US3142969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration control system
Assignee: Phillips Petroleum Co
•
Filing: 1962-11-13
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Granted: 1964-08-04
•
Expires: 1982-11-13
Abstract
No abstract record available.
Inventors
- 👤 Frederick L Stoller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:48
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/004; B01D9/0063
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A METHOD FOR CONTROLLING THE COOLING POWER OF A REFRIGERANT WHICH IS UTILIZED TO COOL A FLUID WHICH IS PASSED IN INDIRECT HEAT EXCHANGE WITH AT LEAST A PORTION OF THE LIQUID REFRIGERANT IN A REFRIGERANT ZONE, COMPRISING WITHDRAWING REFRIGERANT VAPOR FROM SAID REFRIGERANT ZONE, COMPRESSING THE THUS WITHDRAWN REFRIGERANT VAPOR, CONDENSING A FIRST PORTION OF THE THUS COMPRESSED REFRIGERANT VAPOR INTO SAID REFRIGERANT ZONE RESPONSIVE TO THE LEVEL OF LIQUID REFRIGERANT IN SAID REFRIGERANT ZONE TO MAINTAIN SAID LEVEL SUBSTANTIALLY CONSTANT, INTRODUCING A SECOND PORTION OF SAID COMPRESSED REFRIGERANT VAPOR INTO SAID REFRIGERANT ZONE, AND CONTROLLING THE RATE OF WITHDRAWAL OF REFRIGERANT VAPOR FROM SAID REFRIGERANT ZONE AND THE RATE OF INTRODUCTION OF SAID SECOND PORTION OF COMPRESSED REFRIGERANT VAPOR INTO SAID REFRIGERANT ZONE IN AN OPPOSITE MANNER RESPONSIVE TO THE PRESSURE IN SAID REFRIGERANT ZONE.
Claim 2
Independent Claim
137 words
A METHOD FOR CONTROLLING THE COOLING POWER OF A REFRIGERANT WHICH IS UTILIZED TO COOL A FLUID WHICH IS PASSED IN INDIRECT HEAT EXCHANGE WITH AT LEAST A PORTION OF THE LIQUID REFRIGERANT IN A REFRIGERANT ZONE, COMPRISING WITHDRAWING REFRIGERANT VAPOR FROM SAID REFRIGERANT ZONE, COMPRESSING THE THUS WITHDRAWN REFRIGERANT VAPOR, CONDENSING A FIRST PORTION OF THE THUS COMPRESSED REFRIGERANT VAPOR INTO SAID REFRIGERANT ZONE RESPONSIVE TO THE LEVEL OF LIQUID REFRIGERANT IN SAID REFRIGERANT ZONE TO MAINTAIN SAID LEVEL SUBSTANTIALLY CONSTANT, INTRODUCING A SECOND PORTION OF SAID COMPRESSED REFRIGERANT VAPOR INTO SAID REFRIGERANT ZONE, AND CONTROLLING THE RATE OF WITHDRAWAL OF REFRIGERANT VAPOR FROM SAID REFRIGERANT ZONE AND THE RATE OF INTRODUCTION OF SAID SECOND PORTION OF COMPRESSED REFRIGERANT VAPOR INTO SAID REFRIGERANT ZONE IN AN OPPOSITE MANNER RESPONSIVE TO THE PRESSURE IN SAID REFRIGERANT ZONE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |