Patent US2953476A successfully refreshed from Google Patents.
US2953476A
Expired / Lapsed
US
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Treatment of yarns and the like with liquids
Assignee: British Cotton Industry Research Association
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Filing: 1957-12-18
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Granted: 1960-09-20
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Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Armstrong Luke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:18
CPC Classifications
D; D21; D21H; D21H23/00; D21H23/78; D06; D06B; D06B1/00; D06B1/10; D06B1/14; D06B1/144; D06B1/145; D06B1/146; D06B1/148; D21H5/00; D21H5/0005; D21H5/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
A METHOD OF CONTINUOUSLY APPLYING, AT A SUBSTANTIALLY UNIFORM RATE, TO MATERIAL A SUBSTANCE CONTAINED IN A LIQUID, WHICH COMPRISES THE STEPS OF FEEDING TO A MIXING ZONE CONCENTRATED LIQUID CONTAINING SAID SUBSTRATE AT A RATE OF FEED SUBSTANTIALLY EQUAL TO THE RATE AT WHICH THE SUBSTANCE IS TO BE TAKEN UP BY THE MATERIAL, FEEDING TO SAID MIXING ZONE A DILUTING LIQUID, PASSING SAID MATERIAL BETWEEN TWO ROTATING ROLLS DISPOSED SIDE-BY-SIDE TO ONE ANOTHER, CONTINUOUSLY WITHDRAWING AND CIRCULATING DILUTED LIQUID FROM SAID MIXING ZONE AT A RATE IN EXCESS OF THAT AT WHICH DILUTED LIQUID IS TAKEN UP BY THE MATERIAL, FEEDING SAID WITHDRAWN LIQUID TO AN UPWARDLY DIRECTED BIGHT BETWEEN SAID ROLLS TO ESTABLISH A QUANTITY OF LIQUID IN SAID BIGHT, DRAINING AND RETURNING TO SAID MIXING ZONE EXCESS WITHDRAWN LIQUID, SENSING ANY VARIATIONS IN THE QUANTITY OF DILUTED IN SAID MIXING ZONE AND VARYING THE RATE OF FEED OF DILUTING LIQUID THERETO IN ACCORDANCE THEREWITH.
Claim 2
Independent Claim
158 words
A METHOD OF CONTINUOUSLY APPLYING, AT A SUBSTANTIALLY UNIFORM RATE, TO MATERIAL A SUBSTANCE CONTAINED IN A LIQUID, WHICH COMPRISES THE STEPS OF FEEDING TO A MIXING ZONE CONCENTRATED LIQUID CONTAINING SAID SUBSTRATE AT A RATE OF FEED SUBSTANTIALLY EQUAL TO THE RATE AT WHICH THE SUBSTANCE IS TO BE TAKEN UP BY THE MATERIAL, FEEDING TO SAID MIXING ZONE A DILUTING LIQUID, PASSING SAID MATERIAL BETWEEN TWO ROTATING ROLLS DISPOSED SIDE-BY-SIDE TO ONE ANOTHER, CONTINUOUSLY WITHDRAWING AND CIRCULATING DILUTED LIQUID FROM SAID MIXING ZONE AT A RATE IN EXCESS OF THAT AT WHICH DILUTED LIQUID IS TAKEN UP BY THE MATERIAL, FEEDING SAID WITHDRAWN LIQUID TO AN UPWARDLY DIRECTED BIGHT BETWEEN SAID ROLLS TO ESTABLISH A QUANTITY OF LIQUID IN SAID BIGHT, DRAINING AND RETURNING TO SAID MIXING ZONE EXCESS WITHDRAWN LIQUID, SENSING ANY VARIATIONS IN THE QUANTITY OF DILUTED IN SAID MIXING ZONE AND VARYING THE RATE OF FEED OF DILUTING LIQUID THERETO IN ACCORDANCE THEREWITH.
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) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |