US3197827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End core design for use as a closure on centrifugal casting molds
Assignee: Combustion Engineering Inc
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Filing: 1961-12-01
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Granted: 1965-08-03
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Expires: 1981-12-01
Abstract
No abstract record available.
Inventors
- 👤 Paul F Haughton
- 👤 James H Espy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:06
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/10; B22D13/101; B22D13/104
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
APPARATUS TO BE USED FOR CENTRIFUGAL CASTING INCLUDING A SUBSTANTIALLY HORIZONTALLY POSITIONED HOLLOW CYLINDRICAL MOLD, SAID MOLD HAVING A FIRST POURING END AND A SECOND NONPOURING END, MEANS FOR ROTATING THE MOLD, MEANS FOR INTRODUCING A MOLTEN MATERIAL INTO THE MOLD THROUGH THE FIRST END, AN END CORE SECURED TO THE SECOND END, IRREGULARITIES ON THE SURFACE OF THE SECOND END CORE WHICH COMES IN CONTACT WITH THE MOLTEN MATERIAL BEING CAST, SAID IRREGULARITIES BEING POSITIONED SUCH, AND BEING OF SUCH CONFIGURATION THAT THEY ACT AS A PLUMP IMPELLOR WHILE THE MOLD AND END CORE ARE ROTATING TO GIVE THE MOLTEN MATERIAL WHICH TENDS TO RUN DOWN CORE SURFACE FACES ADDITIONAL SPIN.
Claim 2
Dependent Claim
112 words
APPARATUS TO BE USED FOR CENTRIFUGAL CASTING INCLUDING A SUBSTANTIALLY HORIZONTALLY POSITIONED HOLLOW CYLINDRICAL MOLD, SAID MOLD HAVING A FIRST POURING END AND A SECOND NONPOURING END, MEANS FOR ROTATING THE MOLD, MEANS FOR INTRODUCING A MOLTEN MATERIAL INTO THE MOLD THROUGH THE FIRST END, AN END CORE SECURED TO THE SECOND END, IRREGULARITIES ON THE SURFACE OF THE SECOND END CORE WHICH COMES IN CONTACT WITH THE MOLTEN MATERIAL BEING CAST, SAID IRREGULARITIES BEING POSITIONED SUCH, AND BEING OF SUCH CONFIGURATION THAT THEY ACT AS A PLUMP IMPELLOR WHILE THE MOLD AND END CORE ARE ROTATING TO GIVE THE MOLTEN MATERIAL WHICH TENDS TO RUN DOWN CORE SURFACE FACES ADDITIONAL SPIN.
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |