US3240424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil supply systems for refrigerant compressors
Assignee: McQuay Perfex Inc
•
Filing: 1964-07-01
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Granted: 1966-03-15
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Expires: 1984-07-01
Abstract
No abstract record available.
Inventors
- 👤 Douglas K Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:55
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/04; F25B1/053; F25B31/00; F25B31/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
AN OIL SUPPLY SYSTEM FOR A COMPRESSOR-MOTOR UNIT, COMPRISING AN OIL PUMP, OIL STORAGE MEANS HAVING ITS INLET CONNECTED TO THE OUTLET OF SAID PUMP, AN OIL RETURN TUBE CONNECTING THE INLET OF SAID PUMP TO SAID UNIT, AN OIL SUPPLY TUBE CONNECTED TO THE OUTLET OF SAID STORAGE MEANS, A TWO-WAY VALVE, A THIRD TUBE CONNECTING SAID VALVE TO SAID INLET OF SAID STORAGE MEANS, A FOURTH TUBE CONNECTING SAID VALVE TO THE OUTLET OF SAID COMPRESSOR, AND MEANS FOR ADJUSTING SAID VALVE TO CONNECT SAID FOURTH TUBE TO SAID THIRD TUBE FOR SUPPLYING DISCHARGE GAS FROM SAID COMPRESSOR INTO SAID INLET OF SAID STORAGE MEANS TO FORCE OIL FROM SAID STORAGE MEANS THROUGH SAID OIL SUPPLY TUBE TO SAID UNIT.
Claim 2
Dependent Claim
122 words
AN OIL SUPPLY SYSTEM FOR A COMPRESSOR-MOTOR UNIT, COMPRISING AN OIL PUMP, OIL STORAGE MEANS HAVING ITS INLET CONNECTED TO THE OUTLET OF SAID PUMP, AN OIL RETURN TUBE CONNECTING THE INLET OF SAID PUMP TO SAID UNIT, AN OIL SUPPLY TUBE CONNECTED TO THE OUTLET OF SAID STORAGE MEANS, A TWO-WAY VALVE, A THIRD TUBE CONNECTING SAID VALVE TO SAID INLET OF SAID STORAGE MEANS, A FOURTH TUBE CONNECTING SAID VALVE TO THE OUTLET OF SAID COMPRESSOR, AND MEANS FOR ADJUSTING SAID VALVE TO CONNECT SAID FOURTH TUBE TO SAID THIRD TUBE FOR SUPPLYING DISCHARGE GAS FROM SAID COMPRESSOR INTO SAID INLET OF SAID STORAGE MEANS TO FORCE OIL FROM SAID STORAGE MEANS THROUGH SAID OIL SUPPLY TUBE TO SAID UNIT.
References Cited (Backward Citations)
US2602583A
Cited
US2602680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |