Foam dispensing system for a foamable liquid
US5431345A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1994 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | May 31, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/23
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A foam dispensing system for a foamable liquid has a means for producing a spray of droplets in which the spray of droplets has key parameters of: the number averaged mean diameter and the mean axial droplet velocity. The foam dispensing system also has a foaming nozzle connected to the means for producing a spray of droplets that is placed in fluid communication with the spray of droplets. The foaming nozzle has a screen which has a plurality of screen openings having a mesh range from 30 to 60 openings per linear inch. Key parameters of the screen are: the percent open area is from about 35% to 60% and the screen openings are larger than the number average mean diameter of the spray of droplets. When the mean axial droplet velocity is at least 8 m/s, the spray of droplets is transformed into a foamed spray as the droplets pass through the plurality of screen openings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.