US3353210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectangular convergence guide
Assignee: EIDP Inc
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Filing: 1965-12-09
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Granted: 1967-11-21
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Expires: 1985-12-09
Abstract
No abstract record available.
Inventors
- 👤 Milton S Herring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:21
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN APPARATUS FOR MELT SPINNING A LARGE NUMBER OF FILAMENTS AT HIGH SPEED FROM A SINGLE SPINNERET WHEREIN THE HOT FILAMENTS ARE CONVERGED INTO A BUNDLE AND A PROTECTIVE FINISH IS APPLIED BEFORE THE FILAMENTS PASS TO A TAKE-OFF WHEEL, THE IMPROVEMENT OF A CONVERGENCE GUIDE FOR ASSEMBLING THE FILAMENTS INTO A YARN BUNDLE OF UNIFORM, ESSENTIALLY RECTILINEAR CROSS-SECTION, SAID GUIDE HAVING AN ESSENTIALLY LINEAR PRIMARY YARN-CONTACTING SURFACE OF SMOOTHLY-ROUNDED CONTOUR FOR CONVERGING THE FILAMENTS INTO A FLAT BUNDLE AND CONTIGUOUS YARN-CONTACTING SURFACES OF SMOOTHLY-ROUNDED CONTOUR FOR CONTROLLING THE WIDTH OF THE YARN BUNDLE, WHEREIN SAID YARN-CONTACTING SURFACES OF THE CONVERGENCE GUIDE FORM AN ESSENTIALLY RECTILINEAR APERTURE HAVING ROUNDED ENDS, SAID SURFACES BEING JOINED IN SMOOTHLY-ROUNDED CONTOURS.
Claim 2
Dependent Claim
117 words
IN APPARATUS FOR MELT SPINNING A LARGE NUMBER OF FILAMENTS AT HIGH SPEED FROM A SINGLE SPINNERET WHEREIN THE HOT FILAMENTS ARE CONVERGED INTO A BUNDLE AND A PROTECTIVE FINISH IS APPLIED BEFORE THE FILAMENTS PASS TO A TAKE-OFF WHEEL, THE IMPROVEMENT OF A CONVERGENCE GUIDE FOR ASSEMBLING THE FILAMENTS INTO A YARN BUNDLE OF UNIFORM, ESSENTIALLY RECTILINEAR CROSS-SECTION, SAID GUIDE HAVING AN ESSENTIALLY LINEAR PRIMARY YARN-CONTACTING SURFACE OF SMOOTHLY-ROUNDED CONTOUR FOR CONVERGING THE FILAMENTS INTO A FLAT BUNDLE AND CONTIGUOUS YARN-CONTACTING SURFACES OF SMOOTHLY-ROUNDED CONTOUR FOR CONTROLLING THE WIDTH OF THE YARN BUNDLE, WHEREIN SAID YARN-CONTACTING SURFACES OF THE CONVERGENCE GUIDE FORM AN ESSENTIALLY RECTILINEAR APERTURE HAVING ROUNDED ENDS, SAID SURFACES BEING JOINED IN SMOOTHLY-ROUNDED CONTOURS.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |