Alarm test device for a sprinkler system
US4643224A · kind A · utility
43Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1985 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Sep 4, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8782
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An alarm test device for a sprinkler system incorporates test and drain valves, together with a sight glass and a metering orifice into a single test valve, with the option of employing a plug valve as the test and drain valves, and the further option of employing a combined sight glass and metering orifice as the plug valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.