Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1990-01-17
1991-03-19
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340442, 340539, 340445, 340461, 731464, 731465, 731468, 200 6122, 116 34R, B60C 2300
Patent
active
050014579
ABSTRACT:
An electronic signal device for a set of pneumatic tires of a vehicle includes a plurality of pressure gauges, each respectively attached to the pneumatic tires, each pressure gauge having a cap unit which houses a switching unit responsive to the pressure in the respective tire and a signal transmitting unit electrically connected to the switching unit and activated when pressure in the tire is deficient. Each tire is represented by a binary code which is transmitted to a receiver circuit when said tire is deflated below a predetermined proper pressure. The receiver circuit is found inside the driver room of the vehicle and is electrically connected to a display means. The display means has a display plate with a figure of the vehicle on said display plate, and a plurality of light emitting diodes electrically connected to the receiver circuit, arranged on the figure in such a manner that each light emitting diode corresponds to a specific tire and the relative position of the tire with respect to the vehicle body. The display means further includes an elongated casing which houses the display plate and is rotatably mounted to a support member. A sound alarm unit, similarly connected to the receiving circuit, sounds whenever the tire is deflated below a predetermined proper pressure.
REFERENCES:
patent: 4319220 (1982-03-01), Pappas et al.
patent: 4334215 (1982-06-01), Frazier et al.
patent: 4734674 (1988-03-01), Thomas et al.
patent: 4737760 (1988-04-01), Huang et al.
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