Patent US3259307A successfully refreshed from Google Patents.
US3259307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetic refrigerant compressors
Assignee: McQuay Perfex Inc
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Filing: —
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Granted: 1966-07-05
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:50
CPC Classifications
F; F04; F04B; F04B39/00; F04B39/02; F04B39/0223; F04B39/023; F04B39/0238; F04B39/0246; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B39/0094; F04B39/0253; F04B39/12; F04B39/121; F04B39/128; Y; Y10; Y10S; Y10S417/00; Y10S417/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
IN A HERMETICALLY SEALED, REFRIGERANT COMPRESSOR HAVING A CASING CONTAINING A MOTOR COMPARTMENT IN ITS UPPER PORTION AND A CRANKCASE COMPARTMENT IN ITS LOWER PORTION, HAVING AN OIL SUMP IN SAID CRANKCASE COMPARTMENT, HAVING A CRANKSHAFT WITH ITS BOTTOM IN SAID CRANKCASE COMPARTMENT AND ITS TOP IN SAID MOTOR COMPARTMENT, HAVING A BEARING AROUND SAID CRANKSHAFT IN SAID MOTOR COMPARTMENT, SAID CRANKSHAFT HAVING A VERTICALLY EXTENDING, OFF-CENTER OIL PASSAGE, AND SAID COMPRESSOR HAVING MEANS FOR PUMPING OIL FROM SAID SUMP THROUGH SAID PASSAGE, THE IMPROVEMENT COMPRISING THE PROVISION IN SAID CRANKSHAFT OF A RADIAL PASSAGE EXTENDING FROM SAID BEARING BEYOND THE AXIS OF SAID CRANKSHAFT AND CROSSING THE TOP OF SAID OFF-CENTER PASSAGE, AND THE PROVISION IN SAID CRANKSHAFT OF A CENTRAL, GAS VENT PASSAGE HAVING ITS BOTTOM END OPENING INTO SAID RADIAL PASSAGE AND HAVING AN OPEN UPPER END AT SAID TOP OF SAID CRANKSHAFT.
Claim 2
Dependent Claim
146 words
IN A HERMETICALLY SEALED, REFRIGERANT COMPRESSOR HAVING A CASING CONTAINING A MOTOR COMPARTMENT IN ITS UPPER PORTION AND A CRANKCASE COMPARTMENT IN ITS LOWER PORTION, HAVING AN OIL SUMP IN SAID CRANKCASE COMPARTMENT, HAVING A CRANKSHAFT WITH ITS BOTTOM IN SAID CRANKCASE COMPARTMENT AND ITS TOP IN SAID MOTOR COMPARTMENT, HAVING A BEARING AROUND SAID CRANKSHAFT IN SAID MOTOR COMPARTMENT, SAID CRANKSHAFT HAVING A VERTICALLY EXTENDING, OFF-CENTER OIL PASSAGE, AND SAID COMPRESSOR HAVING MEANS FOR PUMPING OIL FROM SAID SUMP THROUGH SAID PASSAGE, THE IMPROVEMENT COMPRISING THE PROVISION IN SAID CRANKSHAFT OF A RADIAL PASSAGE EXTENDING FROM SAID BEARING BEYOND THE AXIS OF SAID CRANKSHAFT AND CROSSING THE TOP OF SAID OFF-CENTER PASSAGE, AND THE PROVISION IN SAID CRANKSHAFT OF A CENTRAL, GAS VENT PASSAGE HAVING ITS BOTTOM END OPENING INTO SAID RADIAL PASSAGE AND HAVING AN OPEN UPPER END AT SAID TOP OF SAID CRANKSHAFT.
References Cited (Backward Citations)
US2504528A
Cited
US3098604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |