Patent US2802237A successfully refreshed from Google Patents.
US2802237A
Expired / Lapsed
US
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Formation of elongated thermoplastic shapes in vibratory forming tube
Assignee: Polymer Corp
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Filing: 1954-05-10
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Granted: 1957-08-13
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Expires: 1974-05-10
Abstract
No abstract record available.
Inventors
- 👤 William J Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:40
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/32; B29C48/325; B29C48/03; B29C48/06; B29C48/09; B29C48/14; Y; Y10; Y10S; Y10S264/00; Y10S264/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD FOR CONTINUOUSLY FORMING AN ELONGATED SHAPE FROM HIGH MELTING POLYAMIDE MATERIALS, WHICH METHOD COMPRISES CONTINUOUSLY FEEDING THE POLYAMIDE MATERIAL UNDER PRESSURE INTO ONE END OF AN OPEN-ENDED FORMING TUBE AND ADVANCING THE MATERIAL THROUGH THE TUBE UNDER THE INFLUENCE OF THE FEED PRESSURE, COOLING THE MATERIAL DURING ADVANCEMENT THROUGH THE TUBE TO PROVIDE FOR CONTINUOUS DELIVERY FROM THE TUBE OF A SUBSTANTIALLY SOLIDIFIED SHAPE, AND EFFECTING RELATIVE VIBRATION OF THE TUBE AND THE SOLIDIFYING MATERIAL THEREIN TO PROVIDE AGAINST STICKING OF THE SOLIDIFYING MATERIAL TO THE INTERIOR WALL OF THE TUBE.
Claim 2
Independent Claim
93 words
A METHOD FOR CONTINUOUSLY FORMING AN ELONGATED SHAPE FROM HIGH MELTING POLYAMIDE MATERIALS, WHICH METHOD COMPRISES CONTINUOUSLY FEEDING THE POLYAMIDE MATERIAL UNDER PRESSURE INTO ONE END OF AN OPEN-ENDED FORMING TUBE AND ADVANCING THE MATERIAL THROUGH THE TUBE UNDER THE INFLUENCE OF THE FEED PRESSURE, COOLING THE MATERIAL DURING ADVANCEMENT THROUGH THE TUBE TO PROVIDE FOR CONTINUOUS DELIVERY FROM THE TUBE OF A SUBSTANTIALLY SOLIDIFIED SHAPE, AND EFFECTING RELATIVE VIBRATION OF THE TUBE AND THE SOLIDIFYING MATERIAL THEREIN TO PROVIDE AGAINST STICKING OF THE SOLIDIFYING MATERIAL TO THE INTERIOR WALL OF THE TUBE.
References Cited (Backward Citations)
US1545376A
Cited
US1985899A
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US2118182A
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US2365375A
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US2597553A
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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) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |