Reliable trap filling device for siphon apparatus
US4249559A · kind A · utility
Inventor
Key dates
| Filing date | May 30, 1979 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | May 30, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/4516
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a siphon apparatus having at least two legs with a liquid trap therebetween, a liquid holding chamber is provided which communicates with the liquid trap through a restrictive orifice and which fills the liquid trap after the siphon is used, thereby insuring a liquid seal for the next use of the siphon. An overflow device is provided for the liquid trap which cooperates with a trigger mechanism to fill the liquid trap to a predetermined level at the same time assuring the filling of the trigger mechanism. The trigger device may be connected to a plurality of siphons, whereby each siphon flushes simultaneously when a predetermined level is reached in a tank which is to be discharged thereby. Preferably the siphons are conchoidally or spirally shaped, and the holding chamber comprises an inner void thereof. Also the siphon is designed to concentrate head losses near the discharge thereof by bell-shaping the inlet, progressively reducing the cross-sectional area of the legs of the siphon toward the outlet, and by reducing the radius of elbows toward the outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.