US3094753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a composite metal structure
Assignee: Ampco Metal Inc
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Filing: 1960-02-04
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Granted: 1963-06-25
•
Expires: 1980-02-04
Abstract
No abstract record available.
Inventors
- 👤 John F Klement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:05
CPC Classifications
B; B22; B22D; B22D13/00; B22D19/00; B22D19/0036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A METHOD OF CENTRIFUGALLY CASTING AN OUTER BRONZE MEMBER ON A CENTRAL CORE, COMPRISING THE STEPS OF DISPOSING THE CORE HAVING AN OUTER SURFACE TO RECEIVE THE MEMBER WITHIN A MOLD, HEATING THE MOLD TO A TEMPERATURE IN THE RANGE OF 100* TO 1000*F., ROTATING THE MOLD ABOUT THE AXIS OF THE CORE AT A SPEED OF 5 TO 500 R.P.M., POURING THE MOLTEN BRONZE AT A TEMPERATURE IN THE RANGE OF 1800* F. TO 2400*F. INTO THE ROTATING MOLD AND INTO CONTACT WITH SAID SURFACE TO FORM THE MEMBER AND CONTINUING THE POURING OF SAID BRONZE AROUND THE ENTIRE CIRCUMFERENCE OF THE CORE ABOVE THE UPPER EXTREMITY OF SAID SURFACE TO FORM AN ANNULAR RISER, TERMINATING THE POURING WHEN SAID RISER HAS A WEIGHT IN THE RANGE OF 0.2 TO 0.9 TIMES THE WEIGHT OF THE MEMBER, AND SOLIDIFYING THE MOLTEN BRONZE TO FORM AN OUTER MEMBER INTEGRAL WITH THE CORE WITH SAID OUTER BRONZE MEMBER HAVING A FINE GRAIN STRUCTURE AND HAVING MICRO-CONSTITUENTS OF FINE SIZE.
Claim 2
Independent Claim
168 words
A METHOD OF CENTRIFUGALLY CASTING AN OUTER BRONZE MEMBER ON A CENTRAL CORE, COMPRISING THE STEPS OF DISPOSING THE CORE HAVING AN OUTER SURFACE TO RECEIVE THE MEMBER WITHIN A MOLD, HEATING THE MOLD TO A TEMPERATURE IN THE RANGE OF 100* TO 1000*F., ROTATING THE MOLD ABOUT THE AXIS OF THE CORE AT A SPEED OF 5 TO 500 R.P.M., POURING THE MOLTEN BRONZE AT A TEMPERATURE IN THE RANGE OF 1800* F. TO 2400*F. INTO THE ROTATING MOLD AND INTO CONTACT WITH SAID SURFACE TO FORM THE MEMBER AND CONTINUING THE POURING OF SAID BRONZE AROUND THE ENTIRE CIRCUMFERENCE OF THE CORE ABOVE THE UPPER EXTREMITY OF SAID SURFACE TO FORM AN ANNULAR RISER, TERMINATING THE POURING WHEN SAID RISER HAS A WEIGHT IN THE RANGE OF 0.2 TO 0.9 TIMES THE WEIGHT OF THE MEMBER, AND SOLIDIFYING THE MOLTEN BRONZE TO FORM AN OUTER MEMBER INTEGRAL WITH THE CORE WITH SAID OUTER BRONZE MEMBER HAVING A FINE GRAIN STRUCTURE AND HAVING MICRO-CONSTITUENTS OF FINE SIZE.
References Cited (Backward Citations)
GB189521213A
Cited
GB260390A
Cited
US2117106A
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US2231427A
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US2283152A
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US2420003A
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US2623254A
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US2946104A
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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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |