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US3371500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system starting
Assignee: Trane US Inc
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Filing: 1966-05-13
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Granted: 1968-03-05
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Expires: 1986-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Roy F Marcus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:27
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/022; F25B41/00; F25B41/20; F25B41/24; F25B2400/00; F25B2400/04; F25B2400/0403; F25B2400/0411; F25B2500/00; F25B2500/26; F25B2600/00; F25B2600/25; F25B2600/2503
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
IN A REFRIGERATION SYSTEM HAVING A CLOSED REFRIGERANT CIRCUIT INCLUDING A COMPRESSOR MEANS, CONDENSER MEANS, RECEIVER MEANS, THROTTLING MEANS, AND EVAPORATOR MEANS CONNECTED RESPECTIVELY IN SERIES AND MEANS FOR DISCONTINUING OPERATION OF SAID COMPRESSOR MEANS IN RESPONSE TO A PREDETERMINED MINIMUM PRESSURE IN A PORTION OF THE REFRIGERANT CIRCUIT, THE METHOD OF STARTING SAID COMPRESSOR MEANS WHEN THE PRESSURE IN THE CONDENSER MEANS IS INSUFFICIENT TO RAISE THE PRESSURE IN SAID PORTION OF SAID REFRIGERANT CIRCUIT TO SAID PREDETERMINED MINIMUM PRESSURE INCLUDING THE STEPS OF: INTERRUPTING FLUID COMMUNICATION BETWEEN SAID CONDENSER MEANS AND RECEIVER MEANS; PASSING REFRIGERANT GAS FROM SAID EVAPORATOR MEANS TO SAID RECEIVER MEANS VIA A ROUTE BYPASSING SAID COMPRESSOR MEANS AND CONDENSER MEANS; PASSING LIQUID REFRIGERANT IN SAID RECEIVER MEANS TO SAID EVAPORATOR MEANS BY GRAVITY FLOW; VAPORIZING SAID LIQUID REFRIGERANT IN SAID EVAPORATOR MEANS FOR PASSAGE BACK TO SAID RECEIVER MEANS AND FOR RAISING THE PRESSURE IN SAID PORTION OF SAID CIRCUIT TO SAID PREDETERMINED MINIMUM PRESSURE; ACTIVATING SAID COMPRESSOR MEANS IN RESPONSE TO SAID RISE IN PRESSURE IN SAID PORTION OF SAID REFRIGERANT CIRCUIT TO SAID PREDETERMINED MINIMUM PRESSURE; AND TERMINATING SAID INTERRUPTING STEP.
Claim 2
Dependent Claim
189 words
IN A REFRIGERATION SYSTEM HAVING A CLOSED REFRIGERANT CIRCUIT INCLUDING A COMPRESSOR MEANS, CONDENSER MEANS, RECEIVER MEANS, THROTTLING MEANS, AND EVAPORATOR MEANS CONNECTED RESPECTIVELY IN SERIES AND MEANS FOR DISCONTINUING OPERATION OF SAID COMPRESSOR MEANS IN RESPONSE TO A PREDETERMINED MINIMUM PRESSURE IN A PORTION OF THE REFRIGERANT CIRCUIT, THE METHOD OF STARTING SAID COMPRESSOR MEANS WHEN THE PRESSURE IN THE CONDENSER MEANS IS INSUFFICIENT TO RAISE THE PRESSURE IN SAID PORTION OF SAID REFRIGERANT CIRCUIT TO SAID PREDETERMINED MINIMUM PRESSURE INCLUDING THE STEPS OF: INTERRUPTING FLUID COMMUNICATION BETWEEN SAID CONDENSER MEANS AND RECEIVER MEANS; PASSING REFRIGERANT GAS FROM SAID EVAPORATOR MEANS TO SAID RECEIVER MEANS VIA A ROUTE BYPASSING SAID COMPRESSOR MEANS AND CONDENSER MEANS; PASSING LIQUID REFRIGERANT IN SAID RECEIVER MEANS TO SAID EVAPORATOR MEANS BY GRAVITY FLOW; VAPORIZING SAID LIQUID REFRIGERANT IN SAID EVAPORATOR MEANS FOR PASSAGE BACK TO SAID RECEIVER MEANS AND FOR RAISING THE PRESSURE IN SAID PORTION OF SAID CIRCUIT TO SAID PREDETERMINED MINIMUM PRESSURE; ACTIVATING SAID COMPRESSOR MEANS IN RESPONSE TO SAID RISE IN PRESSURE IN SAID PORTION OF SAID REFRIGERANT CIRCUIT TO SAID PREDETERMINED MINIMUM PRESSURE; AND TERMINATING SAID INTERRUPTING STEP.
References Cited (Backward Citations)
US2978877A
Cited
US3248895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |