Upright, early suppression fast response sprinkler
US9233266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2013 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Sep 2, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C31/02
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An upright ESFR sprinkler includes a generally tubular body, at least one frame arm, a closure assembly, an unactuated heat responsive trigger assembly and a deflector assembly with a K-factor greater than 14, and preferably 16.8. The passageway extends between inlet and outlet openings. The closure assembly is positioned proximate the outlet so as to occlude the passageway with a Belleville seal. An ejection spring is coupled to the closure assembly. The heat responsive trigger assembly has a Response Time Index of 40 meter1/2-second1/2 (m1/2sec1/2) or less. The deflector assembly includes a nosepiece and a plate like redirecting member. The plate like redirecting member faces the outlet and is coupled to the at least one frame arm and spaced from the outlet opening. The plate shaped member includes a first generally planar portion, a conical second portion, and a third portion extending from the conical second portion. The third portion includes a plurality of tines and a plurality of slots with at least one slot disposed between every two tines so that, when the heat responsive trigger assembly is actuated and the closure assembly is positioned to allow a density of water to flo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.