US3133316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding apparatus
Assignee: Pennwalt Corp
•
Filing: 1961-08-07
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Granted: 1964-05-19
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Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Vasken F Arpajian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:51
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A MOLDING APPARATUS COMPRISING A SEPARABLE MOLD HAVING A MOLD CAVITY, A TRANSFER CYLINDER, A VALVE INJECTION NOZZLE BETWEEN AND IN COMMUNICATION WITH SAID MOLD CAVITY AND SAID TRANSFER CYLINDER, MEANS FOR SELECTIVELY ROTATING A SCREW WITHIN SAID CYLINDER, MEANS FOR CAUSING SAID SCREW TO MOVE IN SAID CYLINDER IN A DIRECTION AWAY FROM SAID NOZZLE, MEANS FOR REVERSING THE DIRECTION OF MOVEMENT OF SAID SCREW IN RESPONSE TO SAID MOLD BEING PROPERLY CLOSED AND SAID NOZZLE BEING OPENED, WHEREBY MATERIAL MAY BE INJECTED INTO THE MOLD CAVITY FROM SAID TRANSFER CYLINDER BY SAID SCREW, AND MEANS FOR PREVENTING THE CLOSING OF THE MOLD DURING THE NEXT CYCLE OF OPERATION IN RESPONSE TO MOVEMENT OF SAID SCREW IN A DIRECTION TOWARD SAID NOZZLE BEYOND A PREDETERMINED POINT.
Claim 2
Dependent Claim
127 words
A MOLDING APPARATUS COMPRISING A SEPARABLE MOLD HAVING A MOLD CAVITY, A TRANSFER CYLINDER, A VALVE INJECTION NOZZLE BETWEEN AND IN COMMUNICATION WITH SAID MOLD CAVITY AND SAID TRANSFER CYLINDER, MEANS FOR SELECTIVELY ROTATING A SCREW WITHIN SAID CYLINDER, MEANS FOR CAUSING SAID SCREW TO MOVE IN SAID CYLINDER IN A DIRECTION AWAY FROM SAID NOZZLE, MEANS FOR REVERSING THE DIRECTION OF MOVEMENT OF SAID SCREW IN RESPONSE TO SAID MOLD BEING PROPERLY CLOSED AND SAID NOZZLE BEING OPENED, WHEREBY MATERIAL MAY BE INJECTED INTO THE MOLD CAVITY FROM SAID TRANSFER CYLINDER BY SAID SCREW, AND MEANS FOR PREVENTING THE CLOSING OF THE MOLD DURING THE NEXT CYCLE OF OPERATION IN RESPONSE TO MOVEMENT OF SAID SCREW IN A DIRECTION TOWARD SAID NOZZLE BEYOND A PREDETERMINED POINT.
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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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |