Method and apparatus for combining liquids
US5899362A · kind A · utility
34Cited by
4References
14Claims
0Family size
Inventor
Key dates
| Filing date | May 1, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | May 1, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2101/36
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A proportional flow controller, having a combination of common-diameter, viscosity-insensitive orifices, accurately combines two or more liquids, for a range of flow rates. A common pressure is applied to all liquids causing equal pressure drops for the orifices, thereby ensuring stable flow ratios. Control is achieved without moving parts or electrical components, for flow rates low enough for spray painting and adhesive application. A flow passage junction, downstream of all orifices, provides for combining and discharging the liquids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.