Patent ID: 7924129

Claim:
An ignition coil, comprising: at least one core supporting a primary winding; at least one secondary winding inductively couplable to the primary winding, the secondary winding being associated with an electrical ground; a plastic case holding the windings and associated with a generally cylindrical plug engagement fitting defining an axis, an elongated slit being formed through the fitting and having at least an elongated slit segment parallel to the axis, the slit segment being configured for slidably receiving a protrusion associated with an inner surface of a bore of an engine, the bore providing access to a spark plug; a generally ring-shaped electrically conductive terminal disposed on the fitting and electrically connected to the electrical ground; and a spring juxtaposed with the fitting and configured to surround at least a boot associated with the spark plug, the terminal being oriented to electrically contact the spring, the spring being configured to electrically contact a base of the spark plug to establish an electrical path between the secondary winding and the base.