Ignition distributor with noise suppression electrodes

Details Ignition distributor with noise suppression electrodes Ignition distributor with noise suppression electrodes

1978-06-15

1980-08-12

Scott, James R.

Electricity: circuit makers and breakers

Periodic

Contact breaker detail

1231465A, 123633, 200 19DR, 200262, 423344, H01H 1900, F02P 100, C01B 3306

Patent

active

042174708

ABSTRACT:
To provide for better distributor radio interference noise suppression and to localize resistance elements used in connection therewith as close to the spark gap of the distributor, the rotor electrode and/or the stationary electrodes in the distributor are made of a resistance material which has a sufficiently high resistance to provide for effective interference suppression; the material may be a high-melting oxynitride, particularly of a metal of the III or IV-B to VI-B groups of the periodic table; or a ceramic substrate, on which a coating is applied, for example of high melting point titanium, zirconium or aluminum oxide which are rendered conductive by being present in less than stoichiometric proportions; or silicon compounds such as chromium-silicon compounds, molybdenum-silicon compounds, with or without a matrix of silicon or ceramic-metal mixture in which the metal is both a binder and a conductive component, particularly Al.sub.2 O.sub.3 -Mo, Cr.sub.2 O.sub.3 -Si, SiC-Cr-Ni and B.sub.4 C.sub.3 -Ni.

REFERENCES:
patent: 2848586 (1958-08-01), Wainer et al.
patent: 3361886 (1968-01-01), Prickett
patent: 3362787 (1968-01-01), Matchen
patent: 3726643 (1973-04-01), Merzhanov et al.
patent: 3949721 (1976-04-01), Hori et al.
patent: 4007342 (1977-02-01), Makino et al.
patent: 4039787 (1977-08-01), Hori et al.
patent: 4074090 (1978-02-01), Hayashi et al.
patent: 4091245 (1978-05-01), Komiyama et al.
patent: 4135066 (1979-01-01), Yamanaka et al.

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