Optics: measuring and testing – With plural diverse test or art
Patent
1986-03-05
1987-12-01
McGraw, Vincent P.
Optics: measuring and testing
With plural diverse test or art
324 714, 356 73, 377 11, 377 12, G01N 1512, G01N 1514, G01N 2185
Patent
active
047100214
ABSTRACT:
A method and apparatus for jetting a measured volume of a suspension of particulates such as blood cells or colloids into a single fluid-primed incompletely partitioned transducer chamber in such a way that the dynamic relationship between the priming liquid and the inflowing jet imparts to the suspended particulates the properties of a stable stream line monofile which reliably traverses one or more particulate-identifying and/or analyzing sensing zones. Said transducer chamber has one or more of the following three sources of energy for moving the contained fluids: an easily maintained non-critical pressure differential between the suspension inflow port and an exit line, potential energy stored within the transducer chamber during the priming step, a pump mechanism to propel particulate-free fluid. The measurement period in all such transducers may be defined by monitoring the volume of either the inflowing or displaced outflowing liquid.
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Sheet entitled "Clay Adams ULTRA-FLO 100 Whole Blood Platelet Counter," (vB73 Transducer).
McGraw Vincent P.
Sequoia-Turner Corporation
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