Patent US3606282A successfully refreshed from Google Patents.
US3606282A
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US
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High temperature heat exchanger and method of operating
Assignee: ANDCO INCORPORATED A CORP OF NY
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Filing: 1970-05-06
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Granted: 1971-09-20
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Expires: 1990-05-06
Abstract
Abstract A HEAT EXCHANGER OF THE REFRACTORY TUBE TYPE IS PROVIDED WITH PRESSURE CONTROL MEANS WHEREBY THE ENTIRE HEAT EXCHANGER SYSTEM IS OPERABLE AT HIGH PRESSURES WITHOUT DETRIMENTAL EFFECTS BY MAINTAINING A LOW PREDETERMINED PRESSURE DIFFERENTIAL ACROSS THE WALLS OF THE HEAT EXCHANGER TUBES. CONTROL MEANS ARE PROVIDED TO REGULATE THE FLOW OF THE HOT GASES THROUGH THE SYSTEM AND ADJUST THE PRESSURE THEREOF IN RESPONSE TO CHANGES IN THE PRESSURE OF THE GASES OR FLUID IN OPPOSITE SIDES OF THE SYSTEM.
Inventors
- 👤 Kenneth W Stookey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:14
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/04; F28F27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |