Patent US3313344A successfully refreshed from Google Patents.
US3313344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate fin heat exchanger with curved expansion tubes
Assignee: Motors Liquidation Co
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Filing: 1965-05-11
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Granted: 1967-04-11
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Expires: 1985-05-11
Abstract
No abstract record available.
Inventors
- 👤 Hayden John Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:26
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/026; F28F9/027; F28F9/0275; F28D; F28D9/00; F28D9/0031; F28F3/00; F28F3/02; F28F3/025; F28F2265/00; F28F2265/26; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/373
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A HEAT EXCHANGER COMPRISING A STACK OF PLATE SECTIONS, MANIFOLDING AT OPPOSITE SIDES OF SAID STACK SEPARATELY TO CONDUCT TWO FLUIDS, EACH SECTION BEING A UNIT INCLUDING TWO PLATES, AN INTERIOR FIN AND EXTERIOR FINS, SAID TWO PLATES AND INTERIOR FIN DEFINING PASSAGES FOR ONE OF SAID FLUIDS, SAID EXTERIOR FINS DEFINING PASSAGES FOR THE OTHER OF SAID FLUIDS, THE EXTERIOR FINS OF EACH OF SAID SECTIONS BEING FREE TO MOVE RELATIVELY WITH RESPECT TO THE EXTERIOR FINS OF AT LEAST ONE ADJACENT SECTION, SAID MANIFOLDING AT ONE OF SAID SIDES OF SAID STACK INCLUDING CURVED TUBES CONNECTING SAID PASSAGES FOR SAID ONE OF SAID FLUIDS TO A COMMON OPENING, AND A CASING SURROUNDING SAID CURVED TUBES AND CONNECTED AS A COMMON CONDUIT CONNECTED TO SAID PASSAGES FOR THE SAID OTHER FLUID.
Claim 2
Dependent Claim
132 words
A HEAT EXCHANGER COMPRISING A STACK OF PLATE SECTIONS, MANIFOLDING AT OPPOSITE SIDES OF SAID STACK SEPARATELY TO CONDUCT TWO FLUIDS, EACH SECTION BEING A UNIT INCLUDING TWO PLATES, AN INTERIOR FIN AND EXTERIOR FINS, SAID TWO PLATES AND INTERIOR FIN DEFINING PASSAGES FOR ONE OF SAID FLUIDS, SAID EXTERIOR FINS DEFINING PASSAGES FOR THE OTHER OF SAID FLUIDS, THE EXTERIOR FINS OF EACH OF SAID SECTIONS BEING FREE TO MOVE RELATIVELY WITH RESPECT TO THE EXTERIOR FINS OF AT LEAST ONE ADJACENT SECTION, SAID MANIFOLDING AT ONE OF SAID SIDES OF SAID STACK INCLUDING CURVED TUBES CONNECTING SAID PASSAGES FOR SAID ONE OF SAID FLUIDS TO A COMMON OPENING, AND A CASING SURROUNDING SAID CURVED TUBES AND CONNECTED AS A COMMON CONDUIT CONNECTED TO SAID PASSAGES FOR THE SAID OTHER FLUID.
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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |