Internal-combustion engines – High tension ignition system – Radio interference protection
Reexamination Certificate
2007-05-08
2007-05-08
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
High tension ignition system
Radio interference protection
C123S634000, C336S096000
Reexamination Certificate
active
11202354
ABSTRACT:
To provide an ignition device for an internal combustion engine which for example prevents a crack from being made in a cast insulating resin or a transformer output voltage control element from being damaged. The ignition device for an internal combustion engine of the present invention includes: a transformer (2); a case (3) that is composed of a case body (3a) receiving the transformer (2), and a high-tension tower (3b) having an opening portion (5); a cast insulating resin (4) that is injected into the case body (3a) and cured and thus insulates and fixes the transformer (2); a high-voltage connection terminal (7) that closes the opening portion (5) such that the cast insulating resin (4) that has not been cured is prevented from entering the high-tension tower (3b); a noise-suppressing resister (8) that is received in the high-tension tower (3b), is electrically connected to the high-voltage connection terminal (7), and controls a voltage generated in the second winding in activating the transformer (2); and a spring (14) that electrically connects the noise-suppressing resister (8) and a spark plug to each other, and urges the noise-suppressing resister (8) toward the high-voltage connection terminal (7).
REFERENCES:
patent: 4224554 (1980-09-01), Nishio et al.
patent: 6501360 (2002-12-01), Martagni et al.
patent: 7036495 (2006-05-01), Shimizu
patent: 2003-243234 (2003-08-01), None
patent: 2004-232466 (2004-08-01), None
Iwa Masahiro
Murata Shigemi
Mitsubishi Denki & Kabushiki Kaisha
Sughrue & Mion, PLLC
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