Integral grid/cathode for vacuum tubes

Details Integral grid/cathode for vacuum tubes Integral grid/cathode for vacuum tubes

1986-03-06

1987-07-14

Chatmon, Saxfield

Electric lamp and discharge devices

Electrode and shield structures

Foraminous electrodes or shields

313346R, 313338, 313304, 313293, 313444, 313447, 445 47, 445 50, H01J 146, H01J 152, H01J 1704, H01J 1712, H01J 1938

Patent

active

046805001

ABSTRACT:
The structure is material such as a ceramic in the form of a bundle of open cells, a "honeycomb", with the shape of the cells corresponding to the shape of the openings desired in the grid. The cathode is formed in the cells, rather than adding the grid to a ready-made cathode. The grid is formed by coating the end of the cell walls with a conducting material (metal and/or carbon). The surface of the cathode is suitably recessed from the grid.

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