Sprinklers
US4290557A · kind A · utility
Inventor
Key dates
| Filing date | Feb 25, 1980 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | Feb 25, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B3/0426
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A sprinkler is described comprising a nozzle formed with an axial bore having an outlet through which the liquid exits in the form of a jet, a spindle extending through the bore and having a smaller outer diameter than the diameter of the bore so as to be laterally movable within the bore, and a deflector mounted on the spindle and having a recess facing, and slightly larger than, the outlet end of the nozzle bore so as to be impinged by the jet issuing from the nozzle thereby to impart rapid lateral movements to the spindle. The deflector is eccentrically mounted on the spindle, and the recess is formed eccentrically of the deflector, such that the impacts of the spindle against the sides of the bore by its lateral movement within the bore impart a rotary movement to the deflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.