Patent US4397025A successfully refreshed from Google Patents.
Patent US3151672A successfully refreshed from Google Patents.
US3151672A
Expired / Lapsed
US
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Water cooled air cooler
Assignee: Westinghouse Air Brake Co
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Filing: 1961-10-30
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Granted: 1964-10-06
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Expires: 1981-10-30
Abstract
No abstract record available.
Inventors
- 👤 John R Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:29
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/026; F28F9/0282; F24; F24F; F24F5/00; F24F5/0007; F28D; F28D7/00; F28D7/10; F28D7/106; F28F1/00; F28F1/10; F28F1/12; F28F1/34; F28F1/36; F28F1/40; F28F9/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
A WATER COOLED AIR COOLING DEVICE COMPRISING AN OUTER TUBE AND AN INNER TUBE LOCATED CONCENTRICALLY THEREIN AND AXIALLY REMOVABLE THEREFROM, SAID INNER TUBE DEFINING A WATER PASSAGE AND THE ANNULAR SPACE BETWEEN SAID TUBES DEFINING AN AIR PASSAGE, A HEADER SECURED AT EACH END OF SAID TUBES, SAID HEADERS BEING IDENTICAL AND HAVING AN AIR CHAMBER EXTENDING THERETHROUGH AND IN COMMUNICATION WITH SAID AIR PASSAGE, AND A WATER DIVIDER THREADABLY SECURED IN EACH OF SAID HEADERS FOR REMOVAL FROM THE OUTSIDE THEREOF AND IN AN AXIAL DIRECTION WITH RESPECT TO SAID TUBES, EACH OF SAID DIVIDERS HAVING AN ELONGATED NOZZLE OF REDUCED CROSS SECTION SEALINGLY INSERTABLE IN THE ADJACENT END OF SAID INNER TUBE AND SAID DIVIDERS EACH
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) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |