US3309786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heated roll
Assignee: FMC Corp
•
Filing: 1965-03-18
•
Granted: 1967-03-21
•
Expires: 1985-03-18
Abstract
No abstract record available.
Inventors
- 👤 John D Conti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:42
CPC Classifications
B; B29; B29D; B29D7/00; D; D06; D06C; D06C15/00; D06C15/08; D21; D21F; D21F5/00; D21F5/02; B29C; B29C71/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A HEATED ROLL INCLUDING A PAIR OF ROTATABLE DRUMS EACH HAVING AN ANNULAR WALL AND CLOSED END WALLS, ONE OF SAID DRUMS POSITIONED WITHIN THE OTHER AND BEING SPACED FROM THE ANNULAR AND END WALLS THEREOF, THE SPACES BETWEEN THE ADJACENT DRUM END WALLS FORMING FLUID INLET AND OUTLET CHAMBERS, MEANS FOR DELIVERING A HEATED FLUID INTO SAID INLET CHAMBER, MEANS FOR DISCHARGING SPENT FLUID FROM SAID OUTLET CHAMBER, MEANS PARTITIONING THE SPACE BETWEEN THE DRUM ANNULAR WALLS INTO A HELICAL CHANNEL EXTENDING BETWEEN SAID INLET AND OUTLET CHAMBERS, MEANS PROVIDING A FLUID SUPPLY CHAMBER ADJACENT TO SAID INLET CHAMBER, MEANS FOR DELIVERING A HEATED FLUID INTO SAID SUPPLY CHAMBER, A SERIES OF CONDUITS EXTENDING FROM SAID SUPPLY CHAMBER AND OPENING INTO SAID HELICAL CHANNEL AT DIFFERENT LOCATIONS SPACED LONGITUDINALLY OF SAID INNER DRUM, AND VALVE MEANS FOR INDIVIDUALLY CONTROLLING THE FLOW OF HEATED FLUID INTO SAID CONDUITS FROM SAID SUPPLY CHAMBER.
Claim 2
Dependent Claim
152 words
A HEATED ROLL INCLUDING A PAIR OF ROTATABLE DRUMS EACH HAVING AN ANNULAR WALL AND CLOSED END WALLS, ONE OF SAID DRUMS POSITIONED WITHIN THE OTHER AND BEING SPACED FROM THE ANNULAR AND END WALLS THEREOF, THE SPACES BETWEEN THE ADJACENT DRUM END WALLS FORMING FLUID INLET AND OUTLET CHAMBERS, MEANS FOR DELIVERING A HEATED FLUID INTO SAID INLET CHAMBER, MEANS FOR DISCHARGING SPENT FLUID FROM SAID OUTLET CHAMBER, MEANS PARTITIONING THE SPACE BETWEEN THE DRUM ANNULAR WALLS INTO A HELICAL CHANNEL EXTENDING BETWEEN SAID INLET AND OUTLET CHAMBERS, MEANS PROVIDING A FLUID SUPPLY CHAMBER ADJACENT TO SAID INLET CHAMBER, MEANS FOR DELIVERING A HEATED FLUID INTO SAID SUPPLY CHAMBER, A SERIES OF CONDUITS EXTENDING FROM SAID SUPPLY CHAMBER AND OPENING INTO SAID HELICAL CHANNEL AT DIFFERENT LOCATIONS SPACED LONGITUDINALLY OF SAID INNER DRUM, AND VALVE MEANS FOR INDIVIDUALLY CONTROLLING THE FLOW OF HEATED FLUID INTO SAID CONDUITS FROM SAID SUPPLY CHAMBER.
References Cited (Backward Citations)
US1583333A
Cited
US2068077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |