Solenoid operated valve assembly
US5058857A · kind A · utility
Inventor
Key dates
| Filing date | Feb 22, 1990 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Feb 22, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A valve assembly for an energy transfer unit comprises a source of hydraulic fluid, a reciprocating valve member reciprocable from an open position to a closed position, a slidable sleeve assembly whereby the hydraulic fluid is selectively allowed to force the valve member into the open position or into the closed position, and a solenoid, for selectively operating the slidable valve assembly to provide for the open or closed position. The slidable sleeve assembly comprises a first sleeve half portion and a second half portion, each sleeve half portion having at least one fluid-passing aperture defined therein. Two chambers are provided, an upper chamber and a lower chamber, for selectively receiving pressurized fluid therein. Whether the valve member is in the closed position or in its open position depends upon whether or not fluid is entering or exiting the respective upper chamber and lower chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.