Valve
US4050477A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 31, 1975 |
| Grant date | Sep 27, 1977 |
| Priority date | — |
| Expiry date | Oct 31, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K11/056
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A valve including a ball vibrated by a solenoid operated spring biased plunger wherein the ball is moved against one end of each of inlet and exhaust ports alternately in a somewhat oversized cavity to control, for example, the pressures on respective opposite sides of a displacement adjustable piston connected from the inlet port and cavity. The stroke of the piston may be made adjustable, if desired. The solenoid is energized with an A.C. source that has an adjustable frequency. An outstanding feature resides in the use of a needle valve at the other end of the inlet port. Tayloring can thereby be performed, whereas the same had not been otherwise possible in the prior art.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.