Electron tube
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United States of America Patent
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Nov 24, 2015
Grant Date -
Oct 2, 2014
app pub date -
Mar 28, 2014
filing date -
Mar 29, 2013
priority date (Note) -
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Abstract
An electron tube includes a shell that encloses a helix inside, and a plurality of support rods that support and fix the helix inside the shell, a part of each support rod that is in contact with an inner wall of the shell being covered with a conductive material, another part of each support rod that is in contact with the helix being covered with a dielectric material. The widths of conductive material of one end and another end of each support rod in a longitudinal direction are different, the side surface not being in contact with the shell nor the helix.
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