Motorcycle circuit breaker ignition advance

Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...

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F02D 500

Patent

active

054873673

ABSTRACT:
An automatic advance unit as applied to the circuit breaker ignition of motorcycles. In the circuit breaker advance unit herein, flyweight roll pins are not set in the flyweights, per se, but they are mounted in the advance unit backing plate, ensuring that the flyweights are movable in perfect horizontal position. The advance unit assembly baseplate and centrally disposed breaker cam journal thereon has connection to a driving gear cam; opposed flyweight mounting pins project from the, backing plate and opposed flyweight mounting pins are on the backing plate, per se; opposed flyweight roll pins being set thereon, breaker cam spot pin is interposed on the plate including the breaker cam and flyweight roll pins. A breaker cam 9 is mounted in extension of journal of the backing plate, centrally thereof; centrifugally activated flyweights are slideably contacting contiguous portions of the baseplate.

REFERENCES:
patent: 4183131 (1980-01-01), Seya et al.
patent: 4333433 (1982-06-01), Mattson
patent: 4535737 (1985-08-01), Takami
patent: 4538564 (1985-09-01), Ehrmann et al.
patent: 4744339 (1988-05-01), Nagai et al.
patent: 4955330 (1990-09-01), Fabi et al.

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