Twin spark pencil coil

Details Twin spark pencil coil Twin spark pencil coil

2006-12-12

2006-12-12

Mai, Anh (Department: 2832)

Inductor devices

With outer casing or housing

C336S092000, C123S634000

Reexamination Certificate

active

07148780

ABSTRACT:
An ignition apparatus having twin spark high-voltage outputs incorporates features of a pencil coil wherein at least a portion of a transformer assembly is disposed within a spark plug well when installed in an internal combustion engine, thereby reducing the space required on the top of the engine. A secondary winding spool is configured to retain a secondary winding in first and second portions, wound either the same way for use in waste spark ignition systems or in opposite orientations for two-plug-per-cylinder systems. An alternate configuration includes an isolated shield that is internal to the case.

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Skinner et al, U.S. Appl. No 10/976,045, filed Oct. 28, 2004, “Ignition Coil with Secondary Winding Center Tap Connected to Shield”.
EP 06 07 5074, European Search Report Dated Apr. 28, 1006.

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