Device for electron beam control in a cathode ray tube

Details Device for electron beam control in a cathode ray tube Device for electron beam control in a cathode ray tube

1991-11-26

1993-02-23

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313412, 335210, H01J 2976

Patent

active

051893363

ABSTRACT:
This invention enables the control of the electron beam position within a picture tube. Control is achieved by the use of a magnetized strip which is formed into a ring around the neck and secured by an adhesive film. In one implementation of this invention the strip has at least one end tapered in thickness for preventing an increase in thickness at the ring overlap. The strip ends are overlapped to provide a continuous ring of magnetic medium for optimum control capability.

REFERENCES:
patent: 4138628 (1979-02-01), Smith
patent: 4162470 (1979-07-01), Smith
patent: 4641062 (1987-02-01), Pons
patent: 5117151 (1992-05-01), Sluyterman et al.
"Fixture for Magnetic Sheath Magnetizing Unit", by D. L. Dodds, RCA Technical Notes, TN No. 1225, Apr. 1979, Sheets 1 and 2.

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