US3845943A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory pouring tube
Assignee: Individual
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Filing: 1973-10-26
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Granted: 1974-11-05
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Expires: 1993-10-26
Abstract
Abstract A pouring tube for enclosing a stream of liquid metal as it passes from a tundish to a receiver such as a continuous-casting mold. The tube is formed of a refractory and is suspended from a holder with a clip. The invention is in the addition of a metal band encircling the refractory in the region engaged by the clip. The band distributes the load and prevents breakage of the refractory.
Inventors
- 👤 J Shapland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:53
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/50; B22D41/502
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
101 words
In a combination which includes a holder, a pouring tube, and means attaching said tube to said holder, said holder comprising a refractory block, a metal frame around at least a portion of said block, and a skirt depending from said frame; said tube being formed of refractory, the upper end portion of which is received in said skirt; said attaching means comprising clip means extending through said skirt and engaging said tube; the improvement comprising: a metal band encircling the refractory of said tube and having opposed slots receiving said clip means; and means fixing said band to said refractory.
Claim 2
Dependent Claim
101 words
In a combination which includes a holder, a pouring tube, and means attaching said tube to said holder, said holder comprising a refractory block, a metal frame around at least a portion of said block, and a skirt depending from said frame; said tube being formed of refractory, the upper end portion of which is received in said skirt; said attaching means comprising clip means extending through said skirt and engaging said tube; the improvement comprising: a metal band encircling the refractory of said tube and having opposed slots receiving said clip means; and means fixing said band to said refractory.
Claim 3
Dependent Claim
20 words
An improvement as defined in claim 1 in which said refractory has circumferential grooves under the slots in said band.
Claim 4
Dependent Claim
34 words
An improvement as defined in claim 1 in which said band is split and welded at the split, and said refractory has a circumferential groove and said band is crimped to engage said groove.
Claim 5
Dependent Claim
38 words
An improvement as defined in claim 1 in which said band is split and held in a tie, and said refractory has a circumferential groove, and said band is flanged at its lower edge to engage said groove.
Claim 6
Dependent Claim
16 words
A combination as defined in claim 1 in which said clip means is a U-shaped clip.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |