Electric lamp and discharge devices – Cathode ray tube – Ray generating or control
Patent
1993-01-08
1998-03-17
O'Shea, Sandra L.
Electric lamp and discharge devices
Cathode ray tube
Ray generating or control
313270, H01J 2946
Patent
active
057290849
ABSTRACT:
A cathode sheath for a thermionic electron-gun cathode. The sheath is substantially in the form of a hollow cylinder and has an outer surface and an inner surface, a central axis, a closed end and an axially-opposite open end, and a side wall extending between the closed end and the open end. The sheath is a continuous bimetallic laminate having a first layer of material forming the inner surface and a second layer of electron-emissive material overlying substantially the entirety of the first layer and forming the outer surface. The laminate has a preselected thickness at the closed end and has a thickness at the side wall which varies along the central axis.
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Farina Jeffrey M.
Hale John Richard
Koehler Philip J.
Maropis Nicholas
O'Shea Sandra L.
Patel Vip
UTI Corporation
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