Inductor devices – Core forms casing
Patent
1997-05-27
1999-11-16
Kozma, Thomas J.
Inductor devices
Core forms casing
336 96, 336110, 336212, 336234, H01F 1502, H01F 2724
Patent
active
059865326
ABSTRACT:
The invention is directed to an ignition coil for an internal combustion engine which includes a columnar member having a plurality of magnetic plates, e.g., silicon steel plates stacked one on the other with stacked portions formed on the magnetic plates. The magnetic columnar member includes a first portion having a plurality of magnetic plates stacked one on the other in accordance with increase of a width of each plate, a second portion connected to the first portion and having a plurality of magnetic plates with the same width stacked stacked one on the other, and a third portion connected to the second portion and having a plurality of magnetic plates stacked one on the other in accordance with decrease of a width of each plate, thereby to form the columnar member with a middle portion thereof having a substantially circular cross section. The ignition coil further includes a primary winding and a secondary winding which are wound around the columnar member, a magnetic cylindrical member in which the columnar member is received. A plurality of rectangular recesses are formed on one side of each magnetic plate, and a plurality of rectangular protrusions are formed on the other side of each magnetic plate, to form a plurality of rectangular stacked portions on the columnar member.
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Kikuta Hikaru
Yoshihara Katsuo
Aisan Kogyo Kabushiki Kaisha
Kozma Thomas J.
Miyama-Seiko Manufacturing Co., Ltd.
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