Engine ignition coil device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 9, 1999
Grant Date -
N/A
app pub date -
Dec 19, 1996
filing date -
Dec 27, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An engine ignition coil device which comprises a coil case composed of a first cylindrical case and a second case having a small tubular hole in its center portion and an upper external shoulder at its open end fitted in an open end of the first case to form a closed end of the coil case and an internal unit assembled from a primary side coil bobbin, a secondary-side coil bobbin having a high-voltage terminal holder projecting from a center of its end flange portion, a rod-shaped core, and a high-voltage terminal attached to the high-voltage terminal holder and having a contact for electrically connecting an ignition plug thereto. The internal assembly is mounted in the coil case by inserting the high-voltage terminal holder in the small tubular hole of the secondary case with a tip of the contact projected outwardly therefrom and formed integrally with the coil case by injecting melted insulating resin into the coil case. Thus, the inner assembly can be easily located and reliably fixed at a given place in the coil case with no additional member, assuring precise forming of an integral device by potting with resin.
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