Patent US3280425A successfully refreshed from Google Patents.
US3280425A
Expired / Lapsed
US
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Apparatus for plastifying and extruding thermoplastic material
Assignee: Individual
•
Filing: 1964-04-15
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Granted: 1966-10-25
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Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Beck Erich
- 👤 Bosch Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:44
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; D01D1/09; B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/375; B29C48/387; B29C48/395; B29C48/45; B29C48/50; B29C48/501; B29C48/505; B29C48/63; D01D1/04; B29C48/03; B29C48/365
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
IN AN APPARATUS FOR PLASTIFYING AND EXTRUDING THERMOPLASTIC MATERIAL, THE COMBINATION: A HOUSING HAVING A LONGITUDINAL BORE COMPRISING A CYLINDRIC PORTION, A POSITIVE DISPLACEMENT PUMP CONNECTED TO SAID HOUSING AND HAVING AN INLET COMMUNICATING WITH ONE END OF SAID HOUSING BORE, A KNEADING SPINDLE MOUNTED FOR ROTATION IN SAID HOUSING BORE AND AXIALLY DISPLACEABLE THEREIN
Claim 2
Dependent Claim
55 words
IN AN APPARATUS FOR PLASTIFYING AND EXTRUDING THERMOPLASTIC MATERIAL, THE COMBINATION: A HOUSING HAVING A LONGITUDINAL BORE COMPRISING A CYLINDRIC PORTION, A POSITIVE DISPLACEMENT PUMP CONNECTED TO SAID HOUSING AND HAVING AN INLET COMMUNICATING WITH ONE END OF SAID HOUSING BORE, A KNEADING SPINDLE MOUNTED FOR ROTATION IN SAID HOUSING BORE AND AXIALLY DISPLACEABLE THEREIN
References Cited (Backward Citations)
US2791802A
Cited
US3110930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |