Title:
Electric heat plane negative pole
Document Type and Number:
Japanese Patent JP6238467
Kind Code:
B2
Abstract:
An electrically heated planar cathode for use in miniature x-ray tubes may be spiral design laser cut from a thin tantalum alloy ribbon foil (with grain stabilizing features). Bare ribbon is mounted to an aluminum nitride substrate in a manner that is puts the ribbon in minimal tension before it is machined into the spiral pattern. The spiral pattern can be optimized for electrical, thermal, and emission characteristics.
Inventors:
Caruso David Jay
Dinsmore Mark Tee
Dinsmore Mark Tee
Application Number:
JP2015511755A
Publication Date:
November 29, 2017
Filing Date:
May 10, 2013
Export Citation:
Assignee:
Thermo Scientific Portable Analytical Instruments Incorporated
International Classes:
H01J35/06; H01J9/02
Domestic Patent References:
| JP2005044606A |
Foreign References:
| WO2010086653A1 |
Attorney, Agent or Firm:
Koichi Tsujii
Sadao Kumakura
Disciple Maru Ken
Mitsuru Matsushita
Ichiro Kurasawa
Yasushi Yamamoto
Sadao Kumakura
Disciple Maru Ken
Mitsuru Matsushita
Ichiro Kurasawa
Yasushi Yamamoto