Stick-shaped ignition coil having positioning structure

Details Stick-shaped ignition coil having positioning structure Stick-shaped ignition coil having positioning structure

2005-09-20

2005-09-20

Nguyen, Tuyen T. (Department: 2832)

Inductor devices

With outer casing or housing

Reexamination Certificate

active

06946943

ABSTRACT:
A stick-shaped ignition coil includes a center core, a primary and secondary coils arranged on the radially outer side of the center core, a metallic outer core arranged on the radially outer side of the primary and secondary coils, an upper case connected to the upper end of the primary and secondary coils, and at least one positioning portion formed on the radially outer periphery of the upper case. The upper case and the positioning portion are at least partially received in the plughole. The positioning portion is in proximity to or makes contact with the inner periphery of in the plughole in the radial direction of the plughole. Thus, the ignition coil can be properly positioned in the plughole formed in a cylinder head of an internal combustion engine.

REFERENCES:
patent: 6011457 (2000-01-01), Sakamaki et al.
patent: 6622712 (2003-09-01), Nakashima et al.
patent: 6639498 (2003-10-01), Shimada et al.
patent: A-9-222067 (1996-11-01), None
patent: B2-3393770 (2003-03-01), None

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