US3344848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Die casting apparatus with non-turbulent fill and dual shot plunger arrangement
Assignee: Motors Liquidation Co
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Filing: 1966-04-25
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Granted: 1967-10-03
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Expires: 1986-04-25
Abstract
No abstract record available.
Inventors
- 👤 Harry D Hall
- 👤 David C Salatin
- 👤 Don R Sutherland
- 👤 Clayton J Trible
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:06
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/2015; B22D17/2069; B22D17/08; B22D17/10; B22D17/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
IN A DIE CASTING APPARATUS THE COMBINATION COMRISING A STATIONARY COVER DIE AND A MOVABLE EJECTOR DIE MOVABLE BETWEEN DIE OPEN AND DIE CLOSED POSITIONS COOPERATIVELY DEFINING A CAVITY THEREBETWEEN, A SHOT SLEEVE HAVING ONE END EXTENDING INTO THE COVER DIE, SAID DIES INCLUDING A SUBSTANTIALLY NONRESTRICTED PASSAGE EXTENDING UPWARDLY FROM SAID END OF SAID SHOT SLEEVE TO SAID CAVITY, SAID SHOT SLEEVE HAVING A MOLTEN METAL CHARGING OPENING EXTERNALLY OF SAID COVER DIE, A FIRST SHOT PLUNGER HAVING A TIP RECIPROCABLE WITHIN SAID SLEEVE BETWEEN A RETRACTED POSITION IN WHICH SAID OPENING IS EXPOSED FOR RECEIVING A CHARGE OF MOLTEN METAL AND AN ADVANCED POSITION NEAR THE SAID ONE END OF SAID SLEEVE, SAID FIRST PLUNGER INCLUDING A SECOND SMALLER PLUNGER RECIPROCABLE WITHIN A LONGITUDINAL BORE IN SAID FIRST PLUNGER SUBSTANTIALLY CENTRALLY THEREOF BETWEEN A RETRACTED POSITION IN WHICH THE TIP FORMS THE
Claim 2
Dependent Claim
144 words
IN A DIE CASTING APPARATUS THE COMBINATION COMRISING A STATIONARY COVER DIE AND A MOVABLE EJECTOR DIE MOVABLE BETWEEN DIE OPEN AND DIE CLOSED POSITIONS COOPERATIVELY DEFINING A CAVITY THEREBETWEEN, A SHOT SLEEVE HAVING ONE END EXTENDING INTO THE COVER DIE, SAID DIES INCLUDING A SUBSTANTIALLY NONRESTRICTED PASSAGE EXTENDING UPWARDLY FROM SAID END OF SAID SHOT SLEEVE TO SAID CAVITY, SAID SHOT SLEEVE HAVING A MOLTEN METAL CHARGING OPENING EXTERNALLY OF SAID COVER DIE, A FIRST SHOT PLUNGER HAVING A TIP RECIPROCABLE WITHIN SAID SLEEVE BETWEEN A RETRACTED POSITION IN WHICH SAID OPENING IS EXPOSED FOR RECEIVING A CHARGE OF MOLTEN METAL AND AN ADVANCED POSITION NEAR THE SAID ONE END OF SAID SLEEVE, SAID FIRST PLUNGER INCLUDING A SECOND SMALLER PLUNGER RECIPROCABLE WITHIN A LONGITUDINAL BORE IN SAID FIRST PLUNGER SUBSTANTIALLY CENTRALLY THEREOF BETWEEN A RETRACTED POSITION IN WHICH THE TIP FORMS THE
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |