US3092978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporator coolers
Assignee: Individual
•
Filing: 1960-12-02
•
Granted: 1963-06-11
•
Expires: 1980-12-02
Abstract
No abstract record available.
Inventors
- 👤 Lorentzen Joergen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:47
CPC Classifications
F; F25; F25B; F25B39/00; F25B39/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
EVAPORATOR COOLER, COMPRISING AN OUTER SUBSTANTIALLY CYLINDRICAL COOLING WALL FORMING A DRUM AND HAVING A VERTICAL AXIS, AN INNER WALL AT A DISTANCE FROM THE INNERSIDE OF SAID OUTER COOLING WALL SO THAT SAID WALLS DEFINE BETWEEN THEM A SUBSTANTIALLY NARROW ANNULAR CHAMBER, A BOTTOM WALL FOR SAID DRUM, A TOP WALL FOR SAID DRUM, CONDUIT MEANS INTERNALLY DISPOSED OF SAID DRUM FOR CONDUCTING A FLUID EVAPORABLE COOLING MEDIUM TO THE LOWER PORTION OF SAID ANNULAR CHAMBER, SAID INNER WALL HAVING ITS UPPER EDGE SITUATE AT A DISTANCE FROM THE INNERSIDE OF THE TOP WALL SO AS TO DEFINE AN APERTURE COMMUNICATING WITH THE ANNULAR CHAMBER AND EXTENDING RADIALLY INWARDS, AN INTERMEDIATE WALL FORMING A SUBSTANTIALLY CLOSED CENTRAL CHAMBER WITH SAID TOP WALL WHICH COMMUNICATES THROUGH SAID APERTURE WITH SAID ANNULAR CHAMBER, CONDUIT MEANS EXTENDING FROM THE BOTTOM OF SAID CENTRAL CHAMBER TO THE LOWER PORTION OF THE ANNULAR CHAMBER AND FURTHER CONDUIT MEANS FOR CONDUCTING COOLING MEDIUM VAPOR AWAY FROM SAID CENTRAL CHAMBER.
Claim 2
Dependent Claim
164 words
EVAPORATOR COOLER, COMPRISING AN OUTER SUBSTANTIALLY CYLINDRICAL COOLING WALL FORMING A DRUM AND HAVING A VERTICAL AXIS, AN INNER WALL AT A DISTANCE FROM THE INNERSIDE OF SAID OUTER COOLING WALL SO THAT SAID WALLS DEFINE BETWEEN THEM A SUBSTANTIALLY NARROW ANNULAR CHAMBER, A BOTTOM WALL FOR SAID DRUM, A TOP WALL FOR SAID DRUM, CONDUIT MEANS INTERNALLY DISPOSED OF SAID DRUM FOR CONDUCTING A FLUID EVAPORABLE COOLING MEDIUM TO THE LOWER PORTION OF SAID ANNULAR CHAMBER, SAID INNER WALL HAVING ITS UPPER EDGE SITUATE AT A DISTANCE FROM THE INNERSIDE OF THE TOP WALL SO AS TO DEFINE AN APERTURE COMMUNICATING WITH THE ANNULAR CHAMBER AND EXTENDING RADIALLY INWARDS, AN INTERMEDIATE WALL FORMING A SUBSTANTIALLY CLOSED CENTRAL CHAMBER WITH SAID TOP WALL WHICH COMMUNICATES THROUGH SAID APERTURE WITH SAID ANNULAR CHAMBER, CONDUIT MEANS EXTENDING FROM THE BOTTOM OF SAID CENTRAL CHAMBER TO THE LOWER PORTION OF THE ANNULAR CHAMBER AND FURTHER CONDUIT MEANS FOR CONDUCTING COOLING MEDIUM VAPOR AWAY FROM SAID CENTRAL CHAMBER.
References Cited (Backward Citations)
US2735275A
Cited
US2812644A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |