Boat launching alert device

Details Boat launching alert device Boat launching alert device

1976-03-09

1976-11-30

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340244B, 116118R, G08B 2100

Patent

active

039952517

ABSTRACT:
A pivotally mounted float that moves when a trailer contacts water causing the closing of a pair of electrical contacts causing a horn to sound when a car is being driven in reverse.

REFERENCES:
patent: 3585582 (1971-06-01), Dove
patent: 3821699 (1974-06-01), Marus et al.

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