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:
Jan. 09, 2004
Takashi Shimono, Kuroiso, JP;
Katsunori Shimizu, Nasu-gun, JP;
Takashi Shimono, Kuroiso, JP;
Katsunori Shimizu, Nasu-gun, JP;
Toshiba Electron Tube & Devices Co., Ltd., Otawara-shi, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An x-ray tube () irradiates an electron beam from a cathode () to impact a target () and emit x-rays. When the x-ray tube () operates, the magnet portion () is rotated every fixed time period and positioned at a prescribed rotation position. Due to the rotation of the magnet portion (), the magnetic field formed by the permanent magnets () changes and the irradiation position on the target () of the electron beam moves. As a result, the electron beam is irradiated at a new position on the target () and the same amount of x-ray as the initial performance is generated.