Flow controller
US6348098B1 · kind B1 · utility
36Cited by
14References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2000 |
| Grant date | Feb 19, 2002 |
| Priority date | — |
| Expiry date | Jan 20, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/776
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A control system for digitally monitoring and/or controlling pressure to a pneumatic load such as a stop/suckback valve. Pressure is sensed in the pneumatic fluid input lines to the pneumatic load, and a closed loop control is used to maintain the pressure at a predetermined level. In an alternative embodiment, the control system is used to ensure equal dispensing in multi-point dispense apparatus. Thus, pressure is sensed downstream of each valve in fluid communication with a respective nozzle. Any pressure differential detected is corrected by appropriate valve adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.