Extracting apparatus

Details Extracting apparatus Extracting apparatus

2008-04-08

2008-04-08

Drodge, Joseph (Department: 1797)

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Fluid pressure responsive

C210S097000, C210S141000, C210S340000, C422S069000, C422S105000, C422S105000, C422S105000, C422S112000, C073S863010

Reexamination Certificate

active

10920440

ABSTRACT:
A mechanism for introducing pressurized air into an extracting cartridge comprises an air pump, an on-off valve, and a pressure sensor for detecting an internal pressure within the extracting cartridge. The on-off valve is turned on in order to introduce the pressurized air into the extracting cartridge. When the internal pressure detected by the pressure sensor has become equal to a predetermined pressure range for a pressurization upper limit, the on-off valve is turned off in order to confine the area within the extracting cartridge in the pressurized state, the pressure being thereby exerted upon a sample liquid, a washing liquid, or a recovery liquid having been injected into the extracting cartridge.

REFERENCES:
patent: 5114858 (1992-05-01), Williams et al.
patent: 5645723 (1997-07-01), Fujishiro et al.
patent: 5844147 (1998-12-01), Fiedler et al.
patent: 6136555 (2000-10-01), Jones
patent: 6881579 (2005-04-01), Hilson et al.
patent: 2001/0020603 (2001-09-01), Moorehead et al.
patent: 2003/0170664 (2003-09-01), Mori et al.
patent: 2004/0189311 (2004-09-01), Glezer et al.

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