Compressed air foam generator
US6276459A · kind A · utility
Inventors
Key dates
| Filing date | Feb 1, 2000 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Feb 1, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C5/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A foam generating device includes a source of compressed gas and a source of liquid adapted to produce a foam. A gas operated pump such as a diaphragm pump is provides which has a gas inlet communicating with the compressed gas source to drive the pump, a gas exhaust, a liquid inlet and liquid discharge to discharge said liquid from the pump. An injector disposed at the discharge side of the pump and is in communication with the gas outlet of the pump to inject exhaust gas into the liquid discharged by the pump to aerate the liquid and produce a foam. The device may be portable, vehicle mounted or stationary. The liquid may be water with an injector to inject a foaming agent into the water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.