US3358433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collection of synthetic polymeric yarns or filaments
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1966-09-26
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Granted: 1967-12-19
•
Expires: 1986-09-26
Abstract
No abstract record available.
Inventors
- 👤 Harold E Curtis
- 👤 Johnson Bryan Kingsley
- 👤 John P Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:51
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/14; D01H1/20; D01H1/28; D01H1/30; D01H1/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A METHOD OF WINDING A YARN PACKAGE ON OVER-END WINDING APPARATUS IN A MANNER TO MINIMIZE SLOW-DOWN BREAKAGES AND LOOPS, COMPRISING THE STEPS OF: (A) POSITIVELY FORWARDING YARN BY DRAW ROLLS TO A ROTATING SPINDLE FOR WINDING THEREON IN THE FORM OF A YARN PACKAGE, (B) STOPPING SAID DRAW ROLLS INDEPENDENTLY OF SAID SPINDLE WHEN A FULL YARN PACKAGE HAS BEEN WOUND, (E) PROGRAMMING THE SLOW-DOWN PERIOD OF THE FULL PACKAGE WINDING CYCLE IN SUCH MANNER THAT THE SPINDLE SPEED IS POSITIVELY CONTROLLED IN A PREDETERMINED RELATIONSHIP TO THE DRAW ROLLS SPEED DURING THE FIRST PART OF SAID PERIOD UNTIL THE DRAW ROLLS BECOME STATIONARY, AND (D) BRINGING SAID SPINDLE TO REST AFTER THE DRAW ROLLS HAVE BECOME STATIONARY.
Claim 2
Independent Claim
119 words
A METHOD OF WINDING A YARN PACKAGE ON OVER-END WINDING APPARATUS IN A MANNER TO MINIMIZE SLOW-DOWN BREAKAGES AND LOOPS, COMPRISING THE STEPS OF: (A) POSITIVELY FORWARDING YARN BY DRAW ROLLS TO A ROTATING SPINDLE FOR WINDING THEREON IN THE FORM OF A YARN PACKAGE, (B) STOPPING SAID DRAW ROLLS INDEPENDENTLY OF SAID SPINDLE WHEN A FULL YARN PACKAGE HAS BEEN WOUND, (E) PROGRAMMING THE SLOW-DOWN PERIOD OF THE FULL PACKAGE WINDING CYCLE IN SUCH MANNER THAT THE SPINDLE SPEED IS POSITIVELY CONTROLLED IN A PREDETERMINED RELATIONSHIP TO THE DRAW ROLLS SPEED DURING THE FIRST PART OF SAID PERIOD UNTIL THE DRAW ROLLS BECOME STATIONARY, AND (D) BRINGING SAID SPINDLE TO REST AFTER THE DRAW ROLLS HAVE BECOME STATIONARY.
References Cited (Backward Citations)
US2682144A
Cited
US3009308A
Cited
GB946240A
Cited
US3277641A
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US3137987A
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US3325985A
Cited
US3316699A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-18 | 1971-06-19 | 1971-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-18 | 1975-06-19 | 1975-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-18 | 1979-06-19 | 1979-12-19 | $7700.00 | Window Closed / Lapsed |