US3114170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion device
Assignee: EIDP Inc
•
Filing: 1961-01-25
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Granted: 1963-12-17
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Expires: 1981-01-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Angus Rucker Blakey
- 👤 Fields Reuben Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:49
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/465; B29C48/03; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
AN APPARATUS FOR THE CONTINUOUS PLASTIFICATION OF THERMOPLASTIC PARTICLES WHICH COMPRISES A MEANS FOR DIRECTING THERMOPLASTIC PARTICLES ONTO A MOVING SURFACE, A MEANS FOR HEATING SAID SURFACE TO A TEMPERATURE OF AT LEAST THE SOFTENING TEMPERATURE OF SAID PARTICLES CAUSING SAID PARTICLES TO ADHERE TO SAID SURFACE AND FORMING A PLASTICATED FILM THEREUPON, A MEANS TO REMOVE SAID FILM FROM SAID SURFACE, A COLLECTING ZONE LOCATED ADJACENT TO SAID REMOVAL MEANS TO RECEIVE SAID THERMOPLASTIC FILM AND RESTRICT THE FLOW THEREOF, THEREBY CAUSING AN INCREASE IN PRESSURE IN SAID PLASTICATED MATERIAL AND AT LEAST ONE PASSAGEWAY CONNECTING THE PORTION OF SAID COLLECTING ZONE WHEREIN THE PRESSURIZED PLASTICATED THERMOPLASTIC RESIDES WITH A DISCHARGE ZONE AT A PRESSURE LESS THAN THAT IN SAID COLLECTING ZONE TO PROVIDE A MEANS FOR CONTROLLED DISCHARGE OF THE PRESSURIZED THERMOPLASTIC FROM SAID COLLECTING ZONE.
Claim 2
Independent Claim
138 words
AN APPARATUS FOR THE CONTINUOUS PLASTIFICATION OF THERMOPLASTIC PARTICLES WHICH COMPRISES A MEANS FOR DIRECTING THERMOPLASTIC PARTICLES ONTO A MOVING SURFACE, A MEANS FOR HEATING SAID SURFACE TO A TEMPERATURE OF AT LEAST THE SOFTENING TEMPERATURE OF SAID PARTICLES CAUSING SAID PARTICLES TO ADHERE TO SAID SURFACE AND FORMING A PLASTICATED FILM THEREUPON, A MEANS TO REMOVE SAID FILM FROM SAID SURFACE, A COLLECTING ZONE LOCATED ADJACENT TO SAID REMOVAL MEANS TO RECEIVE SAID THERMOPLASTIC FILM AND RESTRICT THE FLOW THEREOF, THEREBY CAUSING AN INCREASE IN PRESSURE IN SAID PLASTICATED MATERIAL AND AT LEAST ONE PASSAGEWAY CONNECTING THE PORTION OF SAID COLLECTING ZONE WHEREIN THE PRESSURIZED PLASTICATED THERMOPLASTIC RESIDES WITH A DISCHARGE ZONE AT A PRESSURE LESS THAN THAT IN SAID COLLECTING ZONE TO PROVIDE A MEANS FOR CONTROLLED DISCHARGE OF THE PRESSURIZED THERMOPLASTIC FROM SAID COLLECTING ZONE.
References Cited (Backward Citations)
US2052005A
Cited
US2645813A
Cited
US2718989A
Cited
US2845656A
Cited
US2754543A
Cited
GB859959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |