Valve for fire suppression device
US6032745A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1998 |
| Grant date | Mar 7, 2000 |
| Priority date | — |
| Expiry date | Jul 23, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C13/64
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A fire suppression valve for use with a cannister of fire suppression material. The valve has a housing with a central connection for attachment to the cannister and communicating with a central chamber. The central chamber has a relatively smaller outlet port on one side and diametrically opposite thereto a concentric and relatively larger piston port. A two-stage piston operates inside the central chamber to control access to the outlet port. In the closed position, the pressure of the fire suppression material serves to bias the two-stage piston toward the open position. The two-stage piston is oriented along an axis that is angled with respect to the orientation of the central connection, to thereby minimize the amount of vertical space required by the valve maximize cannister size for a given space limitation. The outlet port and piston port are preferably formed by a gun reaming process which produces highly finished and concentric sealing surfaces which more reliably engage the piston end and actuating piston. The actuating piston is adapted for use with dry powder suppression material by carrying a piston gasket having a scraper member for clearing the piston port to allow …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.