Patent US3563300A successfully refreshed from Google Patents.
US3563300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal casting of a composite roller
Assignee: Kubota Iron and Machinery Works Ltd
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Filing: 1968-04-22
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Granted: 1971-02-16
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Expires: 1988-04-22
Abstract
Abstract A highly viscous flux at high temperature added to a mass of outer layer-forming metal during centrifugal casting to produce and maintain a flux coat of the outer layer subsequent to its solidification and prior to adding the molten mass of inner layer-forming metal with the mold at rest.
Inventors
- 👤 Juntaro Honda
- 👤 Masahiro Fukuda
- 👤 Toru Endo
- 👤 Yoshihiro Nakagawa
- 👤 Tamotsu Hashizume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:59
CPC Classifications
B; B22; B22D; B22D13/00; B22D19/00; B22D19/16; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12639; Y10T428/12646; Y10T428/12653
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
37 words
The process as claimed in claim 1 wherein said flux is added to said mold by sprinkling the same on the inner surface of the outer metal layer subsequent to centrifugal casting and solidification of the same.
Claim 2
Dependent Claim
34 words
The process as claimed in claim 1 wherein said flux is added simultaneously to said mold as a separate mass during the supplying to said mold of said molten mass of outer layer-forming metal.
Claim 3
Dependent Claim
27 words
The process as claimed in claim 1 wherein said flux composition is supplied to said mold as a mixture with the molten mass of outer layer-forming metal.
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |