Tests of electrohydraulic switching valves with fluidic ball elements
US4919497A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1988 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Aug 3, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K31/0651
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A magnetic valve with reversible flow for use in anti-skid brake systems (ABS) has an armature displaceably supported in a valve housing within a control coil. A sealing element is moved by the armature and a stationary valve seat is associated with the sealing element. The armature includes a bottom which communicates via openings with an inflow region including the sealing element, a sealing element holder, and a valve body. The sealing element formed as a sealing ball and the sealing element holder formed as a perforated disk are embodied such that within predetermined stroke and flow ranges, an aspiration effect due to the flowing medium ensues, and a retaining element provided in the form of a permanent magnet acts upon the armature and the retaining element is overcome upon electrical triggering of the magnetic valve, resulting in a large flow cross section for normal braking, and a reduced flow cross section in ABS operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.