Pressure-regulating solenoid valve for a hydraulic circuit
US5915799A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1996 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | May 21, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D16/2024
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pressure-regulating solenoid valve (100) for a hydraulic circuit having at least one generator (300) of pressurized fluid, a pressure receiver (200) and a reservoir (400) of fluid under low pressure. The solenoid valve having an electric coil (10) which interacts with first (12) and second (14) pole pieces and a magnetic body (26). The magnetic body (26) moves under the effect of an actuating force (O) generated by a magnetic field created by the electric coil (10) and a distributor element (30) interacting with a sleeve structure (28) to command communication between a duct (66) connected to the pressure receiver and one of first (54) and second (42) ducts sequentially connected to the generator (300) of pressurized fluid or the reservoir (400) of fluid under low pressure. The solenoid valve (100) has at least one reaction chamber (46) which is permanently in communication with the pressure receiver (200) for receiving a reaction force which added to the actuation force (O) generated by the actuation of coil (10). The reaction force and actuation force are counter to a force (F) generated by an elastic means (34,36) which act on the movable magnetic body (26). The sleeve structu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.