Deflection unit with rigidly coupled yoke ring and coil support

Details Deflection unit with rigidly coupled yoke ring and coil support Deflection unit with rigidly coupled yoke ring and coil support

1997-12-08

1999-11-16

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

335210, 313402, H01J 2970, H01J 2902, H01F 702

Patent

active

059863960

ABSTRACT:
Deflection unit for a display tube, comprising a coil support (8) with a saddle-type field deflection coil (12) and a yoke ring (14) surrounding this coil. A form-filling adhesive material (extending between the open portions of the field deflection coil as far as the support) is provided in the free space between the support (8) and the yoke ring (14), with which material the support and the field deflection coil are rigidly connected to the inner surface of the yoke ring. Vibrations of the yoke ring, and noise generated by the coil support due to transmission of these vibrations to the support, are substantially prevented, particularly if the adhesive material also has a damping effect, or if a thin layer of visco-elastic material preferably realizing a detachable connection between the adhesive material and the yoke ring is provided between this adhesive material and the yoke ring.

REFERENCES:
patent: 4673906 (1987-06-01), Petrow
patent: 5138290 (1992-08-01), Togane et al.
patent: 5412276 (1995-05-01), Van Mensvoort

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