Electricity: magnetically operated switches – magnets – and electr – Magnets and electromagnets – Electron or ion beam deflecting type
Patent
1978-03-08
1981-01-06
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
Electron or ion beam deflecting type
335210, H01F 700
Patent
active
042439655
ABSTRACT:
A deflection coil is provided which comprises a coil frame having a flared coil bobbin and guides provided at the front and rear ends of the coil bobbin and integrated therewith. The guide at the front end of the coil frame has a first plurality of circumferentially spaced coil winding insertion slots therein and the guide at the rear end of the coil frame has a second plurality of circumferentially based coil winding insertion slots therein. The first plurality of slots is greater than the second plurality of slots. The deflection coil further comprises a saddle-type coil along the inside surface of the coil frame which has a plurality of wires passing through predetermined coil winding insertion slots in the guide at the front and rear ends of the coil frame. The saddle-type coil winding has a distribution in the slots for producing a magnetic field having a strong pin-shaped field at the front end thereof and a barrel-shaped field at the rear end thereof.
REFERENCES:
patent: 3801941 (1974-04-01), Phillips
patent: 3878490 (1975-04-01), Logan
patent: 3895329 (1975-07-01), Logan et al.
patent: 4023129 (1977-05-01), Kratz et al.
patent: 4070640 (1978-01-01), Torsch
patent: 4117432 (1978-09-01), Shizu
Broome Harold
Denki Onkyo Co., Ltd.
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