Patent US2649394A successfully refreshed from Google Patents.
US2649394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-laying fiber felts
Assignee: Wood Conversion Co
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Filing: 1951-06-29
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Granted: 1953-08-18
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Expires: 1971-06-29
Abstract
No abstract record available.
Inventors
- 👤 Allen M Crewson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:17
CPC Classifications
D; D04; D04H; D04H1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
THE METHOD WHICH COMPRISES PROJECTING INTO A DEPOSITING CHAMBER A CONTINUOUS STREAM OF DRY SUBSTANTIALLY INDIVIDUALIZED VEGETABLE FIBERS FOR DEPOSITION BY GRAVITY IN THE BOTTOM OF SAID CHAMBER FROM SUSPENSION IN AIR IN SAID CHAMBER, CONTINUOUSLY INJECTING AQUEOUS MIST PARTICLES OF LIQUID INTO SAID CHAMBER FOR APPLYING MIST PARTICLES TO FIBERS FALLING THEREIN FOR DEPOSITION, SAID MIST INCIDENTALLY WETTING THE DEFINING WALLS OF THE CHAMBER AND THEREBY CAUSING FIBERS TO COLLECT ON SAID WALLS AND GROW AS FESTOONS, THERE BEING MIST PARTICLES CONTAINING A STARCH SOL AS BONDING AGENT FOR INTEGRATING A FELT FORMED BY THE DEPOSITED FIBERS AND MIST PARTICLES CONTAINING TRIETHANOLAMINE OLEATE IN AN AMOUNT TO INTRODUCE INTO SAID CHAMBER FROM 0.04 PART TO 0.4 PART BY WEIGHT OF TRIETHANOLAMINE OLEATE TO 100 PARTS OF FIBER, SAID TRIETHANOLAMINE OLEATE BEING EFFECTIVE TO DECREASE THE RATE OF FORMATION AND THE SIZE OF FESTOONS.
Claim 2
Independent Claim
144 words
THE METHOD WHICH COMPRISES PROJECTING INTO A DEPOSITING CHAMBER A CONTINUOUS STREAM OF DRY SUBSTANTIALLY INDIVIDUALIZED VEGETABLE FIBERS FOR DEPOSITION BY GRAVITY IN THE BOTTOM OF SAID CHAMBER FROM SUSPENSION IN AIR IN SAID CHAMBER, CONTINUOUSLY INJECTING AQUEOUS MIST PARTICLES OF LIQUID INTO SAID CHAMBER FOR APPLYING MIST PARTICLES TO FIBERS FALLING THEREIN FOR DEPOSITION, SAID MIST INCIDENTALLY WETTING THE DEFINING WALLS OF THE CHAMBER AND THEREBY CAUSING FIBERS TO COLLECT ON SAID WALLS AND GROW AS FESTOONS, THERE BEING MIST PARTICLES CONTAINING A STARCH SOL AS BONDING AGENT FOR INTEGRATING A FELT FORMED BY THE DEPOSITED FIBERS AND MIST PARTICLES CONTAINING TRIETHANOLAMINE OLEATE IN AN AMOUNT TO INTRODUCE INTO SAID CHAMBER FROM 0.04 PART TO 0.4 PART BY WEIGHT OF TRIETHANOLAMINE OLEATE TO 100 PARTS OF FIBER, SAID TRIETHANOLAMINE OLEATE BEING EFFECTIVE TO DECREASE THE RATE OF FORMATION AND THE SIZE OF FESTOONS.
References Cited (Backward Citations)
US2189840A
Cited
US2256034A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |