Acoustical tire pressure valve

Details Acoustical tire pressure valve Acoustical tire pressure valve

1975-11-03

1978-07-25

Caldwell, Sr., John W.

Communications: electrical

Selective

Having indication or alarm

731468, 116 34R, B60C 2302

Patent

active

041032829

ABSTRACT:
A pressure-responsive signalling valve for use on pneumatic tires is adapted to generate a highly efficient acoustical signal whenever the pressure within the tire falls outside of a predetermined range. The emitted signal is detected by means of an acoustical receiver which, in turn, is coupled to an alarm typically in the form of a warning light or audio device conveniently located within the vehicle to alert the driver. The acoustical valve employs a rolling or flat seal disc diaphragm and a flat sealing arrangement providing a positive sealing action, minimal friction, low hysteresis and extremely precise pressure response characteristics.

REFERENCES:
patent: 1417168 (1922-05-01), Harris
patent: 1467317 (1923-09-01), Harris
patent: 2037969 (1936-04-01), Duty et al.
patent: 3145689 (1964-08-01), O'Neal
patent: 3890595 (1975-06-01), Barabino
patent: 3934223 (1976-01-01), Barabino
patent: 3977355 (1976-08-01), Lorenz et al.

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