Advanced motor driven impeller pump for moving metal in a bath of molten metal
US6082965A · kind A · utility
100Cited by
3References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1999 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Sep 20, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D7/065
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for moving a stream of molten metal in a bath of molten metal having a housing and steel alloy legs to prevent the housing from rising in the molten metal. The steel legs are protected by tubular shields made of a heat resistant material. The shields each has a lower end attached to the housing and has an inner diameter that is larger than the leg's outer diameter to accommodate the thermoexpansion of the leg. Inert gas is introduced in the space between the steel leg and the shield to form an oxygen-free environment around the leg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.