Stream propelled rotary stream sprinkler unit with damping means
US4815662A · kind A · utility
79Cited by
6References
15Claims
0Family size
Inventor
Key dates
| Filing date | Nov 23, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Nov 23, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S239/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rotary stream sprinkler unit comprises a body having a water flow passage in which is disposed a flow control unit having one or more passages configured to control the volume and pressure of a stream which strikes and rotates a rotary distributor head rotatably mounted at the outlet of the housing for dividing each stream into a plurality of final streams and rotating each of the final streams through a selected arc during the rotation of the rotary head with a damping device connected to the rotary head for controlling the rotational velocity thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.