Fluidic switch
US4258753A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 1979 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | May 18, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2229
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluidic amplifier or switch for supplying pulses of a power gas to be controlled which is insensitive to load impedance or back pressure. One arm of the fluidic switch comprising part of the gas injection path is coupled to a working outlet and the other arm is coupled through a sonic orifice to a vent outlet. An orifice is provided in the downstream end of the power gas injection path, the injection pressure is maintained at preferably at least about twice the maximum back pressure and a substitute gas is injected into the arm of the fluidic switch not carrying the power gas to be controlled. The two gases are each alternately supplied to the working outlet and the vent outlet. When the power gas to be controlled is supplied to the working outlet, the substitute gas is supplied to the vent outlet and when the substitute gas is supplied to the working outlet, the power gas to be controlled is supplied to the vent outlet to maintain the pressure constant across the working outlet orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.