US3356128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting method using latent heat of chill material
Assignee: Milwaukee Chaplet and Mfg Co Inc
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Filing: 1965-10-20
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Granted: 1967-12-05
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Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 Robert H Ahrens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:54
CPC Classifications
B; B22; B22D; B22D15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A METHOD OF CASTING MOLTEN METAL, WHICH METHOD COMPRISES TRANSFER OF HEAT FROM THE MOLTEN METAL TO EFFECT CHANGE OF STATE OF A BODY OF SECONDARY MATERIAL WHICH IS SUBJECT TO CHANGE OF STATE AT A TEMPERATURE LOWER THAN THE CONGEALING TEMPERATURE OF THE MOLTEN METAL BUT SUFFICIENTLY CLOSE TO SUCH TEMPERATURE SO THAT CHANGE OF STATE OCCURS COINCIDENTIALLY WITH THECONGEALING OF THE METAL BEING CAST, AND THEREBY USING LATENT HEAT OF THE SECONDARY MATERIAL TO ABSORB A PART OF THE HEAT OF THE MOLTEN METAL AND TO MAINTAIN APPROXIMATELY CONSTANT TEMPERATURE DIFFERENTIAL BETWEEN THE SECONDARY MATERIAL AND THE METAL BEING CAST THROUGHOUT A SUBSTANTIAL PART OF THE PERIOD REQUIRED FOR THE CONGEALING OF THE LATTER, WHEREBY SUCH CONGEALING PROCEEDS MORE RAPIDLY THAN ELSEWHERE.
Claim 2
Independent Claim
124 words
A METHOD OF CASTING MOLTEN METAL, WHICH METHOD COMPRISES TRANSFER OF HEAT FROM THE MOLTEN METAL TO EFFECT CHANGE OF STATE OF A BODY OF SECONDARY MATERIAL WHICH IS SUBJECT TO CHANGE OF STATE AT A TEMPERATURE LOWER THAN THE CONGEALING TEMPERATURE OF THE MOLTEN METAL BUT SUFFICIENTLY CLOSE TO SUCH TEMPERATURE SO THAT CHANGE OF STATE OCCURS COINCIDENTIALLY WITH THECONGEALING OF THE METAL BEING CAST, AND THEREBY USING LATENT HEAT OF THE SECONDARY MATERIAL TO ABSORB A PART OF THE HEAT OF THE MOLTEN METAL AND TO MAINTAIN APPROXIMATELY CONSTANT TEMPERATURE DIFFERENTIAL BETWEEN THE SECONDARY MATERIAL AND THE METAL BEING CAST THROUGHOUT A SUBSTANTIAL PART OF THE PERIOD REQUIRED FOR THE CONGEALING OF THE LATTER, WHEREBY SUCH CONGEALING PROCEEDS MORE RAPIDLY THAN ELSEWHERE.
References Cited (Backward Citations)
US1630688A
Cited
US1891792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-04 | 1971-06-05 | 1971-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-04 | 1975-06-05 | 1975-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-04 | 1979-06-05 | 1979-12-05 | $7700.00 | Window Closed / Lapsed |