Communications: electrical – Land vehicle alarms or indicators – For trailer
Patent
1996-11-25
1999-05-18
Hofsass, Jeffery A.
Communications: electrical
Land vehicle alarms or indicators
For trailer
340531, 34082506, 307 91, G08B21/00
Patent
active
059054336
ABSTRACT:
A trailer communications system (36) is provided. The system (36) includes a trailer transducer unit (22) for location on a trailer (12). A vehicle transducer unit (24) can be located on a vehicle (26, 28, 30) or a stationary object (32). The trailer transducer unit (22) and the vehicle transducer unit (24) may communicate information in the form of acoustic signals broadcast at an ultrasonic frequency in response to a predetermined event.
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HighwayMaster Communications, Inc.
Hofsass Jeffery A.
Trieu Van T.
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