US2623809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal casting coating composition for centrifugal molds and method of coating molds
Assignee: Perfect Circle Corp
•
Filing: 1949-05-02
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Granted: 1952-12-30
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Expires: 1969-05-02
Abstract
No abstract record available.
Inventors
- 👤 Robert C Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:37
CPC Classifications
B; B22; B22C; B22C23/00; B22C23/02; B22C3/00; B22D; B22D13/00; B22D13/10; B22D13/101; B22D13/102; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/939; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982; Y10T29/49984; Y10T428/00; Y10T428/12; Y10T428/12292
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN THE METHOD OF MAKING CENTRIFUGAL METAL CASTINGS IN A CYLINDRICAL DIE, THE STEPS OF HEATING THE DIE TO A TEMPERATURE OF ABOUT 700* F. TO ABOUT 1000* F., APPLYING TO THE INTERIOR OF THE DIE DURING ROTATION AN AQUEOUS COMPOSITION OF BENTONITE, SILICA FLOUR AND A WETTING AGENT, AND DRYING THE COMPOSITION DURING ROTATION OF THE DIE TO FORM A STRONG INSULATING COATING ON THE INTERIOR OF THE DIE.
Claim 2
Dependent Claim
54 words
A PERMANENT METAL DIE FOR CENTRIFUGAL CASTING, HAVING AN INSULATING REFRACTORY COATING FORMED ON THE INNER SURFACE THEROF BY APPLYING TO THE DIE WHEN HEATED TO A TEMPERATURE OF ABOUT 700* F. TO ABOUT 1000* F. AND WHILE BEING CENTRIFUGED AN AQUEOUS COMPOSITION OF POWDERED REFRACTORY MATERIAL, A CLAY-TYPED BINDER AND A WETTING AGENT.
References Cited (Backward Citations)
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US2399606A
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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) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |