Spark-plug wire having heat shield with retention features
AssigneeFord Global Technologies, LLC
InventorsChristopher Scott Langley, Paul S. Bonell, Nelson William Morrow, Jr.
Life of this patent
Estimating the term…
Abstract
A spark-plug wire includes a boot of electrically insulative material defining a central bore configured to receive a spark plug, an electrical connector disposed in the central bore and configured to connect with the spark plug, and a cylindrical heat shield circumscribing the boot. The heat shield has retaining features extending past a distal end of the boot and configured to radially flex to engage with a hex of the spark plug to increase a retaining force of the spark-plug wire to the spark plug.
Claims20
A spark-plug wire comprising:
- a boot of electrically insulative material defining a central bore configured to receive a spark plug;
- an electrical connector disposed in the central bore and configured to connect with the spark plug;
- and
- a cylindrical heat shield circumscribing the boot, the heat shield including retaining features extending pasta distal end of the boot and configured to radially flex to engage with a hex of the spark plug to increase a retaining force of the spark-plug wire to the spark plug.
A spark-plug wire comprising:
- a boot;
- an electrical terminal disposed in the boot and configured to couple with an electrode of a spark plug;
- and
- a cylindrical heat shield disposed around the boot and having a plurality of longitudinally extending slots defining gripping claws integral with the heat shield, the gripping claws being extendable over a hex of the spark plug to allow engagement with a backside of the hex, wherein the gripping claws are radially deflectable allowing the heat shield to be received past the hex and are biased radially inward to grip the backside and increase a retaining force of the spark-plug wire to the spark plug.
A spark-plug assembly comprising:
- a spark plug;
- and
- a spark-plug wire including:
- a boot;
- an electrical connector disposed in the boot and coupled to a terminal of the spark plug;
- and
- a cylindrical heat shield disposed around the boot and having a plurality of longitudinally extending slots defining gripping claws integral with the heat shield, wherein the gripping claws extend over a hex of the spark plug to engage with a backside of the hex, and wherein the gripping claws are radially deflectable allowing the heat shield to be received past the hex and are biased radially inward to grip the backside and increase a retaining force of the spark-plug wire to the spark plug.
Dependencies are inferred from the claim text.