Communications: electrical – Selective – Having indication or alarm
Patent
1976-08-05
1979-01-09
Yusko, Donald J.
Communications: electrical
Selective
Having indication or alarm
731173, 324182, 3403091, 361111, G04F 1000, G08B 2100
Patent
active
041341015
ABSTRACT:
Transistorized electronic timer circuits installed in motorized vehicles indicate the running time of the devices such as automobiles, trucks, motorcycles and the like which have a factory recommended servicing cycle. Because of the delicate nature of the transistors and timer devices and the presence of transient noises in automobile electrical systems, protective circuits were developed to prevent timer failures which might result in failure to meet engine service requirements or, in the case of newer vehicles, emission tests, etc.
REFERENCES:
patent: 3291109 (1966-12-01), Neapolitakis
patent: 3355731 (1967-11-01), Jones, Jr.
patent: 3603880 (1971-09-01), Brecker, Jr. et al.
patent: 3686484 (1972-08-01), Ciemochowski
patent: 3688296 (1972-08-01), Donohue et al.
patent: 3760228 (1973-09-01), Uchida
patent: 3875505 (1975-04-01), Goldberg
patent: 3903736 (1975-09-01), Bissett et al.
patent: 3938128 (1976-02-01), Pidsosny et al.
Air Products and Chemicals Inc.
Moyerman Barry
Nowicki Joseph E.
Simmons James C.
Yusko Donald J.
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