IGNITION COIL FOR INTERNAL COMBUSTION ENGINE
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United States of America Patent
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Issued Date -
Nov 28, 2013
app pub date -
May 23, 2013
filing date -
May 24, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An ignition coil for an internal combustion engine is provided which includes a body with a metallic hollow cylinder and a high-voltage portion joined to an end of the cylinder. The hollow cylinder has a primary winding and a secondary winding disposed therein. The high-voltage portion is made of a resin material and includes an inner cylinder and an outer cylinder disposed outside the inner cylinder through a gap. The inner cylinder has disposed therein a conductive elastic member which establishes an electric connection to a spark plug. A resinous insulator is disposed in a gap between the first and second cylinders. The resinous insulator is higher in insulation strength than the resin material of the high-voltage portion, thereby improving the degree of electric insulation between the metallic hollow cylinder and the conductive elastic member.
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