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 Title: |
US6064137:
Method and apparatus for a vacuum thermionic converter with thin film carbonaceous field emission
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Cox, Rodney T.; Hillsboro, OR
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| Assignee: |
Borealis Technical Limited Gibraltar
other patents from BOREALIS TECHNICAL INCORPORATED LIMITED (713339) (approx. 29)
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| Published / Filed: |
2000-05-16
/ 1998-02-05
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| Application Number: |
US1998000414291
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| IPC Code: |
Advanced:
H01J 45/00;
H02N 3/00;
Core:
more...
IPC-7:
H02N 3/00;
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| ECLA Code: |
H01J45/00; H02N3/00;
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| U.S. Class: |
310/306;
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| Field of Search: |
310/306,307
136/200,205
257/077
313/310,495,496,346 R,355,270
322/2 R
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| Priority Number: |
| 1998-02-05 |
US1998000414291 |
| 1996-03-06 |
US1996000610599 |
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| Abstract: |
A Vacuum Diode is constructed in which the electrodes of the Vacuum Diode are coated with a thin film of diamond-like carbonaceous material. The cathode and anode are separated by spacers and a rinse-able material, the rinse-able material which is later removed. Carbonaceous films and the related process for producing a thin film of ablated diamond are not previously known in connection with Vacuum Thermionic Converters, and provide a practical and improved means of constructing such devices. A Vacuum Thermionic Converter is optimized for the most efficient generation of electricity by utilizing a cathode and anode of very low work function. The relationship of the work functions of cathode and anode are shown to be optimized when the cathode work function is the minimum value required to maintain current density saturation at the desired temperature, while the anode's work function is as low as possible, and in any case lower than the cathode's work function. When this relationship is obtained, the efficiency of the original device is improved. It is further shown that contact potential difference between cathode and anode may be set against the effects of space charge, resulting in an improved device whereby anode and cathode may be set at a greater distance from each other than has been previously envisaged.
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| Primary / Asst. Examiners: |
Enad, Elvin; Tamai, K. Eizo
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| Maintenance Status: |
E1 Expired Check current status
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| INPADOC Legal Status: |
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