US3230729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purging apparatus for refrigeration system
Assignee: Trane Co
•
Filing: 1964-09-29
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Granted: 1966-01-25
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Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 David H Eber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:24
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/04; F25B43/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN COMBINATION WITH A CLOSED CIRCUIT REFRIGERATION SYSTEM HAVING A COMPRESSOR, CONDENSER, PRESSURE REDUCING VALVE AND EVAPORATOR INTERCONNECTED IN REFRIGERANT FLOW RELATIONSHIP, SAID VALVE BEING LOCATED BETWEEN THE CONDENSER AND EVAPORATOR SO AS TO FORM WITHIN SAID SYSTEM A HIGH PRESSURE SIDE INCLUDING THE COMPRESSOR DISCHARGE LINE, SAID CONDENSER AND THE INLET OF SAID VALVE AND A LOW PRESSURE SIDE INCLUDING THE OUTLET OF SAID VALVE, SAID EVAPORATOR AND THE COMPRESSOR SUCTION LINE; A PURGE PUMP FOR REMOVING NONCONDENSABLE GASES FROM SAID SYSTEM, SAID
Claim 2
Dependent Claim
84 words
IN COMBINATION WITH A CLOSED CIRCUIT REFRIGERATION SYSTEM HAVING A COMPRESSOR, CONDENSER, PRESSURE REDUCING VALVE AND EVAPORATOR INTERCONNECTED IN REFRIGERANT FLOW RELATIONSHIP, SAID VALVE BEING LOCATED BETWEEN THE CONDENSER AND EVAPORATOR SO AS TO FORM WITHIN SAID SYSTEM A HIGH PRESSURE SIDE INCLUDING THE COMPRESSOR DISCHARGE LINE, SAID CONDENSER AND THE INLET OF SAID VALVE AND A LOW PRESSURE SIDE INCLUDING THE OUTLET OF SAID VALVE, SAID EVAPORATOR AND THE COMPRESSOR SUCTION LINE; A PURGE PUMP FOR REMOVING NONCONDENSABLE GASES FROM SAID SYSTEM, SAID
References Cited (Backward Citations)
US2986898A
Cited
US3013404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |