Inductor devices – With outer casing or housing – Internal inductor support
Reexamination Certificate
2007-10-09
2007-10-09
Mai, Anh (Department: 2832)
Inductor devices
With outer casing or housing
Internal inductor support
C336S090000, C336S096000
Reexamination Certificate
active
10528133
ABSTRACT:
The present invention relates to an ignition coil for ignition systems, in particular a rod ignition coil for internal-combustion engines, comprising at least one primary winding and at least one secondary winding, a high voltage being induced in the secondary winding when current flows in the primary winding. A ferromagnetic core is surrounded in part by the primary winding and the secondary winding and one of the two windings is additionally surrounded at least in part by the other. To provide an improved ignition coil which ensures increased reliability in operation and energy efficiency and a reduced risk of overheating during operation, at least one of the windings comprises at least one portion having an elevated winding density relative to the remaining winding density, the diameter of the innermost turns in the at least one portion being smaller than the diameter of the innermost turns in the remaining winding portions.
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patent: 59061908 (1984-04-01), None
Barley Snyder LLC
Mai Anh
Tyco Electronics AMP GmbH
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