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:
Mar. 16, 2004
Filed:
Nov. 14, 2001
Applicant:
Inventors:
Todd Russell Bittner, Chicago, IL (US);
Qing Kelvin Lu, Aurora, IL (US);
Paul Mingwei Xu, Oswego, IL (US);
Assignee:
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Primary Examiner:
Int. Cl.
CPC ...
H01J 3/510 ;
U.S. Cl.
CPC ...
H01J 3/510 ;
Abstract
An x-ray tube ( ) includes a heat shield ( ) which intercepts heat radiating from an anode ( ), thereby reducing the temperature of a bearing assembly ( ). The heat shield includes outer and inner concentric cylinders ( ) spaced from each other by a vacuum gap ( ). The heat shield and a stationary portion ( ) of the bearing assembly are both connected to a cold plate ( ) so that heat is not conducted from the cylinders to the bearing assembly but is instead carried away by the cold plate to the surrounding cooling oil.