Patent US3333630A successfully refreshed from Google Patents.
US3333630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniformly spaced tube banks
Assignee: Babcock International Ltd
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Filing: 1965-05-20
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Granted: 1967-08-01
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Expires: 1985-05-20
Abstract
No abstract record available.
Inventors
- 👤 Anthreas N Charcharos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:16
CPC Classifications
F; F22; F22B; F22B1/00; F22B1/02; F22B1/06; F22B1/063; F28; F28D; F28D7/00; F28D7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A HEAT EXCHANGER COMPRISING: (A) A VERTICALLY ELONGATED PRESSURE VESSEL, (B) VERTICALLY EXTENDING BAFFLE MEANS DIVIDING SAID PRESSURE VESSEL INTO AN INNER ANNULAR SPACE AND AN OUTER ANNULAR SPACE, (C) TUBE SHEET MEANS HAVING A PLURALITY OF TUBE OPENING THERETHROUGH DISPOSED WITHIN SAID VESSEL, (D) HEAT EXCHANGER MEANS COMPRISING AN ANNULAR SHAPED BANK OF U-TUBES, EACH TUBE OF SAID BANK COMPRISING A FIRST LEG LOCATED IN SAID INNER ANNULAR SPACE AND A SECOND LEG LOCATED IN SAID INNER ANNULAR SPACE JOINED BY A U-BEND AT THE ENDS OF SAID LEGS OPPOSITE SAID TUBE SHEET MEANS, WITH THE OTHER ENDS OF SAID LEGS DISPOSED WITHIN THE TUBE OPENINGS IN SAID TUBE SHEET MEANS,
Claim 2
Dependent Claim
112 words
A HEAT EXCHANGER COMPRISING: (A) A VERTICALLY ELONGATED PRESSURE VESSEL, (B) VERTICALLY EXTENDING BAFFLE MEANS DIVIDING SAID PRESSURE VESSEL INTO AN INNER ANNULAR SPACE AND AN OUTER ANNULAR SPACE, (C) TUBE SHEET MEANS HAVING A PLURALITY OF TUBE OPENING THERETHROUGH DISPOSED WITHIN SAID VESSEL, (D) HEAT EXCHANGER MEANS COMPRISING AN ANNULAR SHAPED BANK OF U-TUBES, EACH TUBE OF SAID BANK COMPRISING A FIRST LEG LOCATED IN SAID INNER ANNULAR SPACE AND A SECOND LEG LOCATED IN SAID INNER ANNULAR SPACE JOINED BY A U-BEND AT THE ENDS OF SAID LEGS OPPOSITE SAID TUBE SHEET MEANS, WITH THE OTHER ENDS OF SAID LEGS DISPOSED WITHIN THE TUBE OPENINGS IN SAID TUBE SHEET MEANS,
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |