US3204304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die castings and die casting systems
Assignee: WATCHUNG DIE CASTING Corp
•
Filing: 1962-08-10
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Granted: 1965-09-07
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Expires: 1982-08-10
Abstract
No abstract record available.
Inventors
- 👤 Kostenko John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:54
CPC Classifications
B; B22; B22D; B22D17/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988; Y10T29/49989; Y10T428/00; Y10T428/12; Y10T428/12486; Y10T428/12493; Y10T428/12736; Y10T428/1275; Y10T428/12757
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN THE DIE CASTING OF METAL WHEREIN MOLTEN METAL IS INJECTED UNDER PRESSURE THROUGH A SLEEVE INTO THE CAVITY OF A COUPLED DIE, THE STEPS COMPRISING SEPARABLY POSITIONING A BARRIER MEMBER OF HIGHER MELTING POINT THAN SAID MOLTEN METAL IS REGISTRY WITH THE OPEN END OF SAID SLEEVE TO DEFINED THEREWITH A RESTRICTED OUTLET PORT, INJECTING MOLTEN METAL UNDER PRESSURE THROUGH SAID RESTRICTED OUTLET PORT INTO SAID DIE CAVITY LEAVING A RESIDUR IN SAID SLEEVE, COOLING AND SOLIDIFYING SAID METAL AND DISENGAGING THE DIE CAST PIECE AND THE RESIDUE AND THE BARRIER MEMBER AS A UNIT FROM SAID SLEEVE, SAID RESIDUE BEING CONNECTED TO SAID DIE CAST PIECE BY A RELATIVELY NARROW BRIDGE DELINEATED BY SAID OUTLET PORT, AND THEREAFTER SEPARATING SAID RESIDUE FROM SAID DIE CAST PIECE ALONG SAID BRIDGE.
Claim 2
Dependent Claim
131 words
IN THE DIE CASTING OF METAL WHEREIN MOLTEN METAL IS INJECTED UNDER PRESSURE THROUGH A SLEEVE INTO THE CAVITY OF A COUPLED DIE, THE STEPS COMPRISING SEPARABLY POSITIONING A BARRIER MEMBER OF HIGHER MELTING POINT THAN SAID MOLTEN METAL IS REGISTRY WITH THE OPEN END OF SAID SLEEVE TO DEFINED THEREWITH A RESTRICTED OUTLET PORT, INJECTING MOLTEN METAL UNDER PRESSURE THROUGH SAID RESTRICTED OUTLET PORT INTO SAID DIE CAVITY LEAVING A RESIDUR IN SAID SLEEVE, COOLING AND SOLIDIFYING SAID METAL AND DISENGAGING THE DIE CAST PIECE AND THE RESIDUE AND THE BARRIER MEMBER AS A UNIT FROM SAID SLEEVE, SAID RESIDUE BEING CONNECTED TO SAID DIE CAST PIECE BY A RELATIVELY NARROW BRIDGE DELINEATED BY SAID OUTLET PORT, AND THEREAFTER SEPARATING SAID RESIDUE FROM SAID DIE CAST PIECE ALONG SAID BRIDGE.
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |