Jose A Buan

US Patent:

20120128122, May 24, 2012

Filed:

Jul 29, 2010

Appl. No.:

13/384699

Inventors:

Allan Kautz - Naperville IL, US
Salvatore Perno - Winfield IL, US
Gary Brooks - Dekalb IL, US
George Awad - Oswego IL, US
Jose Angelo Buan - Oswego IL, US

Assignee:

KONINKLIJKE PHILIPS ELECTRONICS N.V. - EINDHOVEN

International Classification:

H01J 35/30
H05G 1/64

US Classification:

378 16, 378137

Abstract:

An X-ray tube () is provided which is adapted to generate X-ray beams (). The X-ray tube may comprise electrostatic grids () for focal spot deflection in x-direction, wherein the electrostatic grids are mounted on either side of the cathode (). Further the X-ray tube may comprise electromagnetic coils () for focal spot deflection in y-direction, wherein said electromagnetic coils forming a dipole, are mounted external to the X-ray tube and are positioned between the cathode and the target of the anode (), so that the electron beam () passes between its poles. The electrostatic grids and the electromagnetic coils are arranged separately from each other and provide for a combination of electrostatic x-deflection in tandem with electromagnetic z-deflection.

US Patent:

20120275562, Nov 1, 2012

Filed:

Jan 4, 2011

Appl. No.:

13/520376

Inventors:

Allan Kautz - Naperville IL, US
Salvatore Perno - Winfield IL, US
Gary Brooks - Dekalb IL, US
George Awad - Oswego IL, US
Jose Angelo Buan - Oswego IL, US

Assignee:

KONINKLIJKE PHILIPS ELECTRONICS N.V. - EINDHOVEN

International Classification:

H01J 35/30
G01N 23/04

US Classification:

378 20, 378137, 378 4

Abstract:

An X-ray tube is provided adapted to generate X-ray beams, comprising a first and a second deflection device mounted external or internal to the X-ray tube between a cathode and an anode in a diagonal manner for focal spot deflection in a combined x- and y-direction. The first and second deflection devices are triggered alternately such that only one deflection device is activated at a time. The first and second deflection devices may be triggered according to a predetermined switching sequence, e.g. producing a predetermined deflection pattern of the focal spot. Thereby, an improved x- and z-flying focal spot methodology is provided.

US Patent:

6603834, Aug 5, 2003

Filed:

Sep 18, 2001

Appl. No.:

09/954822

Inventors:

Qing K. Lu - Aurora IL
Todd R. Bittner - Chicago IL
Allan D. Kautz - Naperville IL
Gerald J. Carlson - Aurora IL
Thomas R. Miller - St. Charles IL
Jose A. Buan - Bolingbrook IL
Salvatore G. Perno - Winfield IL
Paul M. Xu - Oswego IL
Patrick P. McNally - Geneva IL

Assignee:

Koninklijke Philips Electronics, N.V. - Eindhoven

International Classification:

H01J 3510

US Classification:

378141, 378127, 378130

Abstract:

An x-ray tube assembly ( ) includes a housing ( ) and an insert frame ( ) supported within the housing ( ), such that the insert frame ( ) defines a substantially evacuated envelope in which a cathode assembly ( ) and a rotating anode assembly ( ) operate to produce x-rays. The rotating anode assembly ( ) includes an anode target plate ( ) coupled to a rotor ( ) and bearing shaft ( ), which is rotatably supported within a bearing housing ( ), by a plurality of ball bearings ( ). A heat barrier ( ) substantially surrounds the bearing housing ( ) and is coupled, along with the bearing housing ( ) to an anode cold plate ( ). The anode cold plate ( ) includes a grooved cover ( ), a basin ( ), and a plurality of corrugated fins ( ) disposed therein. Coupling both the bearing housing ( ) and the heat barrier ( ) to the anode cold plate ( ) provides an effective means for cooling the bearing assembly ( ).