Rotary sprinkler
US5172864A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Jul 1, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B1/0856
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rotary sprinkler of the kind wherein an outlet nozzle having an integrally formed impeller element is adapted to be driven by a drive ball located within a drive ball enclosure wherein a first major axial portion of the side wall extends from the base wall of the enclosure to an intermediate peripheral position thereof and defines a first angle .alpha..sub.1 with respect to a normal to the base wall while a second minor axial portion of the side wall extends from the intermediate peripheral position to an edge rim of the enclosure and defines a second angle .alpha..sub.2 with respect to a normal to the base wall, .alpha..sub.2 being substantially greater than .alpha..sub.1, the impact element being spaced from the intermediate peripheral position by a distance which is not substantially less than one half the diameter of the drive ball.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.