Method and apparatus for high capacity production of finished aqueous foam with continuously adjustable proportioning
US5803596A · kind A · utility
Inventor
Key dates
| Filing date | May 17, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | May 17, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/26
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An apparatus for continuous production of finished foam material, in which the proportions of the constituents are monitored and continuously adjustable during operation of the machine. The liquid components are metered by positive-displacement, progressive-cavity, screw-type pumps driven by variable speed motors. Rates of flow are monitored by flow meters, and the relative proportions of the constituents can be closely adjusted by varying the speeds of the pump drive motors and observing the flow meter readouts. The finished foam produced by the apparatus may be used, for example, for the preparation of foamed cement grouts or for fighting fires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.