US3262257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polypropylene bulked yarn
Assignee: EIDP Inc
•
Filing: 1965-05-07
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Granted: 1966-07-26
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Expires: 1985-05-07
Abstract
No abstract record available.
Inventors
- 👤 Martin Bruce Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:41
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/16; D02G1/164; D01; D01D; D01D5/00; D01D5/22; D01D5/23; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2922
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
AN IMPROVED BULKED YARN OF CRYSTALLINE POLYPROPYLENE FILAMENTS HAVING AN EXCEPTIONAL DEGREE OF COMPRESSIONAL RESILIENCE, CRIMP AND COVERING POWER, THE FILAMENTS BEING CHARACTERIZED BY (A) GAMMA ORIENTATION, (B) AN ORIENTATION ANGLE OF 10 TO 60*, (C) ALTERNATE "S" AND "Z" TWIST SECTIONS THROUGHOUT THE LENGTH, (D) A RANDOM NUMBER OF TURNS BETWEEN TWIST REVERSALS, (E9 A RANDOM CONTINUOUSLY VARYING ANGLE OF TWIST ALONG THE FILAMENTS, (F) A RANDOM NUMBER OF TWIST REVERSALS PER INCH, (G) AT LEAST ONE "Z" TURN AND AT LEAST ONE "S" TURN PER INCH WITH EACH TURN HAVING A TWIST ANGLE AVERAGING AT LEAST 5*, (H) AND A RANDOM, PERSISTENT THREE-DIMENSIONAL, NONHELICAL, CURVILINEAR CRIMPED CONFIGURATION CONTINUOUSLY ALONG THE LENGTH, SAID FILAMENTS BEING SUBSTANTIALLY FREE FROM STABLE CRUNODAL LOOPS.
Claim 2
Dependent Claim
122 words
AN IMPROVED BULKED YARN OF CRYSTALLINE POLYPROPYLENE FILAMENTS HAVING AN EXCEPTIONAL DEGREE OF COMPRESSIONAL RESILIENCE, CRIMP AND COVERING POWER, THE FILAMENTS BEING CHARACTERIZED BY (A) GAMMA ORIENTATION, (B) AN ORIENTATION ANGLE OF 10 TO 60*, (C) ALTERNATE "S" AND "Z" TWIST SECTIONS THROUGHOUT THE LENGTH, (D) A RANDOM NUMBER OF TURNS BETWEEN TWIST REVERSALS, (E9 A RANDOM CONTINUOUSLY VARYING ANGLE OF TWIST ALONG THE FILAMENTS, (F) A RANDOM NUMBER OF TWIST REVERSALS PER INCH, (G) AT LEAST ONE "Z" TURN AND AT LEAST ONE "S" TURN PER INCH WITH EACH TURN HAVING A TWIST ANGLE AVERAGING AT LEAST 5*, (H) AND A RANDOM, PERSISTENT THREE-DIMENSIONAL, NONHELICAL, CURVILINEAR CRIMPED CONFIGURATION CONTINUOUSLY ALONG THE LENGTH, SAID FILAMENTS BEING SUBSTANTIALLY FREE FROM STABLE CRUNODAL LOOPS.
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) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |