Extended coverage ceiling sprinklers and systems
US5579846A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1994 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Nov 21, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C37/08
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Ceiling sprinklers and sprinkler systems provide extended areas of coverage through a combination of extra large and super large orifices and deflectors which extend radial distributions with acceptable uniform average and absolute distribution densities all around and beneath the sprinklers. Described deflectors are circular and substantially flat, being essentially flat in pendent style and slightly fructoconical in upright style. Slots of alternating length are provided extending inwardly towards the center of the deflector from the circular perimeter to within no more than one-half inch and preferably no more than 0.6 of an inch from the center of the deflector. The upright sprinkler deflector includes central circular planar areas at least one inch and preferably at least 1.2 inch in diameter while the outer annular peripheral portion of such deflectors are coned back towards their supporting tubular bodies at an included cone angle of about one hundred forty degrees or more. Sprinkler systems of the present invention can be installed with closest adjoining pairs of sprinklers and branch lines spaced more than fifteen feet apart when the sprinklers are located within at least …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.