Patent US3552142A successfully refreshed from Google Patents.
US3552142A
Expired / Lapsed
US
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Absorption refrigeration system with multiple absorption stages
Assignee: Individual
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Filing: 1969-01-16
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Granted: 1971-01-05
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Expires: 1989-01-16
Abstract
Abstract THIS REFIRGERATION SYSTEM INCLUDES A FIRST ABSORBER, AN EVAPORATION HEAT EXCHANGER, A SECOND ABSORBER FOR DRAWING REFRIGERANT VAPOR FROM THE EVAPORATION HEAT EXCHANGER AND ABSORBING THE REFRIGERANT VAPOR IN AN ABSORBENT TO THEREBY ENRICH THE REFIRGERANT IN THE ABSORBENT PASSING SUCCESSIVELY THROUGH THE FIRST ABSORBE, THE EVAPORATION HEAT EXCHANGER, AND THE SECOND ABSORBER SO THAT THE BOILING POINT OF THE ENRICHED SOLUTION IS SO LOWERED THAT BOILING OF THE ENRICHED SOLUTION CAN BE INITIATED WITHIN A HEAT EXCHANGE CONDIUT ASSOCIATED WITH THE FIRST ABSORBER THEREBY INCREASING THE C.O.P. AND MAKING EH GENERATOR MORE EFFECTIVE IN SEPARATING REFRIGERANT FROM ENRICHED SOLUTION.
Inventors
- 👤 Ralph C Schlichtig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:18
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/008; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |