US3275074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate type evaporative cooler and wick therefor
Assignee: United Aircraft Products Inc
•
Filing: 1963-09-10
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Granted: 1966-09-27
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Expires: 1983-09-10
Abstract
No abstract record available.
Inventors
- 👤 Robert L Campbell
- 👤 Mohamed B Kudsi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:46
CPC Classifications
F; F28; F28D; F28D5/00; Y; Y10; Y10S; Y10S159/00; Y10S159/906; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387; Y10S165/391
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
EVAPORATIVE COOLING MEANS IN A PLATE-TYPE HEAT EXCHANGER, INCLUDING AT LEAST TWO SPACED APART PAIRS OF HEAT CONDUCTIVE PLATES, EACH PAIR DEFINING A FLOW PATH FOR A HEATED FLUID, A LAYER OF LIQUID HOLDING MATERIAL INTERMEDIATELY DISPOSED BETWEEN SAID PAIRS OF PLATES AND SPACED THEREFROM, AND MULTIPLE PURPOSE STRIP FIN DEVICES AN OPPOSITE SIDES OF SAID LAYER OF MATERIAL IN MUTUALLY CONTACTING HEAT TRANSMITTING RELATION BETWEEN SAID PAIRS OF PLATES AND SAID LIQUID HOLDING MATERIAL, SAID DEVICES
Claim 2
Dependent Claim
77 words
EVAPORATIVE COOLING MEANS IN A PLATE-TYPE HEAT EXCHANGER, INCLUDING AT LEAST TWO SPACED APART PAIRS OF HEAT CONDUCTIVE PLATES, EACH PAIR DEFINING A FLOW PATH FOR A HEATED FLUID, A LAYER OF LIQUID HOLDING MATERIAL INTERMEDIATELY DISPOSED BETWEEN SAID PAIRS OF PLATES AND SPACED THEREFROM, AND MULTIPLE PURPOSE STRIP FIN DEVICES AN OPPOSITE SIDES OF SAID LAYER OF MATERIAL IN MUTUALLY CONTACTING HEAT TRANSMITTING RELATION BETWEEN SAID PAIRS OF PLATES AND SAID LIQUID HOLDING MATERIAL, SAID DEVICES
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |