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. 02, 1996
Filed:
May. 03, 1995
Yutaro Kimura, Kyoto, JP;
Tetsuhiko Ikeshima, Kyoto, JP;
Hiromichi Tonami, Kyoto, JP;
Ikuo Konishi, Nara, JP;
Hiroshi Horikawa, Kyoto, JP;
Akihiro Daikoku, Hyogo, JP;
Shigekazu Sakabe, Hyogo, JP;
Masao Inoue, Hyogo, JP;
Akinori Yamasaki, Hyogo, JP;
Shimadzu Corporation, Kyoto, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
The rotary cathode X-ray tube equipment of the present invention is constructed so as to permit radiation of X-ray from all directions with respect to the whole circumference of a subject, and is used for x-ray CT. The equipment of the invention is constructed to prevent an X-ray radiation window 40 of a low strength from being influenced by atmospheric deformations of a vacuum vessel 1 or by machining and assembling errors, for example by using a joint portion disposed between the X-ray radiation window and an inner ring and having both a surface perpendicular to a rotational axis of a rotary member and a cylindrical surface parallel to the rotational axis, a face seal formed on the surface of the joint portion perpendicular to the rotational axis, and an axial seal formed on the cylindrical surface of the joint portion parallel to the rotational axis.