Method and apparatus for extending the operating range of a cond

Details Method and apparatus for extending the operating range of a cond Method and apparatus for extending the operating range of a cond

1975-09-24

1977-04-12

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340259, 330 26, 731465, B60C 2302

Patent

active

040178269

ABSTRACT:
Apparatus and method for extending the operating range of a condition monitoring system that detects the occurrence of an abnormal condition on a first member moving relative to a second member; the system including a sensor circuit on the first member adapted to be responsive to the condition being monitored and a monitoring circuit on the second member adapted to being affected by the proximate presence of a close-circuited sensor circuit to provide detection signals to circuit means for indicating the condition of the moving member indicative of the open or close-circuited sensor circuit. The system is characterized by a monitoring circuit operating at the threshold of an oscillatory and nonoscillatory state and a close-circuited sensor circuit configuration that affects the monitoring circuit irrespective of its operational state.

REFERENCES:
patent: 3665387 (1972-05-01), Enabnit
patent: 3831161 (1974-08-01), Enabnit

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