Patent US3189950A successfully refreshed from Google Patents.
US3603050A
Expired / Lapsed
US
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Ladle lining
Assignee: Individual
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Filing: 1969-08-22
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Granted: 1971-09-07
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Expires: 1989-08-22
Abstract
Abstract A ladle having a curved conical sidewall provided with a lining comprising stacked courses of refractory blocks disposed with horizontal top and bottom faces and provided with parallel front and back faces inclined at substantially the same angle as the ladle sidewall to provide a lining face which is smooth and continuous.
Inventors
- 👤 Myron Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:21
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
209 words
A ladle comprising a conically curved side shell inclined upwardly and outwardly from a horizontal base lining, said side shell substantially circular in plan and inclined from the vertical at a substantially fixed angle between approximately 4*10* , said shell having a diameter of less than approximately 90 inches, a working side lining disposed adjacent substantially the entirety of the interior surface of said shell, said side lining including a plurality of vertically stacked courses of refractory blocks, each said course in turn including a plurality of laterally adjacent refractory blocks, said blocks of vertically adjacent courses of congruent configuration, each said block having a planar and congruent top and bottom walls parallel to one another, parallel front and back faces on each said block both angularly disposed with respect to said block top and bottom walls, each said block having a pair of end walls disposed in vertical planes, and said block top and bottom walls are parallel to the horizontal plane of said base lining while said angularly disposed front and back faces are vertically inclined an amount substantially corresponding to said inclination of said shell side from the horizontal, whereby the lateral edges of said front faces of adjacent blocks are contiguous throughout said side lining.
Claim 2
Dependent Claim
209 words
A ladle comprising a conically curved side shell inclined upwardly and outwardly from a horizontal base lining, said side shell substantially circular in plan and inclined from the vertical at a substantially fixed angle between approximately 4*10* , said shell having a diameter of less than approximately 90 inches, a working side lining disposed adjacent substantially the entirety of the interior surface of said shell, said side lining including a plurality of vertically stacked courses of refractory blocks, each said course in turn including a plurality of laterally adjacent refractory blocks, said blocks of vertically adjacent courses of congruent configuration, each said block having a planar and congruent top and bottom walls parallel to one another, parallel front and back faces on each said block both angularly disposed with respect to said block top and bottom walls, each said block having a pair of end walls disposed in vertical planes, and said block top and bottom walls are parallel to the horizontal plane of said base lining while said angularly disposed front and back faces are vertically inclined an amount substantially corresponding to said inclination of said shell side from the horizontal, whereby the lateral edges of said front faces of adjacent blocks are contiguous throughout said side lining.
Claim 3
Dependent Claim
13 words
A ladle according to claim 1, wherein said blocks are arcuate in plan.
Claim 4
Dependent Claim
13 words
A ladle according to claim 1, wherein said blocks are trapezoidal in plan.
Claim 5
Dependent Claim
23 words
A ladle according to claim 1, wherein said blocks are provided with an interlocking tongue and groove structure on the juxtaposed ends thereof.
Claim 6
Dependent Claim
23 words
A ladle according to claim 1, wherein a refractory safety lining is disposed between the back face of said lining and said shell.
References Cited (Backward Citations)
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Cited
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Cited
US1944278A
Cited
US2305112A
Cited
US3294386A
Cited
US3421749A
Cited
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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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |