Electromagnetically actuated valve for hydraulic brake for motor vehicles
US6113066A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Aug 7, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The valve has a seat valve with a hollow cone-shaped valve seat (28) and a closing member in the form of a segment of a ball. The valve seat is centrally fed by an influx bore that communicates with a pressure fluid inlet. A tappet that has the closing member is engaged by a magnet armature that acts on the seat valve in the closing direction and by a restoring spring that acts on it in the opening direction. The valve, which is embodied as an on-off valve, can be controlled in stable intermediary positions because of the following measures: the sealing diameter of the valve seat has at least 1.3 times the diameter of the influx bore; the cone angle of the valve seat is at most 110.degree.; the magnetic force can be smoothly changed, wherein its course decreases monotonously with an increasing valve opening stroke; the force on the closing member, produced by the pressure fluid and the restoring spring, has a monotonously decreasing course with increasing valve opening stroke, whose inclination is quantitatively greater than that of the magnetic force progression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.