Water sampler device

Details Water sampler device Water sampler device

1976-06-01

1977-07-26

Queisser, Richard C.

Measuring and testing

Measuring vessel

73300, G01N 110

Patent

active

040374777

ABSTRACT:
A water sampler device having a cylindrical container open at each end with a ball valve mounted at the openings adapted to rotate about their axis from an initially closed position when the device is launched into a body of water to prevent the contamination of the container by the surface waters. Upon descending, a water pressure operated valve opens to equalize the pressure inside the container with that of the outside water pressure and causes the simultaneous rotation of the valves to an open position to permit water to flush through the device until it reaches the predetermined depth at which the sample is to be obtained when the valves are rotated again to a closed position. As the sampler device is being brought up to the surface, a further pressure operated valve permits the bleeding of water from within the device to equalize the pressure within the device with that of the surrounding area.

REFERENCES:
patent: 1838729 (1931-12-01), Andrews
patent: 2314372 (1943-03-01), Spilhaus
patent: 2391978 (1946-01-01), Kahl
patent: 3161053 (1964-12-01), Bell
patent: 3563265 (1971-02-01), Graham
patent: 3576309 (1971-04-01), Zawacki
patent: 3841156 (1974-10-01), Wolfe

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