Cross-contamination isolator

Details Cross-contamination isolator Cross-contamination isolator

1978-07-19

1980-04-22

Chamblee, Hugh R.

Fluid handling

Diverse fluid containing pressure systems

Gas pressure storage over or displacement of liquid

119 725, 119 75, 137454, 1376142, A01K 700, A01K 706

Patent

active

041990005

ABSTRACT:
A liquid isolator to prevent cross-contamination in the supply of liquid to and between animal racks. The isolator comprises cylindrical concentric tubes arranged to form a liquid storage chamber, a standpipe in the chamber, and a liquid entry tube within the standpipe. Near their upper ends, a liquid transfer port is provided between the standpipe chamber and the liquid storage chamber. An air lock is formed between the liquid transfer port and the level of any liquid in the storage chamber. The air lock isolates liquid in the standpipe chamber from the liquid in the storage chamber. Check valves are also provided in a liquid inlet at the top of the isolator and a liquid outlet at the bottom of the isolator, thus to prevent back flow through the isolator.

REFERENCES:
patent: 2115499 (1938-04-01), Salvoni
patent: 2999499 (1961-09-01), Willet
patent: 3228377 (1966-01-01), Grassano
patent: 3476088 (1969-11-01), Smith
patent: 3563264 (1971-02-01), Boegli
patent: 3993066 (1976-11-01), Virag
patent: 4136692 (1979-01-01), Goldowsky

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