Don Warburton

US Patent:

6582531, Jun 24, 2003

Filed:

Aug 21, 2001

Appl. No.:

09/934265

Inventors:

Don Warburton - Sandy UT

Assignee:

Varian Medical Systems, Inc. - Palo Alto CA

International Classification:

C23C 806

US Classification:

148280, 148282, 148286, 148553, 427328, 378119, 378140

Abstract:

The present invention relates to structures within an x-ray device including an x-ray can, an x-ray can window frame insert, a rotor sleeve, and a bearing support assembly for a rotor structure. The various structures are fabricated from a chromium alloy of copper that is essentially oxygen free copper having a minor amount of chromium, the combination of which imparts desirable qualities to the x-ray device structures, including efficient heat sink and emissivity qualities that are beneficial in an x-ray device environment. In one preferred embodiment of the present invention, oxygen free high conductivity (OFHC) copper is melted in an RF furnace in the presence of a minor amount of chromium and is either ingot cast or powder metallurgically cast into a desired article and further fabricated into a finished article.

US Patent:

62822624, Aug 28, 2001

Filed:

Nov 10, 1999

Appl. No.:

9/437943

Inventors:

Don Warburton - Sandy UT

Assignee:

Varian Medical Systems, Inc. - Palo Alto CA

International Classification:

H01J 3518

US Classification:

378119

Abstract:

The present invention relates to structures within an x-ray device including an x-ray can, an x-ray can window frame insert, a rotor sleeve, and a bearing support assembly for a rotor structure. The various structures are fabricated from a chromium alloy of copper that is essentially oxygen free copper having a minor amount of chromium, the combination of which imparts desirable qualities to the x-ray device structures, including efficient heat sink and emissivity qualities that are beneficial in an x-ray device environment. In one preferred embodiment of the present invention, oxygen free high conductivity (OFHC) copper is melted in an RF furnace in the presence of a minor amount of chromium and is either ingot cast or powder metallurgically cast into a desired article and further fabricated into a finished article.