US2746089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for working synthetic organic plastic materials
Assignee: Tube Turns Plastics Inc
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Filing: 1950-12-14
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Granted: 1956-05-22
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Expires: 1970-12-14
Abstract
No abstract record available.
Inventors
- 👤 James W Hendry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:18
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/86; B29C48/865; B29C48/80; B29C48/84; B29C48/85; B29C48/03; B29C48/09; B29C48/36; B29C48/395; B29C48/50; B29C48/505; B29C48/51; B29C48/515; B29C48/793; B29C48/83; B29C48/832
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
THE METHOD OF WORKING, IN A MACHING HAVING A RESTRICTED CHAMBER AND A RAM PASSING THERETHROUGH FOR COMPRESSING AND EJECTING THE MATERIAL THEREIN, A SYNTHETIC, ORGANIC THERMOPLASTIC MATERIAL AT A WORKING TEMPERATURE SLIGHTLY BELOW THE TEMPERATURE AT WHICH SAID MATERIAL WILL DECOMPOSE, THE STEPS THEREIN INCLUDING: PLACING A FLUENT CHARGE OF SAID MATERIAL IN SAID RESTRICTED CHAMBER AT SAID WORKING TEMPERATURE; PLACING A PREDETERMINED QUANTITY OF COLD, DRY, PULVERULENT MATERIAL, CHEMICALLY SIMILAR TO THE MATERIAL CONSTITUTING SAID FLUENT CHARGE, ABOVE THE MATERIAL CONSTITUTING SAID FLUENT CHARGE AND FORMING SAME IN A THIN LAYER ON THE SURFACE OF SAID FLUENT CHARGE AND PERMITTING SAME TO ABSORB HEAT THEREFROM; MAINTAINING SAID RAM AT A TEMPERATURE LESS THAN THAT OF OF SAID FLUENT CHARGE AND PERMITTING IT TO BEAR ON SAID DRY LAYER FOR COMPRESSING AND EJECTING SAID FLUENT CHARGE OF MATERIAL AND ALLOWING A PORTION OF SAID DRY MATERIAL TO BE FORCED BETWEEN SAID RAM AND THE WALLS OF SAID RESTRICTED CHAMBER TO FORM A SEALING RING OF SAID DRY MATERIAL B ETWEEN SAID RAM AND THE WALLS OF RESTRICTED CHAMBER.
Claim 2
Independent Claim
179 words
THE METHOD OF WORKING, IN A MACHING HAVING A RESTRICTED CHAMBER AND A RAM PASSING THERETHROUGH FOR COMPRESSING AND EJECTING THE MATERIAL THEREIN, A SYNTHETIC, ORGANIC THERMOPLASTIC MATERIAL AT A WORKING TEMPERATURE SLIGHTLY BELOW THE TEMPERATURE AT WHICH SAID MATERIAL WILL DECOMPOSE, THE STEPS THEREIN INCLUDING: PLACING A FLUENT CHARGE OF SAID MATERIAL IN SAID RESTRICTED CHAMBER AT SAID WORKING TEMPERATURE; PLACING A PREDETERMINED QUANTITY OF COLD, DRY, PULVERULENT MATERIAL, CHEMICALLY SIMILAR TO THE MATERIAL CONSTITUTING SAID FLUENT CHARGE, ABOVE THE MATERIAL CONSTITUTING SAID FLUENT CHARGE AND FORMING SAME IN A THIN LAYER ON THE SURFACE OF SAID FLUENT CHARGE AND PERMITTING SAME TO ABSORB HEAT THEREFROM; MAINTAINING SAID RAM AT A TEMPERATURE LESS THAN THAT OF OF SAID FLUENT CHARGE AND PERMITTING IT TO BEAR ON SAID DRY LAYER FOR COMPRESSING AND EJECTING SAID FLUENT CHARGE OF MATERIAL AND ALLOWING A PORTION OF SAID DRY MATERIAL TO BE FORCED BETWEEN SAID RAM AND THE WALLS OF SAID RESTRICTED CHAMBER TO FORM A SEALING RING OF SAID DRY MATERIAL B ETWEEN SAID RAM AND THE WALLS OF RESTRICTED CHAMBER.
References Cited (Backward Citations)
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Cited
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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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |