Fire sprinkler apparatus and method
US6533041B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1998 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Aug 23, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA62C37/09
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Fire sprinkler apparatus (11) for use with a drop ceiling (13) of suspended tile (15) or sheetrock having a branch or run pipe (17), and a sprinkler head (26) connected to said branch or run pipe (17) by a drop nipple-reducing coupling assembly (29) which comprises a drop nipple (21), a reducing coupling (25) mounted on the bottom end (21b) of the drop nipple (21), a weld (27) joining the upper end (25b) of the reducing coupling (25) to the bottom end (21b) of the drop nipple (21) with the outer circumference of the reducing coupling (25) being the same size as the outer circumference of the drop nipple (21), and an escutcheon fitting (33) which slides over the drop nipple-reducing coupling assembly (29) for a predetermined distance until it is flush with the bottom surface of the tile (15).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.