Patent US2440894A successfully refreshed from Google Patents.
US3133426A
Expired / Lapsed
US
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Refrigeration apparatus for operation under low head pressures
Assignee: Carrier Corp
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Filing: 1962-10-04
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Granted: 1964-05-19
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Expires: 1982-10-04
Abstract
No abstract record available.
Inventors
- 👤 Robert W Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:04
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/027; F25B2341/00; F25B2341/001; F25B2341/0014; Y; Y10; Y10S; Y10S62/00; Y10S62/17
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A REFRIGERATION SYSTEM COMPRISING A COMPRESSOR, A CONDENSER, EXPANSION MEANS, AND AN EVAPORATOR CONNECTED IN SERIES CIRCUIT RELATIONSHIP, AN EJECTOR HAVING AN INLET, AN OUTLET, AND A NOZZLE, FIRST CONDUIT MEANS FOR EFFECTING COMMUNICATION BETWEEN AN OUTLET PORTION OF SAID CONDENSER AND SAID INLET OF SAID EJECTOR, MEANS FOR EFFECTING COMMUNICATION BETWEEN THE OUTLET OF THE EJECTOR AND THE EXPANSION MEANS, AND SECOND CONDUIT MEANS FOR EFFECTING COMMUNICATION BETWEEN SAID COMPRESSOR OUTLET AND SAID NOZZLE OF SAID EJECTOR WHEREBY THE FLOW OF REFRIGERANT FROM SAID COMPRESSOR THROUGH SAID NOZZLE CAUSES SAID EJECTOR TO INDUCE REFRIGERANT FROM SAID CONDENSER.
References Cited (Backward Citations)
US2986899A
Cited
US2954681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |