Patent US3284979A successfully refreshed from Google Patents.
US3284979A
Expired / Lapsed
US
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Refractory shape with embedded channel shape reinforcement
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1963-11-06
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Granted: 1966-11-15
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Expires: 1983-11-06
Abstract
No abstract record available.
Inventors
- 👤 Robert A Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:31
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/04; F27D1/06; F27D1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A NONACID REFRACTORY SHAPE HAVING A FLAT SURFACE AND A METAL REINFORCEMENT COMPRISING: (A) A GENERALLY U-SHAPED CHANNEL HAVING (B) A FLAT WEB AND (C) TWO SIDE FLANGES, AND (D) A PLURALITY OF ARMS EXTENDING OUTWARDLY FROM SAID WEB AND STRUCK FROM SAID FLANGES, EACH OF SAID ARMS HAVING (E) A FLAT BASE LYING IN THE PLANE OF THE WEB, AND (F) A SHOULDER DISPOSED IN THE SAME DIRECTION AS THE FLANGES, THE PANEL OF THE WEB OF THE METAL REINFORCEMENT LYING IN THE PLANE OF THE FLAT SURFACE OF THE REFRACTORY SHAPE, AND THE FLANGES OF THE U-SHAPED CHANNEL AND THE SHOULDERS OF THE ARMS BEING EMBEDDED IN THE REFRACTORY SHAPE.
Claim 2
Dependent Claim
112 words
A NONACID REFRACTORY SHAPE HAVING A FLAT SURFACE AND A METAL REINFORCEMENT COMPRISING: (A) A GENERALLY U-SHAPED CHANNEL HAVING (B) A FLAT WEB AND (C) TWO SIDE FLANGES, AND (D) A PLURALITY OF ARMS EXTENDING OUTWARDLY FROM SAID WEB AND STRUCK FROM SAID FLANGES, EACH OF SAID ARMS HAVING (E) A FLAT BASE LYING IN THE PLANE OF THE WEB, AND (F) A SHOULDER DISPOSED IN THE SAME DIRECTION AS THE FLANGES, THE PANEL OF THE WEB OF THE METAL REINFORCEMENT LYING IN THE PLANE OF THE FLAT SURFACE OF THE REFRACTORY SHAPE, AND THE FLANGES OF THE U-SHAPED CHANNEL AND THE SHOULDERS OF THE ARMS BEING EMBEDDED IN THE REFRACTORY SHAPE.
References Cited (Backward Citations)
US1130722A
Cited
US1327741A
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US1446916A
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US1867329A
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US3089284A
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US3012525A
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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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |