US3309436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extrusion method
Assignee: Phillips Petroleum Co
•
Filing: 1965-10-21
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Granted: 1967-03-14
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Expires: 1985-10-21
Abstract
No abstract record available.
Inventors
- 👤 Olaf E Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:39
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/90; B29C48/901; B29C48/03; B29C48/09; B29C48/10; B29C48/36; B29C48/475
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
A METHOD OF PRODUCING AN ARTICLE OF INDEFINITE LENGTH FROM A THERMOPLASTIC MATERIAL COMPRISING THE STEPS OF: INTRODUCING A THERMOPLASTIC MATERIAL IN PARTICULATE FORM INTO A CHAMBER HAVING AN OUTLET IN THE FORM OF A DIE; APPLYING IMPULSE FORCES TO SAID THERMOPLASTIC MATERIAL IN PARTICULATE FORM TO PLASTICIZE A PORTION THEREOF TO FORM A PARTIALLY PLASTICIZED MASS AND TO TRANSMIT FORCES THROUGH SAID PARTIALLY PLASTICIZED MASS DOWNSTREAM IN SAID CHAMBER; MOVING THE PARTIALLY PLASTICIZED MASS THROUGH SAID CHAMBER BY MEANS OF SAID IMPULSE FORCES TO FORM A SUBSTANTIALLY TOTALLY PLASTICIZED MASS OF THERMOPLASTIC MATERIAL, A SUBSTANTIAL PORTION OF THE HEAT REQUIRED TO COMPLETE PLASTIFICATION BEING OBTAINED FROM SAID IMPULSE FORCES; AND FORCING THE SUBSTANTIALLY TOTALLY PLASTICIZED MASS OF THERMOPLASTIC MATERIAL THROUGH SAID CHAMBER AND THE OUTLET THEREOF, WHEREIN THE MASS SOLIDIFIES, IN A CONTINUOUS MANNER BY SAID IMPULSE FORCES APPLIED TO SAID MATERIAL IN PARTICULATE FORM TO PRODUCE SAID ARTICLE OF INDEFINITE LENGTH.
Claim 2
Independent Claim
153 words
A METHOD OF PRODUCING AN ARTICLE OF INDEFINITE LENGTH FROM A THERMOPLASTIC MATERIAL COMPRISING THE STEPS OF: INTRODUCING A THERMOPLASTIC MATERIAL IN PARTICULATE FORM INTO A CHAMBER HAVING AN OUTLET IN THE FORM OF A DIE; APPLYING IMPULSE FORCES TO SAID THERMOPLASTIC MATERIAL IN PARTICULATE FORM TO PLASTICIZE A PORTION THEREOF TO FORM A PARTIALLY PLASTICIZED MASS AND TO TRANSMIT FORCES THROUGH SAID PARTIALLY PLASTICIZED MASS DOWNSTREAM IN SAID CHAMBER; MOVING THE PARTIALLY PLASTICIZED MASS THROUGH SAID CHAMBER BY MEANS OF SAID IMPULSE FORCES TO FORM A SUBSTANTIALLY TOTALLY PLASTICIZED MASS OF THERMOPLASTIC MATERIAL, A SUBSTANTIAL PORTION OF THE HEAT REQUIRED TO COMPLETE PLASTIFICATION BEING OBTAINED FROM SAID IMPULSE FORCES; AND FORCING THE SUBSTANTIALLY TOTALLY PLASTICIZED MASS OF THERMOPLASTIC MATERIAL THROUGH SAID CHAMBER AND THE OUTLET THEREOF, WHEREIN THE MASS SOLIDIFIES, IN A CONTINUOUS MANNER BY SAID IMPULSE FORCES APPLIED TO SAID MATERIAL IN PARTICULATE FORM TO PRODUCE SAID ARTICLE OF INDEFINITE LENGTH.
References Cited (Backward Citations)
US2358963A
Cited
US2888711A
Cited
US2936483A
Cited
US3022814A
Cited
US3068513A
Cited
US3071809A
Cited
US3082476A
Cited
BE620241A
Cited
GB981203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |