US3094834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for simultaneously stretching and falsetwisting yarn
Assignee: British Nylon Spinners Ltd
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Filing: 1960-06-27
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Granted: 1963-06-25
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Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 Deeley John Colin
- 👤 Burgess John Llewellyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:21
CPC Classifications
D; D02; D02G; D02G1/00; D02G1/02; D02G1/0206; D02G1/022; D02G1/04; D02G1/08; D02G1/082; D02J; D02J1/00; D02J1/22; D02J1/225; D02J1/226; D02J1/229
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A YARN DRAWING APPARATUS COMPRISING MEANS FOR SUPPORTING A YARN PACKAGE; A FEED ROLL SPACED APART FROM SAID PACKAGE; A DRAW ROLL INCLUDING A HUB AND A CONVEX PERIPHERAL FLANGE, SAID FLANGE SURFACE BEING DEFINED BY A SURFACE OF ROTATION GENERATED BY A CURVED GEODESIC LINE CONNECTING THE POINTS AT WHICH THE YARN MAKES AND BREAKS CONTACT THEREWITH; A SNUBBING PIN SPACED APART FROM SAID FEED ROLLS AND POSITIONED IN OFFSET RELATIONSHIP WITH RESPECT TO THE PLANE OF SAID DRAW ROLL FLANGE AND OPERATIVE TO GUIDE YARN THEREFROM IN CONTACT WITH SAID DRAWN ROLL FLANGE SURFACE IN A DIRECTION DEFINING AN ANGLE RELATIVE TO THE AXIS OF SAID DRAW ROLL FLANGE WHICH IS A MAXIMUM OF APPROXIMATELY 60*; MEANS FOR HEATING THE YARN PRIOR TO PASSING THE SAME PAST SAID FLANGE SURFACE, THE RATIO OF SAID HUB TO SAID PERIPHERAL FLANGE BEING SUFFICIENT TO PRODUCE A FALSE TWIST OF AT LEAST 40 TURNS PER INCH.
Claim 2
Dependent Claim
155 words
A YARN DRAWING APPARATUS COMPRISING MEANS FOR SUPPORTING A YARN PACKAGE; A FEED ROLL SPACED APART FROM SAID PACKAGE; A DRAW ROLL INCLUDING A HUB AND A CONVEX PERIPHERAL FLANGE, SAID FLANGE SURFACE BEING DEFINED BY A SURFACE OF ROTATION GENERATED BY A CURVED GEODESIC LINE CONNECTING THE POINTS AT WHICH THE YARN MAKES AND BREAKS CONTACT THEREWITH; A SNUBBING PIN SPACED APART FROM SAID FEED ROLLS AND POSITIONED IN OFFSET RELATIONSHIP WITH RESPECT TO THE PLANE OF SAID DRAW ROLL FLANGE AND OPERATIVE TO GUIDE YARN THEREFROM IN CONTACT WITH SAID DRAWN ROLL FLANGE SURFACE IN A DIRECTION DEFINING AN ANGLE RELATIVE TO THE AXIS OF SAID DRAW ROLL FLANGE WHICH IS A MAXIMUM OF APPROXIMATELY 60*; MEANS FOR HEATING THE YARN PRIOR TO PASSING THE SAME PAST SAID FLANGE SURFACE, THE RATIO OF SAID HUB TO SAID PERIPHERAL FLANGE BEING SUFFICIENT TO PRODUCE A FALSE TWIST OF AT LEAST 40 TURNS PER INCH.
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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |