CRT deflection unit and its method of manufacture

Details CRT deflection unit and its method of manufacture CRT deflection unit and its method of manufacture

1998-11-24

2000-08-08

Gellner, Michael L.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

Electron or ion beam deflecting type

335213, 313440, 348829, 348830, H01F 700

Patent

active

06100779&

ABSTRACT:
The deflection unit has a yoke ring mounted on, and secured to, a coil assembly comprising deflection coils carried on a support. The yoke ring (22) is secured using a flow process in which the coil assembly is rotated about a vertical axis and flowable adhesive, e.g. polyurethane resin, is directed at one end (28) of the yoke ring such that the adhesive (30) flows over its outer surface (24) to its other end, forming a protective coating, and onto an adjacent part (20) of the coil assembly. The adhesive flows also over a substantial portion of the inner surface (23) of the yoke ring in the gap between the yoke ring and the coil assembly providing extensive bonding (32) between the yoke ring and the coil assembly which reduces unwanted noise effects from the unit in subsequent operation.

REFERENCES:
patent: 3810053 (1974-05-01), McGlashan
patent: 3878490 (1975-04-01), Logan
patent: 4673906 (1987-06-01), Petrow
patent: 4687966 (1987-08-01), Carroll et al.
patent: 4749975 (1988-06-01), Tokita et al.
patent: 5138290 (1992-08-01), Togane et al.
patent: 5404204 (1995-04-01), Swinkels

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