US2993260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Differentially heated draw pin
Assignee: Akzona Inc
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Filing: 1958-02-20
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Granted: 1961-07-25
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Expires: 1978-02-20
Abstract
No abstract record available.
Inventors
- 👤 Boerma Jan Albert Kornelus
- 👤 Heijnis James Watt Ijsbrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:48
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
APPARATUS FOR PRODUCING DRAWN THREAD FORMED FROM SYNTHETIC LINEAR POLYCONDENSATION PRODUCTS COMPRISING A NON-ROTATABLY MOUNTED DRAWING PIN HAVING CIRCUMFERENTIALLY SPACED THREAD RECEIVING AND THREAD DISCHARGING SECTIONS, MEANS FOR SUPPLYING THREAD AT A SUBSTANTIALLY CONSTANT RATE OF SPEED TO SAID PIN, MEANS FOR WITHDRAWING SAID THREAD FROM SAID PIN AT A HIGHER RATE OF SPEED, AND MEANS FOR MAINTAINING A HIGHER TEMPERATURE IN SAID THREAD DISCHARGING SECTION THAN IN SAID THREAD RECEIVING SECTION.
Claim 2
Dependent Claim
72 words
APPARATUS FOR PRODUCING DRAWN THREAD FORMED FROM SYNTHETIC LINEAR POLYCONDENSATION PRODUCTS COMPRISING A NON-ROTATABLY MOUNTED DRAWING PIN HAVING CIRCUMFERENTIALLY SPACED THREAD RECEIVING AND THREAD DISCHARGING SECTIONS, MEANS FOR SUPPLYING THREAD AT A SUBSTANTIALLY CONSTANT RATE OF SPEED TO SAID PIN, MEANS FOR WITHDRAWING SAID THREAD FROM SAID PIN AT A HIGHER RATE OF SPEED, AND MEANS FOR MAINTAINING A HIGHER TEMPERATURE IN SAID THREAD DISCHARGING SECTION THAN IN SAID THREAD RECEIVING SECTION.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |