Interlock circuit for both electric and manual starting

Details Interlock circuit for both electric and manual starting Interlock circuit for both electric and manual starting

1991-01-31

1992-01-07

Dolinar, Andrew M.

Internal-combustion engines

Starting device

Either power or manual starting device

192 84R, 1231794, 1231795, 12317923, F02N 302, F02N 1108

Patent

active

050781049

ABSTRACT:
An interlock circuit is provided wherein a foot switch connected through a diode to the alternator is depressed during rope-pull starting and provides power from the alternator to energize a relay and disable a magneto kill circuit to facilitate manual start. As the engine turns over and current flows from the alternator, the relay is bootstrapped to the energized position so that the engine remains running even after the foot switch is released. Normal interlock features, such as those which rely on operator presence or the transmission being in neutral, remain operational without additional switches and without need for a battery being present in the circuit.

REFERENCES:
patent: 3521612 (1970-07-01), Santi et al.
patent: 3613482 (1971-10-01), Benson, Jr. et al.
patent: 3718128 (1973-02-01), Botker
patent: 4223657 (1980-09-01), Sato et al.
patent: 4651018 (1987-03-01), Peterson, Jr.
patent: 4974711 (1990-12-01), Peterson, Jr. et al.

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