Ignition distributor

Details Ignition distributor Ignition distributor

1977-08-10

1979-03-27

Scott, James R.

Electricity: circuit makers and breakers

Periodic

Contact breaker detail

200 19DR, 200262, 200267, 200268, 338327, H01H 100, H01H 1900

Patent

active

041467590

ABSTRACT:
An ignition distributor for automotive vehicles comprises a shaft, a rotor arm mounted on the shaft for rotation therewith, a stationary center electrode mounted coaxially with the shaft, and a plurality of angularly spaced stationary outer electrodes. A contact member is secured to the rotor arm which extends between the center of the shaft and a point adjacent to the outer electrode and comprises a baseplate secured to the rotor arm and a resistive film secured to the baseplate, the latter being in electrical contact with the center electrode and in radially inwardly spaced from the outer electrode such that a sudden breakdown of air occurs when the outer end of the contact plate is positioned in proximity to the outer electrode generating an electric discharge. The baseplate is composed of a material having lower electrical conductivity than that of the resistive film so that a distributed constant RC transmission path is formed along the passage of the discharge current.

REFERENCES:
patent: 2037524 (1936-04-01), Mahaffey
patent: 2790020 (1953-04-01), Redick et al.
patent: 2818354 (1957-12-01), Pritikin et al.
patent: 3361886 (1968-01-01), Prickett
patent: 3474304 (1969-10-01), Currin et al.
patent: 3501600 (1970-03-01), Saulmon
patent: 3914514 (1975-10-01), MacKenzie et al.
patent: 4007342 (1977-02-01), Makino et al.
patent: 4039787 (1977-08-01), Hori et al.
patent: 4043030 (1977-08-01), Onishi et al.
patent: 4053866 (1977-10-01), Merz et al.

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