US4022358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vessels for containing molten metal
Assignee: Foseco International Ltd
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Filing: 1975-07-09
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Granted: 1977-05-10
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Expires: 1995-07-09
Abstract
Abstract Vessels for containing molten metal, e.g. tundishes, are formed of a metal case lined with refractory slabs. The slabs are individually replaceable for repair of the lining and are held in place by fixing members passing through the wall or base of the metal case.
Inventors
- 👤 John Henry Courtenay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:24
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/02; Y; Y02; Y02B; Y02B10/00; Y02B10/20; Y02B10/70
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A vessel for containing molten metal comprising a metal base wall and at least one side wall, at least one slab of refractory material lining the base wall, and a plurality of slabs of refractory material lining the side wall, fixing members passing through a wall and engaging at least one of said slabs so as to fix said slab in place, said fixing members permitting the slab fixed thereby to be removed from the vessel independently from the other slabs for repair, and an inner expendable lining of refractory heat-insulating material on said slabs for contact with the molten metal to protect said slabs from wear caused by said metal.
Claim 2
Dependent Claim
111 words
A vessel for containing molten metal comprising a metal base wall and at least one side wall, at least one slab of refractory material lining the base wall, and a plurality of slabs of refractory material lining the side wall, fixing members passing through a wall and engaging at least one of said slabs so as to fix said slab in place, said fixing members permitting the slab fixed thereby to be removed from the vessel independently from the other slabs for repair, and an inner expendable lining of refractory heat-insulating material on said slabs for contact with the molten metal to protect said slabs from wear caused by said metal.
Claim 3
Dependent Claim
41 words
A vessel according to claim 1 wherein the fixing members are projections permanently fixed to the slab which extend through the wall and means on the outside of the wall for engagement with said projections to hold the slab in place.
Claim 4
Dependent Claim
31 words
A vessel according to claim 1 wherein the fixing members are bolts which at their outer ends have heads abutting the side walls and at their inner ends engage the slab.
Claim 5
Dependent Claim
21 words
A vessel according to claim 3 wherein the slab incorporates a plurality of threaded nuts in threaded engagement with the bolts.
Claim 6
Dependent Claim
32 words
A vessel according to claim 1 wherein the fixing members are bolts whose ends remote from the slab are threaded and engage a threaded nut abutting the outer wall of the vessel.
Claim 7
Dependent Claim
34 words
A vessel according to claim 1 wherein between the side walls and the slabs lining the side walls there is an intermediate layer of refractory material having holes through which the fixing members pass.
Claim 8
Dependent Claim
104 words
A tundish comprising a metal base wall and at least one sidewall, at least one slab of refractory material lining the base wall, and a plurality of slabs of refractory material lining the side wall, fixing members passing through a wall and engaging one of said slabs so as to fix said slab in place, said fixing members permitting the slab fixed thereby to be removed from the vessel independently from the other slabs for repair, and an inner expendable lining of refractory heat-insulating material on said slabs for contact with the molten metal to protect said slabs from wear caused by said metal.
Claim 9
Dependent Claim
104 words
A tundish comprising a metal base wall and at least one sidewall, at least one slab of refractory material lining the base wall, and a plurality of slabs of refractory material lining the side wall, fixing members passing through a wall and engaging one of said slabs so as to fix said slab in place, said fixing members permitting the slab fixed thereby to be removed from the vessel independently from the other slabs for repair, and an inner expendable lining of refractory heat-insulating material on said slabs for contact with the molten metal to protect said slabs from wear caused by said metal.
Claim 10
Dependent Claim
12 words
A tundish according to claim 7 wherein the slabs comprise aluminous concrete.
Claim 11
Dependent Claim
13 words
A tundish according to claim 7 wherein the slabs comprise refractory fibre reinforcement.
Claim 12
Dependent Claim
13 words
A tundish according to claim 7 wherein the slabs comprise metal fibre reinforcement.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |