US3278992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molding apparatus
Assignee: Pennwalt Corp
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Filing: 1965-12-07
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Granted: 1966-10-18
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Expires: 1985-12-07
Abstract
No abstract record available.
Inventors
- 👤 Strauss William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/03; Y; Y10; Y10S; Y10S425/00; Y10S425/045
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A MOLDING APPARATUS COMPRISING A SEPARABLE MOLD HAVING A MOLD CAVITY, A TRANSFER POT HAVING ONE END ADJACENT SAID MOLD CAVITY, A TRANSFER DELIVERY MEANS RECIPROCABLY MOUNTED WITHIN SAID POT TO DELIVER MATERIAL IN SAID POT TO SAID MOLD CAVITY, AN EXTRUDER CYLINDER SELECTIVELY COMMUNICATING WITH SAID POT, MEANS FOR MOVING THE EXTRUDER CYLINDER WITH RESPECT TO SAID POT WHEN AN ERROR OCCURS IN THE MOLDING OPERATION THEREBY INTERRUPTING COMMUNICATION BETWEEN SAID CYLINDER AND SAID POT, MEANS FOR PURGING MATERIAL WITHIN THE EXTRUDER CYLINDER AFTER AN ERROR HAS OCCURRED, AND MEANS FOR PLASTICIZING MATERIAL WITHIN SAID EXTRUDER CYLINDER AND FEEDING THE PLASTICIZED MATERIAL TO SAID TRANSFER POT IN TIMED RELATION WITH THE RECIPROCATION OF SAID DELIVERY MEANS.
Claim 2
Dependent Claim
117 words
A MOLDING APPARATUS COMPRISING A SEPARABLE MOLD HAVING A MOLD CAVITY, A TRANSFER POT HAVING ONE END ADJACENT SAID MOLD CAVITY, A TRANSFER DELIVERY MEANS RECIPROCABLY MOUNTED WITHIN SAID POT TO DELIVER MATERIAL IN SAID POT TO SAID MOLD CAVITY, AN EXTRUDER CYLINDER SELECTIVELY COMMUNICATING WITH SAID POT, MEANS FOR MOVING THE EXTRUDER CYLINDER WITH RESPECT TO SAID POT WHEN AN ERROR OCCURS IN THE MOLDING OPERATION THEREBY INTERRUPTING COMMUNICATION BETWEEN SAID CYLINDER AND SAID POT, MEANS FOR PURGING MATERIAL WITHIN THE EXTRUDER CYLINDER AFTER AN ERROR HAS OCCURRED, AND MEANS FOR PLASTICIZING MATERIAL WITHIN SAID EXTRUDER CYLINDER AND FEEDING THE PLASTICIZED MATERIAL TO SAID TRANSFER POT IN TIMED RELATION WITH THE RECIPROCATION OF SAID DELIVERY MEANS.
References Cited (Backward Citations)
US2346228A
Cited
US2890491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |