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:
Dec. 03, 2019
Filed:
Feb. 14, 2017
Canon Kabushiki Kaisha, Tokyo, JP;
Yoshihiro Yanagisawa, Fujisawa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is an X-ray generating tube including an electron gun, which includes a grid electrode secured to a support member. In the X-ray generating tube, thermal stress generated at a joining portion between the support member and the grid electrode is reduced, to thereby maintain a position of an electron beam on a target irradiated with the electron beam accurately for a long time. A grid electrode and a support member are secured to each other via a buffer member, which has an elastic coefficient that is lower than elastic coefficients of the grid electrode and the support member, and which is joined to the grid electrode and the support member through a first joining portion on the grid electrode side and a second joining portion on the support member side, respectively.