Patent US4456180A successfully refreshed from Google Patents.
Patent US3262496A successfully refreshed from Google Patents.
US3262496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger construction
Assignee: RTX Corp
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Filing: 1964-06-26
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Granted: 1966-07-26
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Expires: 1984-06-26
Abstract
No abstract record available.
Inventors
- 👤 Rafael R Bawabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:27
CPC Classifications
F; F28; F28D; F28D9/00; F28D9/0062; F28D9/0068; F28F; F28F2250/00; F28F2250/10; F28F2250/102; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387; Y10S165/388; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49373
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
IN A MULTI-PASS, MULTI-CHANNEL HEAT EXCHANGER COMPRISING A CORE HAVING A PLANAR SIDE, SAID CORE INCLUDING A PLURALITY OF STACKED LAYERS, EACH LAYER HAVING A CONTINUOUS FIN ELEMENT, SPACED PLATES SANDWICHING THE SIDES OF SAID FIN ELEMENT DEFINING THEREWITH A SERIES OF SEPARATE PARALLEL OPEN ENDED CHANNELS, SAID FIN ELEMENTS IN ALTERNATE LAYERS TERMINATING AT SAID PLANAR SIDE, CLOSURE BARS IN ALTERNATE LAYERS HAVING AN ELONGATED PORTION TERMINATING AT SAID SIDE, MEANS FOR SUPPORTING HEADERS ADJACENT SAID SIDE COMPRISING A PLURALITY OF MAIN BODIES EACH OF WHICH INCLUDE A REARWARDLY EXTENDING PORTION ADAPTED TO FIT INTO A GROOVE CUT INTO A SECTION OF SAID FIN ELEMENTS OF ALTERNATE LAYERS AND ABUT SAID SPACED PLATES, A FORWARD PROJECTING PORTION ADJACENT SAID REARWARDLY EXTENDING PORTION PROJECTING BEYOND THE SIDE OF SAID CORE, WHEREBY SAID FORWARD PROJECTING PORTION OF EACH MAIN BODY DEFINES A RIB EXTENDING THE DEPTH OF SAID CORE.
Claim 2
Dependent Claim
148 words
IN A MULTI-PASS, MULTI-CHANNEL HEAT EXCHANGER COMPRISING A CORE HAVING A PLANAR SIDE, SAID CORE INCLUDING A PLURALITY OF STACKED LAYERS, EACH LAYER HAVING A CONTINUOUS FIN ELEMENT, SPACED PLATES SANDWICHING THE SIDES OF SAID FIN ELEMENT DEFINING THEREWITH A SERIES OF SEPARATE PARALLEL OPEN ENDED CHANNELS, SAID FIN ELEMENTS IN ALTERNATE LAYERS TERMINATING AT SAID PLANAR SIDE, CLOSURE BARS IN ALTERNATE LAYERS HAVING AN ELONGATED PORTION TERMINATING AT SAID SIDE, MEANS FOR SUPPORTING HEADERS ADJACENT SAID SIDE COMPRISING A PLURALITY OF MAIN BODIES EACH OF WHICH INCLUDE A REARWARDLY EXTENDING PORTION ADAPTED TO FIT INTO A GROOVE CUT INTO A SECTION OF SAID FIN ELEMENTS OF ALTERNATE LAYERS AND ABUT SAID SPACED PLATES, A FORWARD PROJECTING PORTION ADJACENT SAID REARWARDLY EXTENDING PORTION PROJECTING BEYOND THE SIDE OF SAID CORE, WHEREBY SAID FORWARD PROJECTING PORTION OF EACH MAIN BODY DEFINES A RIB EXTENDING THE DEPTH OF SAID CORE.
References Cited (Backward Citations)
US2959400A
Cited
US2961222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |