Kickback preventing circuit for engine

Internal-combustion engines – High tension ignition system – Safety device

Reexamination Certificate

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Reexamination Certificate

active

07931014

ABSTRACT:
An ignition control circuit and method of operation provides a very simple but highly effective prevention of engine reverse rotation upon starting by prohibiting ignition when a reverse rotation situation arises.

REFERENCES:
patent: 4080940 (1978-03-01), Fuzzell et al.
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patent: 5020506 (1991-06-01), Ozawa
patent: 5778862 (1998-07-01), Fukui
patent: 6435158 (2002-08-01), Mingo et al.
patent: 6786212 (2004-09-01), Choi
patent: 55-12235 (1980-01-01), None
patent: 61-226568 (1986-10-01), None
patent: 1-106975 (1989-04-01), None
Masaoka et al.: “Kickback Preventing Circuit For Engine”; U.S. Appl. No. 10/605,843, filed Oct. 30, 2003.
Masaoka et al.: “Kickback Preventing Circuit For Engine”, U.S. Appl. No. 11/307,412, filed Feb. 6, 2006.

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