Buoys – rafts – and aquatic devices – Buoy – Marker buoy
Patent
1984-05-14
1985-09-10
Basinger, Sherman D.
Buoys, rafts, and aquatic devices
Buoy
Marker buoy
441 23, B63B 2152
Patent
active
045403708
ABSTRACT:
A retriever for submerged objects is disclosed in which a cap is connected to a canister by a retrieval line, and the canister is in turn connected to an object by an anchoring line. When the object and attached canister are dropped into the water, the water dissolves a dissolvable seal over an aperture in the canister and water is permitted to flow into the interior of the canister and react with carbonate or carbide particles which evolve gas upon reacting with water. Before reaching the particles, however, the water must pass through a compressed cellulose sponge which assists in conveying water to the interior of the canister. The cellulose sponge also expands when damp to seal the aperture against the egress of the evolving gas. The bicarbonate or carbide particles are suspended in a desiccant to diminish the possibility that the water activatable particles will be slowly chemically reacted with atmospheric moisture prior to the time the canister is to be used. A window is also provided in the canister through which the contents of the canister may be viewed to determine if moisture has entered the canister and deactivated its contents.
REFERENCES:
patent: 2785420 (1957-03-01), Kanaley
patent: 3303521 (1967-02-01), Mix
patent: 3407418 (1968-10-01), May et al.
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