Sato, Nasu-gun, JP;
Hidero Anno, Otawara, JP;
Koichi Kitade, Otawara, JP;
Takayuki Kitami, Nasu-gun, JP;
Hironori Nakamuta, Otawara, JP;
Manabu Sato, Nasu-gun, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electron Tubes & Devices, Co., Ltd., Tokyo, JP;
Abstract
An X-ray apparatus includes a rotation-anode type X-ray tube which is configured such that a rotatable anode target and a cathode that is disposed to be opposed to the anode target are accommodated within a vacuum envelope, a stator which generates an induction electromagnetic field for rotating the anode target, a housing which accommodates and holds at least the rotation-anode type X-ray tube, a circulation path which is provided near at least a part of the rotation-anode type X-ray tube, and through which a water-based coolant is circulated, and a cooling unit including a circulation pump, which is provided at a position along the circulation path and forcibly feeds the water-based coolant, and a radiator which radiates heat of the water-based coolant, wherein an amount of dissolved oxygen at 25° C. in the water-based coolant is 5 mg/liter or less.