US3289742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooled surface condenser and method of operating the same
Assignee: Individual
•
Filing: 1966-02-04
•
Granted: 1966-12-06
•
Expires: 1986-02-04
Abstract
No abstract record available.
Inventors
- 👤 Niemann Johann Christoph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:58
CPC Classifications
F; F28; F28B; F28B11/00; F28B1/00; F28B1/06; F28B2001/065
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A METHOD OF OPERATING AN AIR-COOLED SURFACE CONDENSER HAVING A PLURALITY OF GROUPS OF HEAT EXCHANGE ELEMENTS INCLUDING CONDENSER ELEMENTS, DEPHLEGMATOR ELEMENTS AND AN AFTER-COOLING ELEMENT FOR ONE OF THE GROUPS, COMPRISING THE STEPS OF BLOWING AIR BY MEANS FOR AN AIR BLOWER FOR EACH GROUP OVER THE ELEMENTS OF EACH GROUP; AND REGULATING THE AIR BLOWER MEANS FOR SAID ONE SUCH A MANNER THAT THE AIR BLOWER MEANS FOR SAID ONE GROUP ALWAYS DELIVERS AN EQUAL OR A GREATER QUANTITY OF AIR THAN THE OTHER AIR BLOWER MEANS AND IS SWITCHED ON FIRST AND SWITCHED OFF LAST.
References Cited (Backward Citations)
US3073575A
Cited
US3175960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |