Stopper rod with an improved gas distribution
US5071043A · kind A · utility
3Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1990 |
| Grant date | Dec 10, 1991 |
| Priority date | — |
| Expiry date | Jul 19, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D41/186
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The stopper rod for regulating the flow of a liquid has a body traversed by an axial channel and having at one end a porous nose fed with gas from the channel. The nose has a free space in the form of a hemisphere-shaped slot or lattice network communicating with the channel for delivery of gas thereto. Preferably, a plurality of spaced-apart bridges of solid material connect the two faces of the free space in order to increase the strength of the porous nose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.