US3274796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system with lube oil separation means
Assignee: Copeland Industrial LP
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Filing: 1965-09-23
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Granted: 1966-09-27
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Expires: 1985-09-23
Abstract
No abstract record available.
Inventors
- 👤 Erich J Kocher
- 👤 Joseph N Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:42
CPC Classifications
F; F25; F25B; F25B43/00; F25B43/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A REFRIGERATION SYSTEM INCLUDING AN OIL LUBRICATED COMPRESSOR HAVING A HOT GAS DISCHARGE CONDUIT COMMUNICATING WITH A CONDENSER, MEANS ASSOCIATED WITH THE INLET TO THE CONDENSER IN COMMUNICATION WITH THE HOT GAS DISCHARGE CONDUIT FOR INITIALLY SEPARATING OIL FROM THE REFRIGERANT EMPLOYED IN THE SYSTEM, AN EXTRACTION CHAMBER SURROUNDING A CLOSED PORTION OF SAID HOT GAS DISCHARGE CONDUIT BETWEEN THE COMPRESSOR AND SAID INITIAL OIL SEPARATING MEANS, WHEREBY SAID DISCHARGE CONDUIT PROVIDES A HEATING ELEMENT FOR SAID EXTRACTION CHAMBER, AND A CONDUIT COMMUNICATING BETWEEN SAID INITIAL OIL SEPARATING MEANS AND SAID CHAMBER FOR CONDUCTING THE INITIALLY SEPARATED OIL HAVING RESIDUE REFRIGERANT THEREIN TO SAID CHAMBER, WHEREBY SAID HEATING ELEMENT PROVIDES HEAT FOR EXTRACTING RESIDUE REFRIGERANT FROM THE OIL, SAID CHAMBER ALSO HAVING A CONDUIT COMMUNICATING THEREWITH FOR DISCHARGING REFRIGERANT THEREFROM AND A SEPARATE CONDUIT COMMUNICATING THEREWITH FOR DISCHARGING OIL THEREFROM.
Claim 2
Dependent Claim
141 words
IN A REFRIGERATION SYSTEM INCLUDING AN OIL LUBRICATED COMPRESSOR HAVING A HOT GAS DISCHARGE CONDUIT COMMUNICATING WITH A CONDENSER, MEANS ASSOCIATED WITH THE INLET TO THE CONDENSER IN COMMUNICATION WITH THE HOT GAS DISCHARGE CONDUIT FOR INITIALLY SEPARATING OIL FROM THE REFRIGERANT EMPLOYED IN THE SYSTEM, AN EXTRACTION CHAMBER SURROUNDING A CLOSED PORTION OF SAID HOT GAS DISCHARGE CONDUIT BETWEEN THE COMPRESSOR AND SAID INITIAL OIL SEPARATING MEANS, WHEREBY SAID DISCHARGE CONDUIT PROVIDES A HEATING ELEMENT FOR SAID EXTRACTION CHAMBER, AND A CONDUIT COMMUNICATING BETWEEN SAID INITIAL OIL SEPARATING MEANS AND SAID CHAMBER FOR CONDUCTING THE INITIALLY SEPARATED OIL HAVING RESIDUE REFRIGERANT THEREIN TO SAID CHAMBER, WHEREBY SAID HEATING ELEMENT PROVIDES HEAT FOR EXTRACTING RESIDUE REFRIGERANT FROM THE OIL, SAID CHAMBER ALSO HAVING A CONDUIT COMMUNICATING THEREWITH FOR DISCHARGING REFRIGERANT THEREFROM AND A SEPARATE CONDUIT COMMUNICATING THEREWITH FOR DISCHARGING OIL THEREFROM.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |