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1. US5071043 - Stopper rod with an improved gas distribution

Office
United States of America
Application Number 07555570
Application Date 19.07.1990
Publication Number 5071043
Publication Date 10.12.1991
Grant Number 5071043
Grant Date 10.12.1991
Publication Kind A
IPC
B22D 11/10
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
11Continuous casting of metals, i.e. casting in indefinite lengths
10Supplying or treating molten metal
B22D 41/14
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
41Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
14Closures
B22D 41/18
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
41Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
14Closures
16stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
18Stopper-rods therefor
CPC
B22D 41/186
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
41Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
14Closures
16stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
18Stopper-rods therefor
186with means for injecting a fluid into the melt
Applicants Vesuvius Crucible Company
Inventors Dumazeau Claude
Dubois Pascal
Agents Webb Burden Ziesenheim & Webb
Priority Data 8910588 03.08.1989 FR
Title
(EN) Stopper rod with an improved gas distribution
Abstract
(EN)

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.