Patent US3233288A successfully refreshed from Google Patents.
US3233288A
Expired / Lapsed
US
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Molding apparatus
Assignee: Pennwalt Corp
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Filing: 1963-03-21
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Granted: 1966-02-08
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Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 Strauss William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:40
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/17; B29C45/46; B29C45/47; B29C45/50; B29C45/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
IN MOLDING APPARATUS COMPRISING AN EXTRUDER CYLINDER, A SCREW ROTATABLY DISPOSED WITHIN SAID CYLINDER, A REVERSIBLE MOTOR MEANS COUPLED TO SAID SCREW, MEANS FOR INTRODUCING A MOLDING COMPOUND INTO SAID CYLINDER FOR DELIVERY OF THE MOLDING COMPOUND BY THE SCREW IN ONE DIRECTION IN SAID CYLINDER, MEANS FOR EXPOSING AT LEAST A PORTION OF THE THREAD ON SAID SCREW AT THE END OF SAID CYLINDER WHICH IS OPPOSITE THE DELIVERY END, WHEREBY SAID
Claim 2
Dependent Claim
73 words
IN MOLDING APPARATUS COMPRISING AN EXTRUDER CYLINDER, A SCREW ROTATABLY DISPOSED WITHIN SAID CYLINDER, A REVERSIBLE MOTOR MEANS COUPLED TO SAID SCREW, MEANS FOR INTRODUCING A MOLDING COMPOUND INTO SAID CYLINDER FOR DELIVERY OF THE MOLDING COMPOUND BY THE SCREW IN ONE DIRECTION IN SAID CYLINDER, MEANS FOR EXPOSING AT LEAST A PORTION OF THE THREAD ON SAID SCREW AT THE END OF SAID CYLINDER WHICH IS OPPOSITE THE DELIVERY END, WHEREBY SAID
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |