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. 06, 2016
Filed:
Jan. 08, 2015
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 35/08 (2006.01); H01J 35/06 (2006.01); H01J 35/18 (2006.01); H01J 35/20 (2006.01); H05G 1/06 (2006.01);
U.S. Cl.
CPC ...
H01J 35/08 (2013.01); H01J 35/18 (2013.01); H01J 35/20 (2013.01); H05G 1/06 (2013.01); H01J 2235/166 (2013.01); H01J 2235/186 (2013.01); H01J 2235/205 (2013.01);
Abstract
In a radiation tube, a conductive member having an opening formed therein is disposed, and a dielectric is disposed in the conductive member. Thus, foreign matter that has entered the conductive member through the opening is trapped by the dielectric. As a result, discharge due to foreign matter can be reduced.