Device for detecting a trailer coupled onto a tractor vehicle

Details Device for detecting a trailer coupled onto a tractor vehicle Device for detecting a trailer coupled onto a tractor vehicle

1986-06-23

1988-05-10

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

340687, 362 61, G08B 2100

Patent

active

047438886

ABSTRACT:
A device for detecting a trailer coupled onto a tractor vehicle which, incorporates the rear or brake or license plate illuminating lights of the trailer and by corresponding combination of the signals applied at a logic element, an output signal for triggering the indication "trailer coupled" is achieved.

REFERENCES:
patent: 3059105 (1962-10-01), Roe et al.
patent: 3710370 (1973-01-01), Quilici et al.
patent: 3792432 (1974-02-01), Ellis et al.
patent: 4106081 (1978-08-01), Turturici
patent: 4286309 (1981-08-01), Rasinski
patent: 4430637 (1984-02-01), Koch-Ducker et al.
patent: 4593264 (1986-01-01), Engle

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