Artificial underwater target

Details Artificial underwater target Artificial underwater target

1956-02-29

1980-04-29

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Sonar counter-measures

114 25, B63G 822, H04K 300

Patent

active

042009200

ABSTRACT:
1. In combination in a free, underwater craft, a hull, means for carrying llast, means for discharging said ballast, depth responsive means, a timer providing two time intervals, control means operated by said timer for actuating said discharging means after a pre-set time interval, and other control means operated by both said timer and said depth reponsive means for actuating said discharge means after a shorter time interval if said craft attains a pre-set depth.

REFERENCES:
patent: 1097700 (1914-05-01), Whiting
patent: 1348152 (1920-08-01), Conlin
patent: 1515195 (1924-11-01), Elia
patent: 1527782 (1925-02-01), Brandt et al.
patent: 1803530 (1931-05-01), King et al.
patent: 2409169 (1946-10-01), Whittaker
patent: 2411393 (1946-11-01), Smith
patent: 2447651 (1948-08-01), Jennings et al.

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