Rotary stream sprinkler unit with rotor damping means
US4971250A · kind A · utility
Inventor
Key dates
| Filing date | Dec 1, 1989 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Dec 1, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B15/74
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rotary stream sprinkler unit comprises a housing 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 self-propelled 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 pressure compensated damping device in the housing connected to the rotary head by means of a shaft supported by a resilient member at the outlet for controlling the rotational velocity thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.