Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Electron or ion beam deflecting type
Patent
1976-03-17
1978-05-23
Pellinen, A. D.
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Electron or ion beam deflecting type
H01J 2968
Patent
active
040913473
ABSTRACT:
A first magnetic field producing member has its poles oriented for producing an initial predetermined movement of the two outside ones of three in-line beams of a cathode ray tube. Second and third field producing members are adjustable for producing variable strength and direction of magnetic fields for moving the two outside beams in opposite and the same directions, respectively, for converging the three beams.
REFERENCES:
patent: 2923844 (1960-02-01), Gundert
patent: 3808570 (1974-04-01), Thompson et al.
patent: 3902145 (1975-08-01), Slavenburg et al.
Pellinen A. D.
Rasmussen Paul J.
RCA Corporation
Whitacre Eugene M.
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