Patent US4063944A successfully refreshed from Google Patents.
US4063944A
Expired / Lapsed
US
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Cupola charge material
Assignee: Grede Foundries Inc
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Filing: 1977-03-14
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Granted: 1977-12-20
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Expires: 1997-03-14
Abstract
Abstract A cupola charge material in briquette form composed of 15% to 35% by weight of coke breeze, 0% to 25% of iron oxide, 8% to 20% of cement as a binder, and the balance ferrous metal scrap. The ingredients are mixed with water, poured into a mold of the desired shape and dried to set the cement. The resulting briquette has a density greater than 100 pounds per cubic foot.
Inventors
- 👤 James A. Behring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:33
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/248
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
38 words
A cupola charge material, comprising a bonded block composed of 15% to 35% by weight of coke breeze, 8% to 20% by weight of cement, 0% to 25% of iron oxide, and the balance being ferrous metal scrap.
Claim 2
Dependent Claim
38 words
A cupola charge material, comprising a bonded block composed of 15% to 35% by weight of coke breeze, 8% to 20% by weight of cement, 0% to 25% of iron oxide, and the balance being ferrous metal scrap.
Claim 3
Dependent Claim
14 words
The cupola charge material of claim 1, wherein said ferrous scrap is iron scrap.
Claim 4
Dependent Claim
20 words
The cupola charge material of claim 1, wherein said block has a density greater than 100 pounds per cubic foot.
Claim 5
Dependent Claim
14 words
The cupola charge material of claim 1, wherein the iron oxide is mill scale.
Claim 6
Dependent Claim
26 words
The cupola charge material of claim 1, wherein said ferrous scrap material has a maximum dimension of about 1 inch and is derived from machining operations.
Claim 7
Dependent Claim
75 words
A cupola charge material, comprising a bonded briquette composed of 15% to 25% by weight of coke breeze having a particle size less than 1/4inch, 10% to 15% by weight of cement, 10% to 15% by weight of iron oxide, and the balance being ferrous scrap particles having a maximum dimension of about 1 inch and consisting of the residue from machining operations, said briquette having a density greater than 100 pounds per cubic foot.
Claim 8
Dependent Claim
75 words
A cupola charge material, comprising a bonded briquette composed of 15% to 25% by weight of coke breeze having a particle size less than 1/4inch, 10% to 15% by weight of cement, 10% to 15% by weight of iron oxide, and the balance being ferrous scrap particles having a maximum dimension of about 1 inch and consisting of the residue from machining operations, said briquette having a density greater than 100 pounds per cubic foot.
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) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |