Trailer hitch monitor

Details Trailer hitch monitor Trailer hitch monitor

1976-10-07

1978-11-28

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

280432, 340 52R, G08B 2100

Patent

active

041278550

ABSTRACT:
An electrical circuit for monitoring the connection between a trailer and a trailer hitch. An electrical conductor is connected to the tongue of the trailer and the trailer hitch is grounded. A visual indicator is in series between the electrical conductor and a power source to provide an indication of trailer coupling as long as electrical continuity is maintained by the connection of the trailer to the hitch. An audible warning device and switch are in parallel with the visual indicator to provide a warning when electrical continuity is broken.

REFERENCES:
patent: 2564520 (1951-08-01), Blasdell
patent: 3710370 (1973-01-01), Quilici et al.
patent: 3792432 (1974-02-01), Ellis et al.
patent: 4008466 (1977-02-01), Smith

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