Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...
Patent
1979-08-20
1982-04-20
Rolla, Joseph J.
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Sorting special items or sorting by methods and apparatus...
209579, 209906, 250222PC, 346 75, 356 72, 361226, 364413, B07C 5342
Patent
active
043254837
ABSTRACT:
A novel method is disclosed for detecting and controlling the flow rate of a perturbed, droplet-forming stream in an electrostatic particle sorting apparatus. Detection apparatus is located at two points along the stream, at a first particle sensing point for sensing the presence of particles within a core portion of the stream, and at a second downstream point, preferably the stream breakpoint, for sensing light scatter and extinction characteristics which are proportional to the surface characteristics of the sheath portion of the stream. Changes in phase shift, pulse width, duty cycle, pulse area, or breakpoint location are detected by analyzing these sheath surface-related characteristics. An error signal is produced in response to such changes which drives an electromechanical fluid flow regulator to increase or decrease the fluid flow rate in a direction which tends to minimize the error signal. The flow rate is thus maintained at a reference flow rate setting.
REFERENCES:
patent: 3380584 (1968-04-01), Fulwyler
patent: 3710933 (1973-01-01), Fulwyler et al.
patent: 3761941 (1973-09-01), Robertson
patent: 3769627 (1973-10-01), Stone
patent: 3826364 (1974-07-01), Bonner et al.
patent: 3836912 (1974-09-01), Ghougasian et al.
patent: 3851169 (1974-11-01), Faxvog
patent: 3878519 (1975-04-01), Eaton
patent: 3907429 (1975-09-01), Kuhn et al.
patent: 3907429 (1975-09-01), Kuhn et al.
patent: 3920702 (1975-10-01), Corll
patent: 3941479 (1976-03-01), Whitehead
patent: 3953860 (1976-04-01), Fujimoto et al.
patent: 3963606 (1976-06-01), Hogg
patent: 3982251 (1976-09-01), Hochberg
patent: 4025926 (1977-05-01), Fujimoto et al.
patent: 4045770 (1977-08-01), Arnold et al.
patent: 4047183 (1977-09-01), Taub
patent: 4047183 (1977-09-01), Taub
patent: 4063252 (1977-12-01), Jensen et al.
patent: 4148718 (1979-04-01), Fulwyler
Buehner et al., "Two-Level Ink Jet Deflection Control System", IBM Technical Disclosure Bulletin, vol. 16, No. 10, 3-74.
"Laser Flow Microphotometry for Rapid Analysis and Sorting of Mammalian Cells", Mullaney, et al., Annals New York Academy of Sciences, vol. 267, pp. 176-190.
"Feedback for Synchronized Pressure Jet Using Optical Sensor", IBM Technical Disclosure Bulletin, vol. 16, No. 12, May 1974, pp. 3877-3878.
"Phase Detection on Ink Jet Droplets", IBM Technical Disclosure Bulletin, vol. 16, No. 3, Aug. 1973, p. 880.
Barry Donald E.
Hansen W. Peter
Lombardo Igino
Ciamporcero Audley A.
Ortho Diagnostics Inc.
Rolla Joseph J.
LandOfFree
Method for detecting and controlling flow rates of the droplet f does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for detecting and controlling flow rates of the droplet f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for detecting and controlling flow rates of the droplet f will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1259865