Flotation device

Details Flotation device Flotation device

1981-10-05

1983-09-27

Basinger, Sherman

Buoys, rafts, and aquatic devices

Buoy

Inflatable

244138R, 343709, 441 33, B63B 2152

Patent

active

044066317

ABSTRACT:
An air launchable sonobuoy having two separate liquid chemicals which react pon mixing to form an expanded, rigid foam flotation device. Upon deployment in the air, windflaps release a preloaded plate within a submersible housing and urge the chemicals to mix and foam in an elastic envelope. After water impact, an orifice in the housing permits water to fill the voids at a rate sufficient to allow the housing to remain afloat until foaming and erection of an antenna within the envelope is complete. As the envelope expands, a latch releases it from the housing and permits the housing when flooded to sink to the desired depth determined by the payout length of a cable within the housing connected to the flotation device.

REFERENCES:
patent: 3059253 (1962-10-01), Sager
patent: 3081466 (1963-03-01), Bailey
patent: 3093808 (1963-06-01), Tatnall et al.
patent: 3098229 (1963-07-01), Raabe
patent: 3150387 (1964-09-01), Look et al.
patent: 3278956 (1966-10-01), Maes
patent: 3382514 (1968-05-01), Boscov
patent: 3474474 (1969-10-01), Busenkell et al.
patent: 3488783 (1970-01-01), Lockwood, Jr.
patent: 4186370 (1980-01-01), Cupolo et al.

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