Fluid pressure switch adapted for low fluid pressure and throughputs
US5144102A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Sep 13, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/8326
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fluid switch for measuring throughput in a fluid line, the fluid switch having an electrical switch and an associated membrane subjected to the pressure of the fluid introduced into a working chamber of the fluid switch. The fluid pressure causes simultaneous opening of a fluid outlet of the fluid switch and of contacts of the electrical switch. Thereby, the number of openings and closings of the switch will be representative of the number of openings of the fluid outlet and the throughput of the fluid. The membrane carries a projection serving as a valve which cooperates with a valve seat on the fluid outlet and the valve is coupled through a tappet to the electrical switch to open the switch when the valve is lifted off the valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.