Acoustic signal transmission between a tractor and trailer withi

Details Acoustic signal transmission between a tractor and trailer withi Acoustic signal transmission between a tractor and trailer withi

1990-08-27

1992-02-25

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 92, 188 111, 381154, B60T 888, H04R 1700

Patent

active

050907794

ABSTRACT:
A technique for acoustically communicating through existing air brake lines between a tractor and a trailer. The diagnostic status of the trailer antilock system is communicated via acoustic signals from the trailer antilock system through the air brake lines of the trailer and into the tractor air brake line. A piezo crystal located in the tractor air brake line converts the acoustic signal into an electrical signal which may be used to illuminate a lamp providing a display on the tractor dashboard.

REFERENCES:
patent: 4565258 (1986-01-01), Butler et al.
patent: 4917443 (1990-04-01), Kramer et al.

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