Retrieval of articles from beneath the surface of a body of wate

Details Retrieval of articles from beneath the surface of a body of wate Retrieval of articles from beneath the surface of a body of wate

1980-11-19

1982-06-29

Howell, Kyle L.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

73170A, G01N 104

Patent

active

043367097

ABSTRACT:
Equipment for raising to the surface of a body of water a retrievable article. A cable extends downwardly, and the article is held to the cable at a selected depth. A buoyancy device with a floodable cavity and a gas supply tank travels down the cable to the article where it magnetically attaches to it, and releases gas to blow the cavity, providing positive lift to the surface for the combination. The retrievable article may be a sediment collector whose apertures are closed by the buoyancy device.

REFERENCES:
patent: 1200404 (1916-10-01), White
patent: 3189922 (1965-06-01), Margot
patent: 3242740 (1966-03-01), Niskin
patent: 3256539 (1966-06-01), Clark
patent: 3367190 (1968-02-01), Bieri
patent: 3374494 (1968-03-01), Hunley
patent: 3512493 (1970-05-01), Hallanger
patent: 3715913 (1973-02-01), Anderson
patent: 3793889 (1974-02-01), Niskin
patent: 3815422 (1974-06-01), Niskin
patent: 3952349 (1976-04-01), Erath

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