Patent US3939900A successfully refreshed from Google Patents.
US3939900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuous casting metal filament on interior of chill roll
Assignee: Honeywell International Inc
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Filing: 1975-01-27
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Granted: 1976-02-24
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Expires: 1995-01-27
Abstract
Abstract A process and apparatus for producing continuous length shaped metal filaments by casting a stream of molten metal within a groove formed in the inner periphery of a cylindrical chill roll. The groove is flanked by a tapered opening of a material which has low thermal conductivity and which is not wetted when contacted by the molten metal. This novel technique increases the tolerance of the position in which the molten stream may be introduced into the groove while ensuring the production of an approximately rounded cross section by preventing the molten stream from spreading out of the groove.
Inventors
- 👤 Donald E. Polk
- 👤 John R. Bedell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:24
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/005; B22D11/06; B22D11/0611; B22D11/062
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
111 words
In an apparatus for the production of continuous length shaped metal filaments from a molten stream wherein the filament is shaped by casting onto the inside surface of a rotating cylindrical chill roll, the improvement wherein said apparatus comprises: a. at least one groove formed in the inner periphery of the roll, said groove being flanked by a smooth tapered surface of a thermal insulating material which has a substantially greater thermal insulating property than the chill roll and which is not wetted by the molten metal said tapered surface directing into the groove the molten metal impinged thereon; and b. means for removing the solidified shaped filaments from the groove.
Claim 2
Dependent Claim
111 words
In an apparatus for the production of continuous length shaped metal filaments from a molten stream wherein the filament is shaped by casting onto the inside surface of a rotating cylindrical chill roll, the improvement wherein said apparatus comprises: a. at least one groove formed in the inner periphery of the roll, said groove being flanked by a smooth tapered surface of a thermal insulating material which has a substantially greater thermal insulating property than the chill roll and which is not wetted by the molten metal said tapered surface directing into the groove the molten metal impinged thereon; and b. means for removing the solidified shaped filaments from the groove.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1 wherein a series of grooves are machined within the chill roll to allow simultaneous production of a plurality of filaments.
Claim 4
Dependent Claim
23 words
The apparatus of claim 1 wherein the means for removing the leading end of the filament is a radially magnetized magnetic pick-up wheel.
Claim 5
Dependent Claim
34 words
The apparatus of claim 1 wherein the thermal insulating material is chosen from the group consisting of aluminum oxide, fired lava, zirconium oxide, vitrous carbon, zirconium titanate, chromium oxide, calcium titanate and calcium zirconate.
Claim 6
Dependent Claim
17 words
The apparatus of claim 1 wherein a guide means is incorporated to direct the filament for recovery.
Claim 7
Dependent Claim
18 words
The apparatus of claim 1 wherein a retaining device is incorporated to ensure complete solidification of the filament.
Claim 8
Dependent Claim
47 words
The apparatus of claim 1 wherein the groove of insulating material has an upper opening greater than 10 × 10 - 3 inch and a lower groove with radius of curvature within the range of 2 × 10 - 3 to 12.5 × 10 - 3 inch.
Claim 9
Dependent Claim
24 words
The apparatus of claim 1 wherein the non-conducting layer is 10 × 10 - 3 to 200 × 10 - 3 inch in thickness.
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) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |