US3241746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor lubricant equalizing pump
Assignee: Carrier Corp
•
Filing: 1965-02-08
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Granted: 1966-03-22
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Expires: 1985-02-08
Abstract
No abstract record available.
Inventors
- 👤 David N Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:35
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/08; F04B9/10; F04B9/103; F04B9/107; F01; F01L; F01L23/00; F04B39/00; F04B39/02; F04B39/0207; F04B41/00; F04B41/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
IN A SYSTEM HAVING AT LEAST TWO COMPRESSORS, EACH COMPRESSOR INCLUDING A SUMP FOR THE STORAGE OF LUBRICANT, THE COMBINATION OF MEANS FOR WITHDRAWING EXCESS LUBRICANT FROM THE SUMP OF A FIRST OF SAID COMPRESSORS INCLUDING A MEMBER HAVING A CHAMBER THEREIN; A PISTON-LIKE OPERATOR MOVABLY DISPOSED IN SAID CHAMBER, SAID OPERATOR SEPARATING SAID CHAMBER INTO FIRST AND SECOND COMPARTMENTS; SAID MEMBER HAVING FIRST AND SECOND PASSAGES THEREIN OPENING INTO SAID FIRST COMPARTMENT, SAID FIRST PASSAGE BEING CONNECTED TO SAID FIRST COMPRESSOR SUMP AT A PREDETERMINED LUBRICANT LEVEL; MEANS REGULATING SAID FIRST PASSAGE TO PREVENT OUTFLOW OF LUBRICANT FROM SAID FIRST COMPARTMENT THROUGH SAID FIRST PASSAGE INTO SAID FIRST COMPRESSOR SUMP; CONTROL MEANS ADAPTED TO COMMUNICATE SAID SECOND COMPARTMENT WITH A SOURCE OF PRESSURIZED FLUID TO MOVE SAID OPERATOR TO FORCE LUBRICANT IN SAID FIRST COMPARTMENT THROUGH SAID SECOND PASSAGE; AND MEANS CONNECTING SAID SECOND PASSAGE WITH THE SUMP OF A SECOND OF SAID COMPRESSORS.
Claim 2
Dependent Claim
155 words
IN A SYSTEM HAVING AT LEAST TWO COMPRESSORS, EACH COMPRESSOR INCLUDING A SUMP FOR THE STORAGE OF LUBRICANT, THE COMBINATION OF MEANS FOR WITHDRAWING EXCESS LUBRICANT FROM THE SUMP OF A FIRST OF SAID COMPRESSORS INCLUDING A MEMBER HAVING A CHAMBER THEREIN; A PISTON-LIKE OPERATOR MOVABLY DISPOSED IN SAID CHAMBER, SAID OPERATOR SEPARATING SAID CHAMBER INTO FIRST AND SECOND COMPARTMENTS; SAID MEMBER HAVING FIRST AND SECOND PASSAGES THEREIN OPENING INTO SAID FIRST COMPARTMENT, SAID FIRST PASSAGE BEING CONNECTED TO SAID FIRST COMPRESSOR SUMP AT A PREDETERMINED LUBRICANT LEVEL; MEANS REGULATING SAID FIRST PASSAGE TO PREVENT OUTFLOW OF LUBRICANT FROM SAID FIRST COMPARTMENT THROUGH SAID FIRST PASSAGE INTO SAID FIRST COMPRESSOR SUMP; CONTROL MEANS ADAPTED TO COMMUNICATE SAID SECOND COMPARTMENT WITH A SOURCE OF PRESSURIZED FLUID TO MOVE SAID OPERATOR TO FORCE LUBRICANT IN SAID FIRST COMPARTMENT THROUGH SAID SECOND PASSAGE; AND MEANS CONNECTING SAID SECOND PASSAGE WITH THE SUMP OF A SECOND OF SAID COMPRESSORS.
References Cited (Backward Citations)
US3009632A
Cited
US3072318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |