Annular gap cathodes with graphite caps

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12057285
APP PUB NO 20240161993A1
SERIAL NO

18388122

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Abstract

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A cathode device including an emitter element for generating electrons. The emitter element can have an outer periphery and a distal tip. The tip can have a first angled surface that angles inwardly from the outer periphery, and a second angled surface that angles inwardly and is separated and inwardly offset from the first angled surface by a shoulder. A graphite cap which can be solid, extends around the emitter element and has an internal angled surface that engages the first angled surface of the tip of the emitter element, forming a gap of a controlled size separating the internal angled surface of the graphite cap from the second angled surface of the tip of the emitter element.

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Patent Owner(s)

Patent OwnerAddress
KIMBALL PHYSICS INC311 KIMBALL HILL ROAD WILTON NH 03086

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Calvey, George Douglas Peterborough, US 2 0

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