US2711591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for dehydrating and drying of web-like material
Assignee: Svenska Flaktfabriken AB
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Filing: 1951-05-24
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Granted: 1955-06-28
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Expires: 1971-05-24
Abstract
No abstract record available.
Inventors
- 👤 Wellmar Sven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:37
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/24; F26B13/28; D; D21; D21F; D21F5/00; F26B13/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN THE METHOD OF DEHYDRATING AND SUBSEQUENTLY DRYING WET WEB MATERIAL, THE STEPS WHICH COMPRISES DEHYDRATING THE WEB BY EXPRESSING A PART OF THE MOISTURE FROM THE WET WEB MATERIAL, DECREASING THE VISCOSITY OF THE REMAINING MOISTURE BY PREHEATING THE WEB AND EXPRESSING A PORTION OF THE REMAINING MOISTURE FROM THE PREHEATED WEB; SUBSEQUENTLY DRYING THE WEB BY PASSING THE WEB THROUGH A DRYING CHAMBER AND CAUSING HEATED AIR TO CIRCULATE THROUGH SAID CHAMBER INTO CONTACT WITH SAID WEB TO DRY THE LATTER; AND UTILIZING THE EXHAUST HOT AIR FROM THE DRYING CHAMBER AS THE SOURCE OF HEAT FOR SAID PREHEATED OF THE WEB.
Claim 2
Dependent Claim
104 words
IN THE METHOD OF DEHYDRATING AND SUBSEQUENTLY DRYING WET WEB MATERIAL, THE STEPS WHICH COMPRISES DEHYDRATING THE WEB BY EXPRESSING A PART OF THE MOISTURE FROM THE WET WEB MATERIAL, DECREASING THE VISCOSITY OF THE REMAINING MOISTURE BY PREHEATING THE WEB AND EXPRESSING A PORTION OF THE REMAINING MOISTURE FROM THE PREHEATED WEB; SUBSEQUENTLY DRYING THE WEB BY PASSING THE WEB THROUGH A DRYING CHAMBER AND CAUSING HEATED AIR TO CIRCULATE THROUGH SAID CHAMBER INTO CONTACT WITH SAID WEB TO DRY THE LATTER; AND UTILIZING THE EXHAUST HOT AIR FROM THE DRYING CHAMBER AS THE SOURCE OF HEAT FOR SAID PREHEATED OF THE WEB.
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US1515614A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |