Patent DE581086C successfully refreshed from Google Patents.
US3205940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Serpentine tube heat exchanger assembly
Assignee: Individual
•
Filing: 1963-03-21
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Granted: 1965-09-14
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Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 Vernon J Carns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:31
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/05316; F28D1/05341; F24; F24H; F24H1/00; F24H1/10; F24H1/12; F24H1/14; F24H1/145; F28F; F28F9/00; F28F9/02; F28F9/0219; F28F9/0224; F28F9/26; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/507
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A HEAT EXCHANGER, THE COMBINATION OF; A PAIR OF SPACED HEADERS; A PLURALITY OF HEAT EXCHANGE TUBES HAVING OPPOSITE OPEN ENDS INTERCONNECTING SAID HEADERS; EACH OF SAID HEADERS HAVING A HEADER RECESS WHICH COMMUNICATED WITH ALL OF SAID OPEN ENDS OF SAID HEAT EXCHANGE TUBES; EACH OF SAID RECESSES HAVING AN OPEN SIDE SPACED FROM SAID OPEN ENDS; A WALL OF EACH HEADER DISPOSED AT AN INNER PORTION OF EACH HEADER RECESS, EACH WALL HAVING A PLURALITY OF OPENINGS EXTENDING THERETHROUGH; SAID OPPOSITE OPEN ENDS OF SAID TUBES COMMUNICATING THROUGH SAID OPENING IN SAID WALLS, AND END PLATES EACH HAVING A PROJECTION EXTENDING INTO ONE OF SAID RE CESSES, EACH PROJECTION HAVING A CURVE CONCAVE RETURN BEND COMMUNICATING RECESS SPANNING A PAIR OF ADJACENT OPEN ENDS OF SAID TUBES AND FORMING A CONTINUITY OF PASSAGE STRUCTURE EXTENDING THROUGH APPROXIMATELY A 180DEGREE TURN FROM ON OPEN END OF ONE HEAT EXCHANGE TUBE TO ANOTHER OPEN END OF AN ADJACENT HEAT EXCHANGE TUBE.
Claim 2
Dependent Claim
162 words
IN A HEAT EXCHANGER, THE COMBINATION OF; A PAIR OF SPACED HEADERS; A PLURALITY OF HEAT EXCHANGE TUBES HAVING OPPOSITE OPEN ENDS INTERCONNECTING SAID HEADERS; EACH OF SAID HEADERS HAVING A HEADER RECESS WHICH COMMUNICATED WITH ALL OF SAID OPEN ENDS OF SAID HEAT EXCHANGE TUBES; EACH OF SAID RECESSES HAVING AN OPEN SIDE SPACED FROM SAID OPEN ENDS; A WALL OF EACH HEADER DISPOSED AT AN INNER PORTION OF EACH HEADER RECESS, EACH WALL HAVING A PLURALITY OF OPENINGS EXTENDING THERETHROUGH; SAID OPPOSITE OPEN ENDS OF SAID TUBES COMMUNICATING THROUGH SAID OPENING IN SAID WALLS, AND END PLATES EACH HAVING A PROJECTION EXTENDING INTO ONE OF SAID RE CESSES, EACH PROJECTION HAVING A CURVE CONCAVE RETURN BEND COMMUNICATING RECESS SPANNING A PAIR OF ADJACENT OPEN ENDS OF SAID TUBES AND FORMING A CONTINUITY OF PASSAGE STRUCTURE EXTENDING THROUGH APPROXIMATELY A 180DEGREE TURN FROM ON OPEN END OF ONE HEAT EXCHANGE TUBE TO ANOTHER OPEN END OF AN ADJACENT HEAT EXCHANGE TUBE.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |