US3081556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sieve drum driers
Assignee: Truetzschler Nonwovens GmbH
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Filing: 1959-09-04
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Granted: 1963-03-19
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Expires: 1979-09-04
Abstract
No abstract record available.
Inventors
- 👤 Fleissner Hans
- 👤 Fleissner Gerold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:25
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/16; D; D21; D21F; D21F5/00; D21F5/02; Y; Y10; Y10S; Y10S68/00; Y10S68/902; Y10S68/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A SIEVE DRUM DRIER FOR LOOSE FIBROUS MATTER, TEXTILES, WEBS AND THE LIKE COMPRISING A PLURALITY OF SIEVE DRUMS MOUNTED PARALLEL AND CLOSELY ADJACENT EACH OTHER, EACH DRUM HAVING ONE CLOSED END AND ONE OPEN END, A TURBINE-TYPE SUCTION FAN CONNECTED TO THE OPEN END OF EACH RESPECTIVE DRUM, SAID FAN HAVING A DIAMETER LARGER THAN THAT OF ITS RESPECTIVE DRUM BUT LESS THAN TWICE THE DIAMETER OF THE DRUM FOR REMOVING DRYING AIR FROM THE INTERIOR OF THE DRUM THROUGH THE OPEN END AND BACK TO THE OUTER SURFACE OF THE DRUM, EACH FAN BEING POSITIONED ALTERNATELY ON OPPOSITE ENDS OF THE DRUMS, HEATER MEANS FOR HEATING THE AIR REMOVED FROM EACH DRUM, AND A HOUSING ENCLOSING SAID DRUMS, FANS AND HEATER MEANS.
Claim 2
Dependent Claim
124 words
A SIEVE DRUM DRIER FOR LOOSE FIBROUS MATTER, TEXTILES, WEBS AND THE LIKE COMPRISING A PLURALITY OF SIEVE DRUMS MOUNTED PARALLEL AND CLOSELY ADJACENT EACH OTHER, EACH DRUM HAVING ONE CLOSED END AND ONE OPEN END, A TURBINE-TYPE SUCTION FAN CONNECTED TO THE OPEN END OF EACH RESPECTIVE DRUM, SAID FAN HAVING A DIAMETER LARGER THAN THAT OF ITS RESPECTIVE DRUM BUT LESS THAN TWICE THE DIAMETER OF THE DRUM FOR REMOVING DRYING AIR FROM THE INTERIOR OF THE DRUM THROUGH THE OPEN END AND BACK TO THE OUTER SURFACE OF THE DRUM, EACH FAN BEING POSITIONED ALTERNATELY ON OPPOSITE ENDS OF THE DRUMS, HEATER MEANS FOR HEATING THE AIR REMOVED FROM EACH DRUM, AND A HOUSING ENCLOSING SAID DRUMS, FANS AND HEATER MEANS.
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |