Current limiting circuit and electronic fuse for use in foam injection fire fighting systems
US5764463A · kind A · utility
22Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1996 |
| Grant date | Jun 9, 1998 |
| Priority date | — |
| Expiry date | Sep 6, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C5/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A fire extinguishing system in which a calculated quantity of a liquid chemical foamant is introduced into the main water stream being directed at a fire equipped with a protective circuit for limiting the amount of average current flowing within a motor driving a fluid pump used to inject the chemical foamant, in addition to an electronic fuse circuit for automatically shutting off the power being supplied to the low-level electronics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.