Failsafe module

Details Failsafe module Failsafe module

1994-10-20

1996-10-22

Peng, John K.

Communications: electrical

Audible indication

3403846, 34038473, 310320, G08B 300

Patent

active

055681182

ABSTRACT:
A warning module for use with a motor vehicle having multiple sensor inputs and multiple sensor outputs. The inputs are coupled to sensing circuits for monitoring a condition such as engine temperature. The outputs are coupled to one or more light bulbs or other visual indicators which are activated at a lamp flash frequency. A variable frequency oscillator activates an audible output device, preferably a piezoelectric buzzer. The light output levels are diminished for nighttime use. A plastic housing supports a piezo-electric transducer and reverberation plate and achieves a high sound output.

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patent: 5317305 (1994-05-01), Campman

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