US3119239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for cooling and drying air
Assignee: American Air Filter Co Inc
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Filing: 1961-08-18
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Granted: 1964-01-28
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Expires: 1981-08-18
Abstract
No abstract record available.
Inventors
- 👤 Stig G Sylvan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:25
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1405; F24F3/153; F24F5/00; F24F5/0007; F24F5/001; Y; Y10; Y10S; Y10S261/00; Y10S261/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A METHOD FOR COOLING AIR AND REMOVING MOISTURE THEREFROM: PRECOOLING A QUANTITY OF PRIMARY AIR IN AN UPSTREAM ZONE TO A TEMPERARE CLOSE TO FREEZING; ADDING A SUFFICIENT QUANTITY OF AUXILIARY AIR AT A TEMPERATURE BELOW FREEZING TO SAID PRE-COOLED AIR TO OBTAIN A TEMPERATURE OF SAID COMBINED AIR BELOW FREEZING WHEREBY A PART OF THE MOISTURE IN SAID COMBINED AIR IS CONDENSED IN SOLID FORM; COOLING SAID COMBINED AIR TO A SUBSTANTIALLY LOWER TEMPERATURE BY PASSING IT THROUGH A HEAT EXCHANGER HAVING A SURFACE TEMPERATURE SUBSTANTIALLY BELOW FREEZING; AND THEN SEPARATING AND REMOVING MOISTURE IN SOLID FROZEN PARTICLE FORM FROM SAID COMBINED AIR STREAM.
Claim 2
Dependent Claim
106 words
IN A METHOD FOR COOLING AIR AND REMOVING MOISTURE THEREFROM: PRECOOLING A QUANTITY OF PRIMARY AIR IN AN UPSTREAM ZONE TO A TEMPERARE CLOSE TO FREEZING; ADDING A SUFFICIENT QUANTITY OF AUXILIARY AIR AT A TEMPERATURE BELOW FREEZING TO SAID PRE-COOLED AIR TO OBTAIN A TEMPERATURE OF SAID COMBINED AIR BELOW FREEZING WHEREBY A PART OF THE MOISTURE IN SAID COMBINED AIR IS CONDENSED IN SOLID FORM; COOLING SAID COMBINED AIR TO A SUBSTANTIALLY LOWER TEMPERATURE BY PASSING IT THROUGH A HEAT EXCHANGER HAVING A SURFACE TEMPERATURE SUBSTANTIALLY BELOW FREEZING; AND THEN SEPARATING AND REMOVING MOISTURE IN SOLID FROZEN PARTICLE FORM FROM SAID COMBINED AIR STREAM.
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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |