Patent US2736057A successfully refreshed from Google Patents.
US2736057A
Expired / Lapsed
US
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Equipment for making elongated shapes from polyamides
Assignee: Polymer Corp
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Filing: 1952-05-19
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Granted: 1956-02-28
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Expires: 1972-05-19
Abstract
No abstract record available.
Inventors
- 👤 William J Davis
- 👤 Robert B Koch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:35
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/94; B29C48/022; B29C48/03; B29C48/06; B29C48/09; B29C48/355; B29C48/78; B29C48/80; B29C48/83; B29C48/832; B29C48/834; B29C48/88; B29C48/90; B29C48/901; B29C48/92; B29C2948/00; B29C2948/92; B29C2948/92009; B29C2948/92019; B29C2948/92504; B29C2948/92571; B29C2948/9258; B29C2948/92704; B29C2948/92819; B29C2948/92828; B29C2948/92857; B29C2948/92876; B29C2948/92895; B29C2948/92923; B29K; B29K2077/00; Y; Y10; Y10S; Y10S264/00; Y10S264/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
EQUIPMENT FOR MAKING ELONGATED SHAPES FROM SYNTHETIC LINEAR POLYAMIDES COMPRISING AN OPEN-ENDED FORMING TUBE, A FEEDER FOR DELIVERING MOLTEN POLYAMIDE INTO THE ENTRANCE END OF THE FORMING TUBE TO BE SOLIDIFIED THEREIN AND DISCHARGED IN SOLIDIFIED FORM FROM THE OPPOSITE END OF THE FORMING TUBE, THE TUBE HAVING A LINING OF POLYTETRAFLUORETHYLENE IN THE FORM OF A THIN COATING BONDED TO THE INTERNAL SURFACE OF THE TUBE, AND A TEMPERATURE REGULATION ELEMENT FOR THE TUBE ARRANGED IN HEAT EXCHANGE RELATION TO THE EXTERIOR OF THE FORMING TUBE AND MOUNTED FOR SHIFTING MOVEMENT LENGTHWISE OF THE TUBE.
Claim 2
Dependent Claim
96 words
EQUIPMENT FOR MAKING ELONGATED SHAPES FROM SYNTHETIC LINEAR POLYAMIDES COMPRISING AN OPEN-ENDED FORMING TUBE, A FEEDER FOR DELIVERING MOLTEN POLYAMIDE INTO THE ENTRANCE END OF THE FORMING TUBE TO BE SOLIDIFIED THEREIN AND DISCHARGED IN SOLIDIFIED FORM FROM THE OPPOSITE END OF THE FORMING TUBE, THE TUBE HAVING A LINING OF POLYTETRAFLUORETHYLENE IN THE FORM OF A THIN COATING BONDED TO THE INTERNAL SURFACE OF THE TUBE, AND A TEMPERATURE REGULATION ELEMENT FOR THE TUBE ARRANGED IN HEAT EXCHANGE RELATION TO THE EXTERIOR OF THE FORMING TUBE AND MOUNTED FOR SHIFTING MOVEMENT LENGTHWISE OF THE TUBE.
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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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |