US3134241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration systems with condenser by-pass means
Assignee: Carrier Corp
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Filing: 1962-10-04
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Granted: 1964-05-26
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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
2026-10-28 13:09
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: 2
Claim 1
Independent Claim
95 words
A REFRIGERATION SYSTEM COMPRISING A COMPRESSOR, A CONDENSER, EXPANSION MEANS AND AN EVAPORATOR CONNECTED IN SERIES CIRCUIT RELATIONSHIP, VALVE MEANS INTERPOSED BETWEEN SAID COMPRESSOR AND SAID CONDENSER, PUMP MEANS INTERPOSED BETWEEN SAID CONDENSER AND SAID EXPANSION MEANS, AND CONTROL MEANS OPERATIVE WHEN SAID CONDENSER PRESSURE FALLS BELOW A PREDETERMINED MINIMUM VALUE SUFFICIENT FOR PROPER OPERATION OF SAID EXPANSION MEANS FOR ACTUATING THE VALVE TO DIRECT A PORTION OF THE REFRIGERANT PASSING THERETHROUGH TO THE PUMP MEANS THEREBY ACTUATING SAID PUMP MEANS TO RAISE THE PRESSURE OF REFRIGERANT TRANSMITTED TO SAID EXPANSION MEANS FROM SAID CONDENSER
Claim 2
Dependent Claim
95 words
A REFRIGERATION SYSTEM COMPRISING A COMPRESSOR, A CONDENSER, EXPANSION MEANS AND AN EVAPORATOR CONNECTED IN SERIES CIRCUIT RELATIONSHIP, VALVE MEANS INTERPOSED BETWEEN SAID COMPRESSOR AND SAID CONDENSER, PUMP MEANS INTERPOSED BETWEEN SAID CONDENSER AND SAID EXPANSION MEANS, AND CONTROL MEANS OPERATIVE WHEN SAID CONDENSER PRESSURE FALLS BELOW A PREDETERMINED MINIMUM VALUE SUFFICIENT FOR PROPER OPERATION OF SAID EXPANSION MEANS FOR ACTUATING THE VALVE TO DIRECT A PORTION OF THE REFRIGERANT PASSING THERETHROUGH TO THE PUMP MEANS THEREBY ACTUATING SAID PUMP MEANS TO RAISE THE PRESSURE OF REFRIGERANT TRANSMITTED TO SAID EXPANSION MEANS FROM SAID CONDENSER
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |