Convergence coil assembly for color television

Details Convergence coil assembly for color television Convergence coil assembly for color television

1975-11-28

1977-03-08

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335213, H01F 700

Patent

active

RE0291501

ABSTRACT:
The convergence coil assembly comprises a frame plate with guides at an angle of 120.degree. to receive three coil housings which are slidable radially to compensate for variations in the diameter of the tube neck. At their inner ends the housings have flanges receiving a resilient clamp ring to draw them against the tube neck. The clamp ring may be hooked to provide different degrees of tension. Indicators provide visual alignment of the magnets with a desired part of the gun. A permanent magnet on the outer end of the core of the electromagnets is rotatable for adjustment, and there are means to hold the adjustment.

REFERENCES:
patent: 2565331 (1951-08-01), Torsch
patent: 2766393 (1956-10-01), Casey
patent: 2880340 (1959-03-01), Armstrong
patent: 2897390 (1959-07-01), Jensen
patent: 3138730 (1964-06-01), Heuer et al.
patent: 3188534 (1965-06-01), Patti
patent: 3201629 (1965-08-01), Ammerman
patent: 3303444 (1967-02-01), Leeb et al.
patent: 3349268 (1967-10-01), Babcock et al.
patent: 3354337 (1967-11-01), De Both

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