Marine detection apparatus

Details Marine detection apparatus Marine detection apparatus

1976-11-22

1978-10-24

Farley, Richard A.

Communications: electrical

Selective

Monitoring in addition to control

340 1C, 73344, 73362AR, G01S 970, G01S 756, G01K 102, G01K 724

Patent

active

041224280

ABSTRACT:
Marine detection apparatus includes a sound transducer mounted below the water line of a vessel for emitting and receiving sound signals and imperviously sealed within a transducer housing together with a temperature detector for sensing the temperature of the water. A display is provided capable of displaying water depth and water temperature. The water depth reading is proportional to the elapsed time between the transmission and the reception of the sound waves, and the temperature reading is proportional to an elapsed time determined by a timing circuit in which the resistance value of the temperature sensor operates to determine the charging time of a capacitor. The display is of a circular, dial type using lighted spots and a lighted arcuate shaped column to display the depth and temperature.

REFERENCES:
patent: 3253466 (1966-05-01), Chough
patent: 3267413 (1966-08-01), Beebe et al.
patent: 3307143 (1967-02-01), Wyse et al.
patent: 3673552 (1972-06-01), Mross et al.
patent: 3878502 (1975-04-01), Rochelle

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