US3091805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for drawing yarn
Assignee: EIDP Inc
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Filing: 1960-11-02
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Granted: 1963-06-04
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Expires: 1980-11-02
Abstract
No abstract record available.
Inventors
- 👤 Charles E Dusenbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:53
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
AN APPARATUS FOR DRAWING ONE OR MORE YARNS OF SYNTHETIC LINEAR CONDENSATION POLYMER FILAMENTS COMPRISING A ROTATABLE FEED ROLL, A HORIZONTALLY DISPOSED DRAW PIN, AND A DRAW ROLL ADAPTED TO BE ROTATED AT A HIGHER SURFACE SPEED THAN THE FEED ROLL SO THAT YARN PASSING FROM THE FEED ROLL UNDER THE DRAW PIN TO THE DRAW ROLL IS DRAWN; MEANS FOR MAINTAINING A LIQUID BATH IN CONTACT WITH THE SAID DRAW PIN; A STRIPPER PIN LOCATED ABOVE THE SAID DRAW PIN BETWEEN IT AND THE DRAW ROLL AND POSITIONED TO ESTABLISH AN ABRUPT ANGLE IN THE PATH OF THE YARN BETWEEN THE DRAW PIN AND DRAW ROLL; MEANS INCLUDING THE FEED ROLL AND THE DRAW ROLL FOR PASSING THE YARN AT A HIGH RATE OF SPEED IN NON-CONVERGING RELATION UNDER THE DRAW PIN AND THROUGH THE LIQUID AND THENCE UPWARDLY OVER THE STRIPPER PIN WHEREBY THE LIQUID TAKEN UP BY THE YARN FROM THE BATH LEAVES THE YARN AS A SPRAY AS THE YARN PASSES OVER THE STRIPPER PIN; AND MEANS FOR COLLECTING THE LIQUID SPRAY.
Claim 2
Independent Claim
176 words
AN APPARATUS FOR DRAWING ONE OR MORE YARNS OF SYNTHETIC LINEAR CONDENSATION POLYMER FILAMENTS COMPRISING A ROTATABLE FEED ROLL, A HORIZONTALLY DISPOSED DRAW PIN, AND A DRAW ROLL ADAPTED TO BE ROTATED AT A HIGHER SURFACE SPEED THAN THE FEED ROLL SO THAT YARN PASSING FROM THE FEED ROLL UNDER THE DRAW PIN TO THE DRAW ROLL IS DRAWN; MEANS FOR MAINTAINING A LIQUID BATH IN CONTACT WITH THE SAID DRAW PIN; A STRIPPER PIN LOCATED ABOVE THE SAID DRAW PIN BETWEEN IT AND THE DRAW ROLL AND POSITIONED TO ESTABLISH AN ABRUPT ANGLE IN THE PATH OF THE YARN BETWEEN THE DRAW PIN AND DRAW ROLL; MEANS INCLUDING THE FEED ROLL AND THE DRAW ROLL FOR PASSING THE YARN AT A HIGH RATE OF SPEED IN NON-CONVERGING RELATION UNDER THE DRAW PIN AND THROUGH THE LIQUID AND THENCE UPWARDLY OVER THE STRIPPER PIN WHEREBY THE LIQUID TAKEN UP BY THE YARN FROM THE BATH LEAVES THE YARN AS A SPRAY AS THE YARN PASSES OVER THE STRIPPER PIN; AND MEANS FOR COLLECTING THE LIQUID SPRAY.
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) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |