Digital flow control system
US4709858A · kind A · utility
14Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | Mar 14, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87692
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An arrangement for controlling the flow of fluid in which the fluid is allowed to flow through a selected number of parallel paths of various flow capacities as determined by restricting orifices and cutoff valves. Accurate volume/length of fluid is dispensed at variable velocities by controlling both applicator velocity and flow rate. An arrangement is also provided for controlling the shape of the deposited fluid employing controlled air flow confinement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.