Towing hitch alignment director

Details Towing hitch alignment director Towing hitch alignment director

1978-09-08

1980-06-03

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33 1PT, 33139, 280477, 340 52R, B60D 0114

Patent

active

042054532

ABSTRACT:
A device is provided for sensing the magnitude and direction of angular departures of a towing vehicle from a path which will bring a hitch mounted thereon into engageable relationship with a hitch mounted on a trailer, for registering the changing distance between such hitches, and for indicating the angular values and direction of such departures and the distance between hitches to an operator of the towing vehicle. The construction permits approach of the towing vehicle toward the trailer from any access angle without requiring adjustment of the device for different angles of approach and without introducing error. Automatic scale expansion of the distance indication occurs as the distance between the vehicles shortens.

REFERENCES:
patent: 2736885 (1956-02-01), Thompson
patent: 2906179 (1959-09-01), Bower
patent: 3731274 (1973-05-01), Green
patent: 3734539 (1973-05-01), Salmi
patent: 3780440 (1973-12-01), Taylor
patent: 3938122 (1976-02-01), Mangus
patent: 4030775 (1977-06-01), Hill

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