Patent US4309483A successfully refreshed from Google Patents.
US3583469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously casting solid state cylinders
Assignee: CENTRIFUGATION SOC CIV SOC CIV
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Filing: 1968-02-14
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Granted: 1971-06-08
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Expires: 1988-02-14
Abstract
Abstract Solid round castings suitable for direct drawing into tubes are continuously cast by pouring metal molten metal into a rotating bottomless mold at a point eccentric to the axis of the mold, and continuously withdrawing the casting from the bottom of the mold. The mold should be rotated at a number of rotations per minute equal to 6,000-18,000 divided by the diameter of the mold in millimeters. Improved results are obtained by vertically reciprocating the mold as it rotates.
Inventors
- 👤 Pierre Peytavin
- 👤 Louis Babel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:43
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/14; B22D11/144; B22D11/04; B22D11/053
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
74 words
A process for continuously molding a solid metal casting comprising the steps of rotating a bottomless cylindrical mold about its main axis at a speed between 50 and 200 r.p.m. while maintaining said mold in a vertical position, cooling said rotating mold, and introducing a jet of molten metal into said cooled rotating mold at a point eccentric to the axis thereof, while continuously withdrawing said casting from the lower end of said mold.
Claim 2
Dependent Claim
74 words
A process for continuously molding a solid metal casting comprising the steps of rotating a bottomless cylindrical mold about its main axis at a speed between 50 and 200 r.p.m. while maintaining said mold in a vertical position, cooling said rotating mold, and introducing a jet of molten metal into said cooled rotating mold at a point eccentric to the axis thereof, while continuously withdrawing said casting from the lower end of said mold.
Claim 3
Dependent Claim
35 words
Process according to claim 1 wherein the point of introduction of said jet into said rotating mold is located within the outer third of the radius of said casting but spaced inwardly from said mold.
Claim 4
Dependent Claim
39 words
Process according to claim 1 wherein said jet of molten metal has a component of horizontal speed perpendicular to the radius of the mold passing through the point of impact of said jet of molten metal on said casting.
Claim 5
Dependent Claim
37 words
Process according to claim 1 wherein said jet of molten metal has a component of horizontal speed different from the speed of rotation of said casting at the point of impact of said jet with said casting.
Claim 6
Dependent Claim
19 words
Process according to claim 1 wherein said mold is rotated at a speed ranging from 70 to 100 r.p.m.
Claim 7
Dependent Claim
23 words
Process according to claim 1 wherein said casting upon withdrawal is subjected to a cooling water spray after passing the point of exit.
Claim 8
Dependent Claim
34 words
Process according to claim 1 wherein said casting upon withdrawal is subjected to a cooling water spray after passing the point of exit, said spray being directed from spray means rotating about said casting.
Claim 9
Dependent Claim
96 words
A process for continuously molding a solid metal casting comprising the steps of rotating a bottomless cylindrical mold about its main axis at a number of revolutions per minute equal to from 6,000 to 18,000 divided by the number of millimeters in the mold diameter while maintaining said mold in a vertical position, cooling said rotating mold, and introducing a jet of molten metal from which said casting is to be formed into said rotating mold at a point eccentric to the axis thereof while continuously withdrawing said casting from the lower end of said mold.
Claim 10
Dependent Claim
96 words
A process for continuously molding a solid metal casting comprising the steps of rotating a bottomless cylindrical mold about its main axis at a number of revolutions per minute equal to from 6,000 to 18,000 divided by the number of millimeters in the mold diameter while maintaining said mold in a vertical position, cooling said rotating mold, and introducing a jet of molten metal from which said casting is to be formed into said rotating mold at a point eccentric to the axis thereof while continuously withdrawing said casting from the lower end of said mold.
Claim 11
Dependent Claim
16 words
The method claimed in claim 8 in which said mold is vertically reciprocated while being rotated.
Claim 12
Dependent Claim
23 words
The method claimed in claim 9 in which said mold, during reciprocation is moved downwardly more rapidly than said casting is withdrawn therefrom.
Claim 13
Dependent Claim
28 words
The method of manufacturing an article of manufacture which comprises the steps of producing a casting by the method claimed in claim 8, and hot drawing said casting.
Claim 14
Dependent Claim
17 words
The method claimed in claim 11 in which glass is used as a lubricant during said drawing.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |