US3184926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system
Assignee: Hussmann Corp
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Filing: 1963-10-10
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Granted: 1965-05-25
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Expires: 1983-10-10
Abstract
No abstract record available.
Inventors
- 👤 Julian H Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:48
CPC Classifications
F; F25; F25B; F25B40/00; F25B40/02; F25B1/00; F25B1/10; F25B47/00; F25B47/02; F25B47/022; F25B5/00; F25B5/02; F25B2400/00; F25B2400/13; F25B2400/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A REFRIGERATION SYSTEM, COMPRISING A LIQUID REFRIGERANT SUPPLY LINE, A COMPRESSOR SUCTION LINE, A PLURALITY OF LOW TEMPERATURE EVAPORATORS CONNECTED IN PARALLEL BETWEEN SAID LIQUID REFRIGERANT SUPPLY AND THE COMPRESSOR SUCTION LINE, A LOW STAGE COMPRESSOR IN POSITION TO RECEIVE GAS FROM THE COMPRESSOR SUCTION LINE, A HIGH STAGE COMPRESSOR, A CONNECTING LINE BETWEEN THE LOW STAGE COMPRESSOR AND THE HIGH STAGE COMPRESSOR, A HIGH TEMPERATURE SUCTION LINE CONNECTED TO SAID CONNECTING LINE, A HIGH TEMPERATURE COIL BETWEEN SAID HIGH TEMPERATURE SUCTION LINE AND SAID LIQUID REFRIGERANT SUPPLY LINE, MEANS FOR SIMULTANEOUSLY SHUTTING OFF THE HIGH STAGE COMPRESSOR AND THE SUPPLY TO THE LIQUID REFRIGERANT SUPPLY LINE DURING A TIMED PERIOD WHEN THE LOW TEMPERATURE EVAPORATORS ARE MAINTAINED IN REFRIGERATION CONDITION WHEREBY THE LOW STAGE COMPRESSOR WILL SUPPLY HOT GASEOUS REFRIGERANT IN REVERSE FLOW THROUGH THE HIGH TEMPERATURE COILS TO DEFROST THE COILS AND LIQUEFY THE GAS WHICH THEN ENTERS THE LIQUID REFRIGERANT SUPPLY LINE TO SUPPLY LIQUID REFRIGERANT TO THE LOW TEMPERATURE EVAPORATORS AND BACK TO THE LOW STAGE COMPRESSOR TO COMPLETE THE CYCLE.
Claim 2
Dependent Claim
175 words
A REFRIGERATION SYSTEM, COMPRISING A LIQUID REFRIGERANT SUPPLY LINE, A COMPRESSOR SUCTION LINE, A PLURALITY OF LOW TEMPERATURE EVAPORATORS CONNECTED IN PARALLEL BETWEEN SAID LIQUID REFRIGERANT SUPPLY AND THE COMPRESSOR SUCTION LINE, A LOW STAGE COMPRESSOR IN POSITION TO RECEIVE GAS FROM THE COMPRESSOR SUCTION LINE, A HIGH STAGE COMPRESSOR, A CONNECTING LINE BETWEEN THE LOW STAGE COMPRESSOR AND THE HIGH STAGE COMPRESSOR, A HIGH TEMPERATURE SUCTION LINE CONNECTED TO SAID CONNECTING LINE, A HIGH TEMPERATURE COIL BETWEEN SAID HIGH TEMPERATURE SUCTION LINE AND SAID LIQUID REFRIGERANT SUPPLY LINE, MEANS FOR SIMULTANEOUSLY SHUTTING OFF THE HIGH STAGE COMPRESSOR AND THE SUPPLY TO THE LIQUID REFRIGERANT SUPPLY LINE DURING A TIMED PERIOD WHEN THE LOW TEMPERATURE EVAPORATORS ARE MAINTAINED IN REFRIGERATION CONDITION WHEREBY THE LOW STAGE COMPRESSOR WILL SUPPLY HOT GASEOUS REFRIGERANT IN REVERSE FLOW THROUGH THE HIGH TEMPERATURE COILS TO DEFROST THE COILS AND LIQUEFY THE GAS WHICH THEN ENTERS THE LIQUID REFRIGERANT SUPPLY LINE TO SUPPLY LIQUID REFRIGERANT TO THE LOW TEMPERATURE EVAPORATORS AND BACK TO THE LOW STAGE COMPRESSOR TO COMPLETE THE CYCLE.
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) | 1968-05-24 | 1968-11-23 | 1969-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-24 | 1972-11-23 | 1973-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-24 | 1976-11-23 | 1977-05-25 | $7700.00 | Window Closed / Lapsed |