Patent US3776295A successfully refreshed from Google Patents.
US3776295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuous rotary casting of metal utilizing a liquefied gas to facilitate solidification
Assignee: ETUDES DE CENTRIFUGATION
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Filing: 1971-12-22
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Granted: 1973-12-04
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Expires: 1991-12-22
Abstract
Abstract Rotary method of continuously casting metallic articles in which a liquefied gas is introduced into the top of the mold and apparatus for use in carrying out said method.
Inventors
- 👤 M Mola
- 👤 J Galey
- 👤 P Barthelemy
- 👤 G Bentz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:38
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/10; B22D11/11; B22D11/116; B22D11/117; B22D11/006; B22D11/14; B22D11/144
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
70 words
Method for the continuous rotary casting of metallic articles by introducing a jet of liquid metal into the top of a cooled mold within which the unsolidified metal rotates about a vertical axis while the casting is vertically downwardly extracted, which comprises the step of introducing a liquefied gas which is inert with respect to the metal at the top of the mold adjacent the surface of the liquid metal.
Claim 2
Dependent Claim
70 words
Method for the continuous rotary casting of metallic articles by introducing a jet of liquid metal into the top of a cooled mold within which the unsolidified metal rotates about a vertical axis while the casting is vertically downwardly extracted, which comprises the step of introducing a liquefied gas which is inert with respect to the metal at the top of the mold adjacent the surface of the liquid metal.
Claim 3
Dependent Claim
30 words
Process as claimed in claim 1 in which the casting being manufactured and the liquid metal being solidified are simultaneously rotated about a vertical axis at approximately the same speed.
Claim 4
Dependent Claim
53 words
Process as claimed in claim 1 in which the mold and the solidified portion of the casting are not rotated, but the unsolidified portion of the metal is rotated with respect to the solidified portion thereof by the impact of the jet of liquid metal on the unsolidified upper surface of the casting.
Claim 5
Dependent Claim
46 words
Process as claimed in claim 1 in which the mold and the solidified portion of the casting are not rotated, but the unsolidified portion of the metal is rotated with respect to the solidified portion thereof by a rotating electromagnetic field induced in the unsolidified metal.
Claim 6
Dependent Claim
13 words
Process as claimed in claim 1 in which the liquefied gas is nitrogen.
Claim 7
Dependent Claim
13 words
Process as claimed in claim 1 in which the liquefied gas is argon.
Claim 8
Dependent Claim
43 words
Process as claimed in claim 1 in which the liquefied gas is supplied to the surface of the metal being solidified at a point to which the liquid metal is brought by rotation of the mold after having been deposited in said mold.
Claim 9
Dependent Claim
52 words
Process as claimed in claim 1 in which the liquid metal is supplied at a point eccentric with respect to the axis of the mold and the liquefied gas is also eccentrically supplied downstream of the point of supply of liquid metal with respect to the direction of rotation of the mold.
Claim 10
Dependent Claim
42 words
Process as claimed in claim 1 in which the liquefied gas is supplied to the surface of the bath of metal being solidified at the rate of between 0.08 and 0.5 liters per minute per square decimeter of section of the mold.
Claim 11
Dependent Claim
30 words
Process as claimed in claim 9 in which the liquefied gas is supplied at the rate of about 0.3 liters per minute per square decimeter of section of the mold.
Claim 12
Dependent Claim
26 words
Process as claimed in claim 8 in which the liquefied gas is supplied at a point upstream of a point at which lubricating oil is supplied.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |