Foam proportioning system with low-end controller
US7997348B2 · kind B2 · utility
11Cited by
29References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 2009 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Jul 16, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C5/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Embodiments of the invention provide a foam proportioning system. The foam proportioning system can include a foam pump, at least one foam line, a divert, and at least one controller. The divert can direct a portion of a flow of a liquid foam concentrate downstream of the foam pump back through the foam pump. The controller, which can be in communication with the foam pump and the divert, can be configured to automatically maintain a minimum flow rate of the liquid foam concentrate through the foam pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.