Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...
Patent
1980-11-03
1984-12-11
Reeves, Robert B.
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Sorting special items or sorting by methods and apparatus...
209579, 209906, 346 75, 356 39, 356 72, 361226, 364413, B07C 5342
Patent
active
044873204
ABSTRACT:
A particle separator for sorting particles suspended in a liquid according to certain characteristics, including a method of and apparatus for detecting a change in the droplet breakoff point of a liquid jet stream which is subjected to vibrations. The vibrations produce amplitude undulations on the surface of the jet stream. The amplitude of the undulations is monitored or interrogated at a fixed point on the jet stream prior to the breakoff point. A change in amplitude of the undulations at that fixed point produces a signal voltage the value of which is proportional to the amplitude change. This signal voltage may be used (1) to alert the operator that a change has occurred in the point at which the jet stream is breaking up into droplets, (2) to automatically control the intensity of the vibrations for restoring the amplitude of undulation at that fixed point to its original state, or (3) to automatically disable the sorting portion of the apparatus. Any one or any combination of the foregoing three happenings can be utilized.
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H. R. Hulett et al., "Development and Application of a Rapid Cell Sorter" from Clinical Chemistry, vol. 19, No. 8, 1973, pp. 813-816.
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Coulter Corporation
Hibnick Gerald R.
Reeves Robert B.
Roen Stephen A.
Wacyra Edward M.
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