Communications: electrical – Condition responsive indicating system – Specific condition
Patent
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.
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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
Hilpert Wolfgang
Komander Gerhard
Caldwell Sr. John W.
Daimler-Benz Aktiengesellschaft
Hjerpe Richard
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