Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1978-04-14
1980-04-22
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
328 1, 307218, 307293, H03k 1728, H03K 1924
Patent
active
041997271
ABSTRACT:
Malfunction Detector apparatus has a plurality of sensing means, each sensing means is designed to provide a signal when an operation is performed and a different signal when the operation is not performed. Circuitry is designed to initiate timing and if all sensing means do not signal `operation performed` by the end of a timed interval, then to provide a `fault` signal.
REFERENCES:
patent: 3560863 (1971-02-01), Baumoel
patent: 3836859 (1974-09-01), Behrens et al.
patent: 3939361 (1976-02-01), Aidala et al.
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