Karen K Quinn

US Patent:

6361208, Mar 26, 2002

Filed:

Nov 26, 1999

Appl. No.:

09/449411

Inventors:

Jeff Takenaka - Salt Lake City UT
Scott Coles - Salt Lake City UT
Mark Lange - Salt Lake City UT
Karen Quinn - Salt Lake City UT
Christopher F. Artig - Summit Park UT

Assignee:

Varian Medical Systems - Palo Alto CA

International Classification:

H01J 3510

US Classification:

378199, 378201

Abstract:

The present invention is directed to a radiographic apparatus that utilizes a single integral housing for providing an evacuated envelope for an anode and cathode assembly. The integral housing provides sufficient radiation blocking and heat transfer characteristics such that an additional external housing is not required. The integral housing is air cooled, and thus does not utilize any coolant. In addition, the integral housing is insulated with a dielectric gel material, which electrically insulates the integral housing and its components, and also limits the amount of noise emitted from the housing during operation.

US Patent:

6487273, Nov 26, 2002

Filed:

Nov 20, 2001

Appl. No.:

09/989239

Inventors:

Jeff Takenaka - Salt Lake City UT
Scott Coles - Salt Lake City UT
Mark Lange - Salt Lake City UT
Karen Quinn - Salt Lake City UT
Christopher Artig - Summit City UT
Jim Burke - Glenview IL
Brian Carsten - Park City UT
Craig Smith - Herriman UT

Assignee:

Varian Medical Systems, Inc. - Palo Alto CA

International Classification:

H01J 3510

US Classification:

378142, 378131, 378199, 378201

Abstract:

The present invention is directed to a radiographic apparatus that utilizes a single integral housing for providing an evacuated envelope for an anode and cathode assembly. The integral housing provides sufficient radiation blocking and heat transfer characteristics such that an additional external housing is not required. The integral housing is air cooled, and thus does not utilize any coolant. In addition, the integral housing is insulated with a potting material, which electrically insulates the integral housing and its components, and also limits the amount of noise emitted from the housing during operation. In an alternative embodiment, enhanced thermal and electrically insulating properties are achieved through the use of a potting material disposed in selected areas of the tube interior. The potting material cooperates with optimized airflow through the tube assembly to effectively and continuously remove heat therefrom.