Fluid pressure controlling solenoid valve
US4679589A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 19, 1986 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Sep 19, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87217
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A fluid pressure controlling solenoid valve is disclosed for producing an oil pressure which drives a brake pressure controlling piston in a manner such that an brake oil pressure applied to the brakes associated with wheels in response to the depression of a brake pedal is adjusted to a low value in order to prevent a high slip ratio of wheels with respect to a road surface and to a high value when the slip ratio is reduced. A switching solenoid valve is assembled on the upper end face of an intermediate member formed of a magnetic material and having a first fluid path extending therethrough from its upper to its lower end face for selectively connecting the first fluid path with a reduced pressure input port and a high pressure input port. A switching solenoid valve which opens or closes the connection between the first fluid path and the output port is assembled on the lower end face of the intermediate member. The solenoid valve has an orifice of a reduced diameter which maintains a communication between the first fluid path and the output port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.