Electronic trailer guide

Details Electronic trailer guide Electronic trailer guide

1991-01-25

1992-03-17

Crosland, Donnie L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340431, 340440, 340686, 340687, 340689, 280DIG14, 180271, 180282, B60Q 100, G08B 2100

Patent

active

050972502

ABSTRACT:
An electronic trailer guide includes sensors and associated logic and display circuitry that serve to present information to the driver of a towing vehicle as to the direction in which he must turn the steering wheel of the towing vehicle to back a trailer into a desired position, as to whether the trailer is tilted to the left or to the right, as to whether, when backing a boat trailer down a boat ramp into a body of water preparatory to launching a boat, the water level has risen to a point beneath the towing vehicle at which there is a risk of damage to the vehicle and, as to whether, when backing a boat trailer down a boat ramp into a body of water, the water has buoyantly lifted the boat off of the trailer so that it may be launched.

REFERENCES:
patent: 3605088 (1971-09-01), Savelli
patent: 3734539 (1973-05-01), Salmi
patent: 3995251 (1976-11-01), Jones
patent: 4187494 (1980-02-01), Jessee
patent: 4938495 (1990-07-01), Beasley et al.

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