US3214929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration unit having superheated gas feedback
Assignee: Individual
•
Filing: 1962-10-29
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Granted: 1965-11-02
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Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 Robert V Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:25
CPC Classifications
F; F25; F25B; F25B1/00; F25B2400/00; F25B2400/13; F25B2700/00; F25B2700/21; F25B2700/2115; F25B2700/21151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
A PROCESS OF COOLING IN A CONTINUOUS CYCLE WHICH COMPRISES THE STEPS OF; EXERTING SUFFICIENT PRESSURE ON A SUPERHEATED REFRIGERANT TO CAUSE IT TO LIQUEFY WHEN COOLED; LOWERING THE TEMPERATURE OF THE PRESSURIZED REFRIGERANT SUFFICIENTLY TO LIQUEFY THE SAME; RESTRICTING AND THEREUPON DECREASING THE PRESSURE OF ALL OF THE LIQUEFIED REFRIGERANT; DIRECTING A FIRST PORTION OF THE DECREASED PRESSURE REFRIGERANT INTO HEAT EXCHANGE RELATIONSHIP WITH A SUBSTANCE TO BE COOLED; DIRECTING A SECOND PORTION OF THE DECREASED PRESSURE REFRIGERANT INTO HEAT EXCHANGE RELATIONSHIP WITH ALL OF THE LIQUEFIED REFRIGERANT WHILE THE FLOW THEREOF IS RESTRICTED AND BEFORE THE PRESSURE THEREOF IS DECREASED AND PRIOR TO AGAIN PRESSURIZING SAID SECOND PORTION IN CONTINUATION OF THE CYCLE; AND PRODUCING A SECOND PRESSURE DROP IN SAID FIRST PORTION OF SAID REFRIGERANT AFTER SAID RESTRICTION THEREOF AND PRIOR TO AGAIN PRESSURIZING THE SAME IN CONTINUATION OF THE CYCLE, WITH SECOND PRESSURE DROP BEING PRODUCED AFTER THE REFRIGERANT ENTERS INTO HEATED EXCHANGE RELATIONSHIP WITH SAID SUBSTANCE TO BE COOLED.
Claim 2
Dependent Claim
164 words
A PROCESS OF COOLING IN A CONTINUOUS CYCLE WHICH COMPRISES THE STEPS OF; EXERTING SUFFICIENT PRESSURE ON A SUPERHEATED REFRIGERANT TO CAUSE IT TO LIQUEFY WHEN COOLED; LOWERING THE TEMPERATURE OF THE PRESSURIZED REFRIGERANT SUFFICIENTLY TO LIQUEFY THE SAME; RESTRICTING AND THEREUPON DECREASING THE PRESSURE OF ALL OF THE LIQUEFIED REFRIGERANT; DIRECTING A FIRST PORTION OF THE DECREASED PRESSURE REFRIGERANT INTO HEAT EXCHANGE RELATIONSHIP WITH A SUBSTANCE TO BE COOLED; DIRECTING A SECOND PORTION OF THE DECREASED PRESSURE REFRIGERANT INTO HEAT EXCHANGE RELATIONSHIP WITH ALL OF THE LIQUEFIED REFRIGERANT WHILE THE FLOW THEREOF IS RESTRICTED AND BEFORE THE PRESSURE THEREOF IS DECREASED AND PRIOR TO AGAIN PRESSURIZING SAID SECOND PORTION IN CONTINUATION OF THE CYCLE; AND PRODUCING A SECOND PRESSURE DROP IN SAID FIRST PORTION OF SAID REFRIGERANT AFTER SAID RESTRICTION THEREOF AND PRIOR TO AGAIN PRESSURIZING THE SAME IN CONTINUATION OF THE CYCLE, WITH SECOND PRESSURE DROP BEING PRODUCED AFTER THE REFRIGERANT ENTERS INTO HEATED EXCHANGE RELATIONSHIP WITH SAID SUBSTANCE TO BE COOLED.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |