Flow regulators
US3948289A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1974 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | Jun 20, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7785
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
It is known to construct fluid dispensing structures which utilize tubes or conduits which expand or contract in cross-section in accordance with the internal pressure of a fluid within such a tube or conduit in combination with one or more flow control members mounted on such a tube or conduit. These devices are constructed so that there is relative motion between such a tube or conduit and such a flow control member as the tube or conduit changes in cross-sectional configuration. Structures of this type may be modified so that they are usable in providing a relatively constant discharge of a fluid regardless of changes in the fluid pressure within such a tube or conduit by utilizing a pressure compensating spring in combination with each flow control member used. The use of such springs makes flow regulators in accordance with the invention particularly desirable for use in dispensing water in agricultural watering or irrigation applications where there may be a variation in the internal pressure within a tube or conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.