US3128606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cooling device
Assignee: MCDONOUGH STEEL CO
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Filing: 1961-05-18
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Granted: 1964-04-14
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Expires: 1981-05-18
Abstract
No abstract record available.
Inventors
- 👤 Elwin J Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:09
CPC Classifications
A; A23; A23B; A23B7/00; A23B7/04; A23B7/0408; F; F25; F25D; F25D31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A PROCESS FOR COOLING A MATERIAL WHICH IS AMENABLE TO VACUUM COOLING COMPRISING: PASSING SAID MATERIAL IN A MOIST CONDITION INTO A VACUUM ZONE MAINTAINED AT A PREDETERMINED GAS PRESSURE, SAID PREDETERMINED PRESSURE BEING THE PRESSURE EQUIVALENT TO THE SATURATION TEMPERATURE CORRESPONDING TO THE ULTIMATE MATERIAL TEMPERATURE DESIRED, SAID MATERIAL, PRIOR TO ENTERING SAID VACUUM ZONE, BEING UNDER A PRESSURE IN EXCESS OF THAT REQUIRED TO PERMIT THE SAID MOISTURE TO FLASH OFF THEREFROM, SAID VACUUM ZONE BEING SUFFICIENTLY SMALL THAT ON ENTRY OF THE MATERIAL TO BE TREATED THEREIN, THE GAS PRESSURE WITHIN SAID VACUUM ZONE RISES TO A LEVEL SUBSTANTIALLY EQUIVALENT TO THE SATURATION TEMPERATURE WHICH CORRESPONDS TO THE ENTERING MATERIAL TEMPERATURE, EXHAUSTING GAS FROM SAID ZONE WHILE RETAINING SAID MATERIAL IN SAID ZONE UNTIL THE GAS PRESSURE AGAIN REACHES SAID PREDETERMINED PRESSURE.
Claim 2
Dependent Claim
135 words
A PROCESS FOR COOLING A MATERIAL WHICH IS AMENABLE TO VACUUM COOLING COMPRISING: PASSING SAID MATERIAL IN A MOIST CONDITION INTO A VACUUM ZONE MAINTAINED AT A PREDETERMINED GAS PRESSURE, SAID PREDETERMINED PRESSURE BEING THE PRESSURE EQUIVALENT TO THE SATURATION TEMPERATURE CORRESPONDING TO THE ULTIMATE MATERIAL TEMPERATURE DESIRED, SAID MATERIAL, PRIOR TO ENTERING SAID VACUUM ZONE, BEING UNDER A PRESSURE IN EXCESS OF THAT REQUIRED TO PERMIT THE SAID MOISTURE TO FLASH OFF THEREFROM, SAID VACUUM ZONE BEING SUFFICIENTLY SMALL THAT ON ENTRY OF THE MATERIAL TO BE TREATED THEREIN, THE GAS PRESSURE WITHIN SAID VACUUM ZONE RISES TO A LEVEL SUBSTANTIALLY EQUIVALENT TO THE SATURATION TEMPERATURE WHICH CORRESPONDS TO THE ENTERING MATERIAL TEMPERATURE, EXHAUSTING GAS FROM SAID ZONE WHILE RETAINING SAID MATERIAL IN SAID ZONE UNTIL THE GAS PRESSURE AGAIN REACHES SAID PREDETERMINED PRESSURE.
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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |