US4044817A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous casting method using graphite mold impregnated with unsaturated drying oil
Assignee: Chase Brass and Copper Co Inc
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Filing: 1975-03-25
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Granted: 1977-08-30
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Expires: 1995-03-25
Abstract
Abstract An improved graphite mold for and process of continuously casting metal wherein the interstitial space in the mold is impregnated with an unsaturated oil, or mixture of unsaturated oils, having a drying capability equivalent to at least soybean oil. Heat is applied to dry the oil, and subsequently metal is cast in the mold thereby carbonizing the oil or mixtures thereof in the interstitial space.
Inventors
- 👤 William J. Varga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:52
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/006; B22D11/07
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
79 words
In a method of continuously casting of a metal using a graphite mold or die having interstitial space, the improvement comprising, impregnating the interstitial space in said graphite mold or die with an unsaturated oil or a mixture of unsaturated oils, wherein the unsaturated oil or mixtures thereof have a drying capability equivalent to at least soybean oil, applying heat to dry the same, and casting said metal thereby carbonizing said oil or mixtures thereof in said interstitial space.
Claim 2
Dependent Claim
79 words
In a method of continuously casting of a metal using a graphite mold or die having interstitial space, the improvement comprising, impregnating the interstitial space in said graphite mold or die with an unsaturated oil or a mixture of unsaturated oils, wherein the unsaturated oil or mixtures thereof have a drying capability equivalent to at least soybean oil, applying heat to dry the same, and casting said metal thereby carbonizing said oil or mixtures thereof in said interstitial space.
Claim 3
Dependent Claim
14 words
The method as defined in claim 1 wherein the unsaturated oil is linseed oil.
Claim 4
Dependent Claim
14 words
The method as defined in claim 1 wherein the unsaturated oil is safflower oil.
Claim 5
Dependent Claim
14 words
The method as defined in claim 1 wherein the unsaturated oil is tung oil.
Claim 6
Dependent Claim
16 words
The method as defined in claim 1 wherein the unsaturated oil is a dehydrated castor oil.
Claim 7
Dependent Claim
70 words
In a process of continuously casting a nonferrous metal when using a graphite mold or die, the improvement comprising: impregnating the graphite mold or die with an unsaturated oil having a drying capability equivalent to at least soybean oil in the amount from 0.5 to 10% by weight, drying the oil, and exposing the mold or die to a hot metal when casting the metal whereby said oil is carbonized.
Claim 8
Dependent Claim
70 words
In a process of continuously casting a nonferrous metal when using a graphite mold or die, the improvement comprising: impregnating the graphite mold or die with an unsaturated oil having a drying capability equivalent to at least soybean oil in the amount from 0.5 to 10% by weight, drying the oil, and exposing the mold or die to a hot metal when casting the metal whereby said oil is carbonized.
Claim 9
Dependent Claim
18 words
In the process as defined in claim 6, wherein the metal being cast is copper or copper alloy.
Claim 10
Dependent Claim
15 words
In the process as defined in claim 6, wherein the metal being cast is bronze.
Claim 11
Dependent Claim
15 words
In the process as defined in claim 6, wherein the metal cast is 70/30 brass.
Claim 12
Dependent Claim
20 words
The process as defined in claim 6, wherein the unsaturated oil is dried at a temperature up to 100° C.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |