Valve for self-maintaining poultry waterer
US4254794A · kind A · utility
9Cited by
12References
2Claims
0Family size
Inventor
Key dates
| Filing date | Jan 2, 1979 |
| Grant date | Mar 10, 1981 |
| Priority date | — |
| Expiry date | Jan 2, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/7485
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a poultry watering system having a float-controlled valve for maintaining a desired water level in a trough, leakage through the valve from an overhead supply line, which may occur when the water supply is cut off is effectively prevented without reducing sensitivity of the float by the provision of spring means located within the interior of a valve housing and acting on the end of the float stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.