Inductor devices – With outer casing or housing – Potted type
Patent
1993-09-20
1995-05-16
Picard, Leo P.
Inductor devices
With outer casing or housing
Potted type
336107, 336178, 336198, 336208, H01F 2702
Patent
active
054164591
ABSTRACT:
An engine igniting coil device wherein an I-type core fitted in a hollow portion of a primary coil bobbin and a U-type core are arranged to oppose at their end faces, each other at a specified gap therebetween to form a closed magnetic circuit. The primary coil bobbin with the I-type core has a core holding portion integrally formed thereon for attaching thereto an end portion of the U-type core and the core holding portion also serves as an anti-cracking cover. This cover can accurately determine the positions of both cores and can effectively prevent initiation of cracking in the potting resin injected and cured in the coil case.
REFERENCES:
patent: 4763094 (1988-09-01), Kojima
patent: 4926152 (1990-05-01), Ito et al.
patent: 5008643 (1991-04-01), Heritier-Best
patent: 5015984 (1991-05-01), Vialaneix
patent: 5032814 (1991-07-01), Badaud
patent: 5109209 (1992-04-01), Ida et al.
patent: 5257611 (1993-11-01), Chapekis et al.
Ida Yasuhiko
Sakamaki Makoto
Picard Leo P.
Thomas L.
Toyo Denso Kabushiki Kaisha
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