US3276221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system
Assignee: Individual
•
Filing: 1965-02-05
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Granted: 1966-10-04
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Expires: 1985-02-05
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Crumley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:13
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/025; F25B31/00; F25B31/006; F25B41/00; F25B41/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
IN A REFRIGERATION SYSTEM HAVING COMPONENTS INCLUDING A HERMETIC TYPE COMPRESSOR HAVING A SUCTION SIDE AND A DISCHARGE SIDE, A MOTOR FOR DRIVING SAID COMPRESSOR POSITIONED ABOVE SAID COMPRESSOR IN VERTICALLY DISPOSED RELATIONSHIP, A COMMON SEALED ENCLOSURE FOR SAID COMPRESSOR AND MOTOR, A CONDENSER, A RECEIVER, AN EXPANSION VALVE, AN EVAPORATOR, CONDUITS INTERCONNECTING SAID COMPONENTS SERIALLY IN A CLOSED SYSTEM, A REFRIGERANT IN SAID CLOSED SYSTEM AND WHEREIN THE REFRIGERANT FROM SAID EVAPORATOR IMPINGES ON SAID MOTOR IN HEAT TRANSFER RELATIONSHIP THEREWITH PRIOR TO ENTERING SAID COMPRESSOR, THE IMPROVEMENT OF A SECONDARY CONDUIT DIRECTLY COMMUNICATING SAID RECEIVER WITH THE SUCTION SIDE OF SAID COMPRESSOR FOR CONDUCTING LIQUID REFRIGERANT FROM SAID RECEIVER TO SAID COMPRESSOR SUCTION SIDE TO SUPPLEMENT THE COOLING ACTION OF THE GASEOUS REFRIGERANT FROM SAID EVAPORATOR ON SAID COMPRESSOR MOTOR, MEANS RESPONSIVE TO THE OPERATION OF SAID COMPRESSOR FOR REGULATING THE FLOW OF SAID REFRIGERANT IN SAID SECONDARY CONDUIT TO MAINTAIN THE OPERATING TEMPERATURE OF SAID MOTOR WITHIN A PREDETERMINED MAXIMUM.
Claim 2
Dependent Claim
163 words
IN A REFRIGERATION SYSTEM HAVING COMPONENTS INCLUDING A HERMETIC TYPE COMPRESSOR HAVING A SUCTION SIDE AND A DISCHARGE SIDE, A MOTOR FOR DRIVING SAID COMPRESSOR POSITIONED ABOVE SAID COMPRESSOR IN VERTICALLY DISPOSED RELATIONSHIP, A COMMON SEALED ENCLOSURE FOR SAID COMPRESSOR AND MOTOR, A CONDENSER, A RECEIVER, AN EXPANSION VALVE, AN EVAPORATOR, CONDUITS INTERCONNECTING SAID COMPONENTS SERIALLY IN A CLOSED SYSTEM, A REFRIGERANT IN SAID CLOSED SYSTEM AND WHEREIN THE REFRIGERANT FROM SAID EVAPORATOR IMPINGES ON SAID MOTOR IN HEAT TRANSFER RELATIONSHIP THEREWITH PRIOR TO ENTERING SAID COMPRESSOR, THE IMPROVEMENT OF A SECONDARY CONDUIT DIRECTLY COMMUNICATING SAID RECEIVER WITH THE SUCTION SIDE OF SAID COMPRESSOR FOR CONDUCTING LIQUID REFRIGERANT FROM SAID RECEIVER TO SAID COMPRESSOR SUCTION SIDE TO SUPPLEMENT THE COOLING ACTION OF THE GASEOUS REFRIGERANT FROM SAID EVAPORATOR ON SAID COMPRESSOR MOTOR, MEANS RESPONSIVE TO THE OPERATION OF SAID COMPRESSOR FOR REGULATING THE FLOW OF SAID REFRIGERANT IN SAID SECONDARY CONDUIT TO MAINTAIN THE OPERATING TEMPERATURE OF SAID MOTOR WITHIN A PREDETERMINED MAXIMUM.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |