Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition
Patent
1996-06-13
1998-06-23
Pyon, Harold Y.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
422 99, 422103, 422104, 436180, 7386413, 7386416, 7386418, B01L 302
Patent
active
057701580
ABSTRACT:
A disposable, vented capillary draw device is described that is also capable of use for the syringe pressurized dispensing of liquid benignly drawn. The system includes a vented capillary collection tube for drawing liquid samples by capillary rise in a bubble-free manner. A reversible, positive vent shut-off is provided to help contain the drawn material in the capillary. A reciprocating, loose fitting, syringe plunger arrangement is also provided attached to and operable in the capillary tube. Initial axial displacement of the plunger in the capillary toward the open end is used to initially operate the vent seal or positive vent shut-off device to close the vent and, upon further advancement of the plunger, the plunger forces the liquid material back out of the draw tube.
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Eischen Kathleen A.
Kenney James W.
Diametrics Medical Inc.
Pyon Harold Y.
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