Sampling metering and transfer valve assembly and analyzing syst

Details Sampling metering and transfer valve assembly and analyzing syst Sampling metering and transfer valve assembly and analyzing syst

1994-01-10

1995-10-24

Raevis, R.

Measuring and testing

Sampler, sample handling, etc.

Conduit or passageway section capture chamber

G01N 114

Patent

active

054600553

ABSTRACT:
A multifunctional liquid sampling, metering and transfer valve assembly and the analytical system employing same. The valve assembly is capable of performing all liquid handling functions therewithin. The valve assembly comprises a pair of coaxially arranged valve discs engaged in frictional, sealed face to face disposition and includes plural axially parallel through passageways arranged for selective communication, one disc being rotatable relative to the other. Plural dedicated flow paths are defined by said passageways for metering, storing and delivering precise volume aliquots of sample, of diluent and of lysing reagent (in respect of blood cell study) from sources of said liquids to mixing and/or testing chambers. Vacuum is employed to move the liquids along the dedicated flow paths aiding in preventing leakage from the junctions of the passageways within the valve assembly along the engaged surfaces. Further, the valve assembly is provided with a gimballed mounting coupling the assembly to a stepper motor, said mounting preventing vertorial misalignment of the discs (and passageways) during operation of the valve assembly. programmable control is provided so as to operate the valve assembly in accordance with a preset operational pattern.

REFERENCES:
patent: 3567389 (1971-03-01), Coulter et al.
patent: 3681998 (1972-08-01), Karas et al.
patent: 3948104 (1976-04-01), Stephens
patent: 4152391 (1979-05-01), Cabrera
patent: 4521225 (1985-06-01), Jenkins et al.
patent: 4756201 (1988-07-01), Uffenheimer
patent: 4948565 (1990-08-01), Bemis et al.

Affiliated with

Also associated with

Rating

Sampling metering and transfer valve assembly and analyzing syst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sampling metering and transfer valve assembly and analyzing syst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sampling metering and transfer valve assembly and analyzing syst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1879815