Sonobuoy float inflation and depth selection initiators

Details Sonobuoy float inflation and depth selection initiators Sonobuoy float inflation and depth selection initiators

1982-05-03

1985-01-15

Blix, Trygve M.

Buoys, rafts, and aquatic devices

Buoy

Marker buoy

441 26, 441 30, 441 33, 222 5, 367 4, B63B 2100

Patent

active

044936648

ABSTRACT:
A shape-memory alloy initially configured to have engaging potential for a ance, guillotine or pin connected thereto is wrapped in a heating element powered by current from a water activated battery. When the alloy reaches a specific temperature it silently reverts to a predetermined shape. The reversion force is used to displace a lance to pierce a gas cylinder seal to allow inflation of a float and to cut a retaining loop or withdraw a pin to payout a preset length of hydrophone suspension cable.

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patent: 4186370 (1980-01-01), Cupolo et al.

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