Automatic relative droplet charging time delay system for an electrostatic particle sorting system using a relatively moveable stream surface sensing system
US4318483A · kind A · utility
71Cited by
21References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1979 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | Aug 20, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/906
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A novel method and apparatus for automatically setting the time delay for relatively charging droplets in an electrostatic particle sorting system is disclosed. By utilizing a movable sheath sensing means for sensing the light scatter and extinction of this stream, the flow rate and distance to breakpoint are automatically measured and used to calculate and set the timing delay circuitry. This insures that droplet charging at the breakpoint will occur synchronously to produce selective relative charging of those droplets containing particles to be sorted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.