US3363681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Union Carbide Corp
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Filing: 1967-01-24
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Granted: 1968-01-16
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Expires: 1987-01-24
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Revilock
- 👤 Samuel H S Raub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:11
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/02; F28D; F28D9/00; F28D9/0062; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/356; Y10S165/387; Y10S165/905; Y10S165/909
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
A HEAT EXCHANGER, COMPRISING: (A) A CASING HAVING INLET MEANS AND OUTLET MEANS FOR TWO DIFFERENT FLUIDS WHICH ARE TO UNDERGO HEAT EXCHANGE IN SAID HEAT EXCHANGER; (B) A PLURALITY OF BOX SECTIONS EACH COMPRISING A FIRST ANGLE IRON FRAME, A SECOND ANGLE IRON FRAME, AND A PLURALITY OF SPACERS SECURED TO SAID FIRST AND SECOND FRAMES, SAID SPACERS ON EACH FRAME BEING PLACED ON OPPOSITE SIDES OF SAID FRAME AND IN A PAIR RELATIONSHIP, SAID BOX SECTIONS BEING POSITIONED ADJACENT EACH OTHER; (C) A PLURALITY OF UNIT GRAPHITE CELLS, SAID CELLS COMPRISING A PAIR OF THIN SLABS SEPARATED BY A PAIR OF SIDE EDGE PLATES AND A PLURALITY OF SPACERS, THE EDGE PLATES AND THE SPACERS BEING SECURED TO THE SLABS, EACH OF SAID UNIT CELLS BEING POSITIONED IN SAID BOX SECTIONS AND BEING ALIGNED AND SEPARATED BY SAID SPACERS ON SAID FRAMES, ONE OF SAID FLUIDS FLOWING FROM ONE OF SAID INLET MEANS THROUGH SAID UNIT CELLS TO SAID OUTLET MEANS, AND THE OTHER OF SAID FLUIDS FLOWING THROUGH THE SPACE BETWEEN SAID UNIT CELLS TO SAID SECOND OUTLET MEANS WHEREBY SAID FLUIDS UNDERGO HEAT EXCHANGE.
Claim 2
Dependent Claim
188 words
A HEAT EXCHANGER, COMPRISING: (A) A CASING HAVING INLET MEANS AND OUTLET MEANS FOR TWO DIFFERENT FLUIDS WHICH ARE TO UNDERGO HEAT EXCHANGE IN SAID HEAT EXCHANGER; (B) A PLURALITY OF BOX SECTIONS EACH COMPRISING A FIRST ANGLE IRON FRAME, A SECOND ANGLE IRON FRAME, AND A PLURALITY OF SPACERS SECURED TO SAID FIRST AND SECOND FRAMES, SAID SPACERS ON EACH FRAME BEING PLACED ON OPPOSITE SIDES OF SAID FRAME AND IN A PAIR RELATIONSHIP, SAID BOX SECTIONS BEING POSITIONED ADJACENT EACH OTHER; (C) A PLURALITY OF UNIT GRAPHITE CELLS, SAID CELLS COMPRISING A PAIR OF THIN SLABS SEPARATED BY A PAIR OF SIDE EDGE PLATES AND A PLURALITY OF SPACERS, THE EDGE PLATES AND THE SPACERS BEING SECURED TO THE SLABS, EACH OF SAID UNIT CELLS BEING POSITIONED IN SAID BOX SECTIONS AND BEING ALIGNED AND SEPARATED BY SAID SPACERS ON SAID FRAMES, ONE OF SAID FLUIDS FLOWING FROM ONE OF SAID INLET MEANS THROUGH SAID UNIT CELLS TO SAID OUTLET MEANS, AND THE OTHER OF SAID FLUIDS FLOWING THROUGH THE SPACE BETWEEN SAID UNIT CELLS TO SAID SECOND OUTLET MEANS WHEREBY SAID FLUIDS UNDERGO HEAT EXCHANGE.
References Cited (Backward Citations)
FR580632A
Cited
FR725332A
Cited
US2887203A
Cited
US3044861A
Cited
US3055789A
Cited
US3187502A
Cited
US3183960A
Cited
US3231015A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |