US3331434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transfer roll
Assignee: National Drying Machinery Co
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Filing: 1965-06-29
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Granted: 1967-07-18
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Expires: 1985-06-29
Abstract
No abstract record available.
Inventors
- 👤 Frank N Lockhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:50
CPC Classifications
F; F28; F28D; F28D11/00; F28D11/02; F28F; F28F5/00; F28F5/02; Y; Y10; Y10S; Y10S165/00; Y10S165/135; Y10S165/139; Y10S165/156
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A HEAT TRANSFER ROLL INCLUDING: MEANS DEFINING A JACKET ADAPTED TO RECEIVE A FLUID TRANSFER MEDIUM, A RESERVOIR ADAPTED TO RECEIVE A FLUID MEDIUM AND COMMUNICATING WITH SAID JACKET, MEANS SECURING SAID RESERVOIR TO SAID ROLL, AND MEANS FOR JOINTLY ROTATING SAID ROLL AND SAID RESERVOIR WHEREBY CENTRIFUGAL FORCE DRIVES FLUID FROM SAID RESERVOIR INTO SAID JACKET DURING ROTATION THEREOF, SAID RESERVOIR BEING SO RELATED TO SAID JACKET THAT, IN THE ABSENCE OF CENTRIFUGAL FORCE, LIQUID FLOWS FROM SAID JACKET INTO THE RESERVOIR.
Claim 2
Dependent Claim
83 words
A HEAT TRANSFER ROLL INCLUDING: MEANS DEFINING A JACKET ADAPTED TO RECEIVE A FLUID TRANSFER MEDIUM, A RESERVOIR ADAPTED TO RECEIVE A FLUID MEDIUM AND COMMUNICATING WITH SAID JACKET, MEANS SECURING SAID RESERVOIR TO SAID ROLL, AND MEANS FOR JOINTLY ROTATING SAID ROLL AND SAID RESERVOIR WHEREBY CENTRIFUGAL FORCE DRIVES FLUID FROM SAID RESERVOIR INTO SAID JACKET DURING ROTATION THEREOF, SAID RESERVOIR BEING SO RELATED TO SAID JACKET THAT, IN THE ABSENCE OF CENTRIFUGAL FORCE, LIQUID FLOWS FROM SAID JACKET INTO THE RESERVOIR.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |