US3214932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid transfer system
Assignee: Copeland Industrial LP
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Filing: 1963-12-03
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Granted: 1965-11-02
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Expires: 1983-12-03
Abstract
No abstract record available.
Inventors
- 👤 Whitney I Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:44
CPC Classifications
F; F25; F25B; F25B41/00; F25B2400/00; F25B2400/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A REFRIGERATING SYSTEM HAVING A COMPRESSOR, A CONDENSER COMMUNICATING WITH THE HIGH PRESSURE SIDE OF SAID COMPRESSOR, A RECEIVER COMMUNICATING WITH SAID CONDENSER, AN EVAPORATOR COMMUNICATING WITH SAID RECEIVER, AND A SUCTION TRAP COMMUNICATING WITH SAID EVAPORATOR AND HAVING A CONDUIT COMMUNICATING WITH THE LOW PRESSURE SIDE OF THE COMPRESSOR FOR RETURNING GASEOUS REFRIGERANT THERETO; A TRANSFER DRUM INTERPOSED BETWEEN AND COMMUNICATING WITH SAID SUCTION TRAP AND RECEIVER FOR TRANSFERRING LIQUID REFRIGERANT FROM SAID SUCTION TRAP TO SAID RECEIVER, MEANS RESPONSIVE TO THE LIQUID LEVEL IN SAID
Claim 2
Dependent Claim
88 words
IN A REFRIGERATING SYSTEM HAVING A COMPRESSOR, A CONDENSER COMMUNICATING WITH THE HIGH PRESSURE SIDE OF SAID COMPRESSOR, A RECEIVER COMMUNICATING WITH SAID CONDENSER, AN EVAPORATOR COMMUNICATING WITH SAID RECEIVER, AND A SUCTION TRAP COMMUNICATING WITH SAID EVAPORATOR AND HAVING A CONDUIT COMMUNICATING WITH THE LOW PRESSURE SIDE OF THE COMPRESSOR FOR RETURNING GASEOUS REFRIGERANT THERETO; A TRANSFER DRUM INTERPOSED BETWEEN AND COMMUNICATING WITH SAID SUCTION TRAP AND RECEIVER FOR TRANSFERRING LIQUID REFRIGERANT FROM SAID SUCTION TRAP TO SAID RECEIVER, MEANS RESPONSIVE TO THE LIQUID LEVEL IN SAID
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 |