Liquid collector pressurizing and filtering means

Details Liquid collector pressurizing and filtering means Liquid collector pressurizing and filtering means

1990-10-22

1992-08-18

Dawson, Robert A.

Liquid purification or separation

Flow, fluid pressure or material level, responsive

Check valve

210258, 2104161, 210418, 210419, 210423, 210435, 210445, 210446, 210447, 73863, 7386435, 7386462, 7386463, 7386474, 7386483, 7386491, G01N 100

Patent

active

051396548

ABSTRACT:
Apparatus for quickly taking and filtering liquid taken from a body of liquid comprises a bailer for taking and containing a sample of the liquid therein. The bailer has an upper end portion adapted for quickly disconnecting and connecting a liquid pressurizing device including a hand operated fluid pump or regulated tank of compressed gas. A lower end portion of the bailer is provided with a ball or poppet check valve controlling the flow of liquid to and from the bailer by way of an internal opening adapted for quickly connecting and disconnecting a filtering unit to and from the bailer. The filtering unit has a disposable filter element inside of a housing attached to an upper adapter with a liquid passage therein quickly inserted into sealing engagement with the internal opening of the bailer and which opens the ball check valve. A lower end of the filter housing is connected by another adapter into which a flow control valve is quickly connected to and disconnectable from. A tubular needle or tube extends from the lower end of the flow control valve for the purpose of piercing the sealable septum of a vial and directing the filtered liquid into the vial or another suitable container for further analysis.

REFERENCES:
patent: 4430213 (1984-02-01), Isikawa
patent: 4590810 (1986-05-01), Hunkin et al.
patent: 4807707 (1989-02-01), Handley et al.
patent: 4928541 (1990-05-01), Toon et al.
patent: 4949582 (1990-08-01), Vollweiler

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