US3101722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drum dryer
Assignee: AMF Inc
•
Filing: 1960-07-29
•
Granted: 1963-08-27
•
Expires: 1980-07-29
Abstract
No abstract record available.
Inventors
- 👤 Henry B Merritt
- 👤 Robert C Geitz
- 👤 William J Nellen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:50
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/28; F26B17/284
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN APPARATUS FOR FORMING AND DRYING A SELF-SUPPORTING TOBACCO SHEET FROM A TOBACCO SLURRY COMPRISING A REVOLVABLE CYLINDRICAL DRUM HAVING A SUBSTANTIALLY IMPERMEABLE FILM FORMING SURFACE, MEANS FOR APPLYING A COOLING FLUID TO SUCCESSIVE PORTIONS OF SAID SURFACE IMMEDIATELY BEFORE APPLYING TOBACCO SLURRY AND MEANS FOR DEPOSITING TOBACCO SLURY IN A CONTINUOUS LAYER TO THE PRECOOLED MOVING SURFACE, DIRECTED AIR MEANS FOR COOLING THE DEPOSITED SLURRY, INTERNAL HEATING MEANS WITHIN SAID DRUM FOR HEATING SAID DRUM SURFACE TO EVAPORATE LIQUID FROM THE DEPOSITED SLURRY TO FORM A CONTINUOUS SELFSUPPORTING TOBACCO SHEET AND MEANS TO REMOVE THE SHEET FROM SAID SURFACE.
Claim 2
Independent Claim
100 words
AN APPARATUS FOR FORMING AND DRYING A SELF-SUPPORTING TOBACCO SHEET FROM A TOBACCO SLURRY COMPRISING A REVOLVABLE CYLINDRICAL DRUM HAVING A SUBSTANTIALLY IMPERMEABLE FILM FORMING SURFACE, MEANS FOR APPLYING A COOLING FLUID TO SUCCESSIVE PORTIONS OF SAID SURFACE IMMEDIATELY BEFORE APPLYING TOBACCO SLURRY AND MEANS FOR DEPOSITING TOBACCO SLURY IN A CONTINUOUS LAYER TO THE PRECOOLED MOVING SURFACE, DIRECTED AIR MEANS FOR COOLING THE DEPOSITED SLURRY, INTERNAL HEATING MEANS WITHIN SAID DRUM FOR HEATING SAID DRUM SURFACE TO EVAPORATE LIQUID FROM THE DEPOSITED SLURRY TO FORM A CONTINUOUS SELFSUPPORTING TOBACCO SHEET AND MEANS TO REMOVE THE SHEET FROM SAID SURFACE.
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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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |