Communications: electrical – Selective – Having indication or alarm
Patent
1975-09-18
1977-04-26
Caldwell, John W.
Communications: electrical
Selective
Having indication or alarm
200 6125, B60C 2304
Patent
active
040204561
ABSTRACT:
A device including a detector means for the wheels of a vehicle to detect a reduction in the tire air pressure below a specified level, alarm holding circuits which may be operated under the control of the detector to energize an alarm device and hold it in the energized state, and a reset signal producing circuit operable at the vehicle speeds exceeding a predetermined level for intermittently producing a signal to reset the alarm holding circuits. The device informs the driver of any unusual reduction in tire air pressure and of the range of vehicle speed in which it is dangerous to drive with such reduced tire air pressure.
REFERENCES:
patent: 3526873 (1970-09-01), Burt
patent: 3715719 (1973-02-01), Sugiyama
Caldwell John W.
Nowicki Joseph E.
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