Flow control structure
US3941150A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | May 31, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7792
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A flow control structure which is primarily intended to be utilized as a pressure compensating emitter in agricultural watering or irrigation can be constructed utilizing a housing having a flow control member located therein. The housing employed has an internal cylinder connected by a passage leading to a valve seat. The flow control member extends from the cylinder to adjacent to the valve seat. The extremity of the flow control member within the cylinder is formed as a piston so that the flow control member may be moved by fluid pressure. A channel means connects this first extremity of the flow control member with the interior of the passage at a point which is adjacent to and spaced from the other extremity of the flow control member. This other extremity is shaped so as to cooperate with the valve seat in order to limit flow between this other extremity and the valve seat in accordance with the position of the flow control member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.