Communications: electrical – Selective – Having indication or alarm
Patent
1975-08-01
1977-01-18
Waring, Alvin H.
Communications: electrical
Selective
Having indication or alarm
200 6125, 200 82R, 335205, B60C 2302
Patent
active
040042715
ABSTRACT:
A vehicle pneumatic tire low pressure warning system including a low pressure air switch carried on the vehicle rotating wheel assembly which compares a reference pressure and the tire pressure and couples the tire air to an actuator on the rotating wheel assembly when the difference exceeds a specified amount. The tire air operates the actuator to position a magnet to actuate a reed switch sensor on a stationary member of the vehicle. A signal is provided in response to the reed switch actuation to warn the vehicle operator of the low tire pressure.
REFERENCES:
patent: 3873787 (1975-03-01), Nozi
Haven Harold A.
Stewart John A.
General Motors Corporation
Hill Warren D.
Waring Alvin H.
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