US3085302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum die casting method and apparatus
Assignee: Individual
•
Filing: 1956-01-19
•
Granted: 1963-04-16
•
Expires: 1976-01-19
Abstract
No abstract record available.
Inventors
- 👤 Alfred P Federman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:32
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/14; B29; B29C; B29C45/00; B29C45/17; B29C45/26; B29C45/34; Y; Y10; Y10S; Y10S164/00; Y10S164/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
IN AN INJECTION DIE-CASTING APPARATUS, THE COMBINATION OF SEPARABLE DIES DEFINING A DIE CAVITY, A CHARGING CHAMBER FOR MOLTEN METAL, A FLOW PASSAGEWAY LEADING FROM SAID CHARGING CHAMBER TO SAID DIE CAVITY, A MOVABLE INJECTION ELEMENT OPERATIVELY ASSOCIATED WITH SAID CHAMBER FOR DISPLACING SAID MOLTEN METAL TOWARD SAID DIE CAVITY, FIRST MEANS FOR ACTUATING SAID ELEMENT TO SUBSTANTIALLY FILL SAID PASSAGEWAY WITH A PREDETERMINED VOLUME OF SAID METAL, MEANS FOR VENTING SAID PASSAGEWAY TO ATMOSPHERE, SEALING MEANS RESPONSIVE TO THE FILLING OF SAID PASSAGEWAY FOR CLOSING SAID VENT MEANS, AND SECOND MEANS, RESPONSIVE TO CLOSING OF SAID VENT MEANS, FOR ACTUATING SAID ELEMENT TO INJECT SAID METAL INTO SAID DIE CAVITY.
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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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |