Electromagnetic valve
US4947895A · kind A · utility
10Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1989 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Apr 21, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2191
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An electromagnetic valve for use for discharge of molten metal from a container comprises a body (1) providing a discharge passage (2, 3) surrounded by an electrical induction coil (4), the passage having a first portion (2) adjacent the container having a radius greater than that of a second portion (3) extending from the first portion to the discharge end of the passage, whereby the frequency of the electric current supplied to the coil (4) can be chosen independently of the passage discharge diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.