Engine igniting coil device and method of winding an ignition co

Details Engine igniting coil device and method of winding an ignition co Engine igniting coil device and method of winding an ignition co

1997-08-28

1999-07-27

Gellner, Michael L.

Inductor devices

With outer casing or housing

Potted type

336225, 336190, 336222, H01F 2702, H01F 2728

Patent

active

059297360

ABSTRACT:
In an engine igniting coil device comprising an ignition coil assembly potted integrally in a coil case by injecting melted insulating resin, a secondary coil is formed on a coil bobbin by bank winding an element wire in layers of wire turns one over another at a certain bank angle in an axial direction on the bobbin and by slope-winding of layers on the end portion of the bobbin by tapering the coil (by reducing the number of layers therein) in the winding direction. This allows setting a dielectric strength of interlayer insulation of the secondary coil according to a potential distribution therebetween, which is secured by forming an insulation resin layer of a reduced thickness between the coil case and the secondary coil of the secondary coil bobbin, thus realizing a compact engine-igniting coil device.

REFERENCES:
patent: 2916711 (1959-12-01), Gillen
patent: 4988055 (1991-01-01), Sakai et al.
patent: 5632259 (1997-05-01), Konda et al.
patent: 5736917 (1998-04-01), Kawano et al.
patent: 5767758 (1998-06-01), Sakamaki

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