Patent US3092981A successfully refreshed from Google Patents.
US3092981A
Expired / Lapsed
US
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Refrigeration apparatus
Assignee: Motors Liquidation Co
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Filing: 1960-07-15
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Granted: 1963-06-11
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Expires: 1980-07-15
Abstract
No abstract record available.
Inventors
- 👤 Charles R Begeman
- 👤 Victor A Williamitis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:03
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/002; C; C10; C10M; C10M171/00; C10M171/008; C10M2203/00; C10M2203/06; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10N; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A REFRIGERATING APPARATUS OF THE SEALED COMPRESSOR TYPE COMPRISING A COMPRESSOR, CONDENSER AND EVAPORATOR IN REFRIGERANT FLOW RELATIONSHIP, AND A WORKING FLUID WITHIN SAID APPARATUS IN CONTACT WITH MOVING PARTS OF SAID COMPRESSOR WHICH REQUIRE LUBRICATION, SAID WORKING FLUID CONSISTING ESSENTIALLY OF A REFRIGERANT AND A CHEMICALLY INERT, WAX-FREE LUBRICANT SOLUBLE IN SAID REFRIGERANT, SAID REFRIGERANT BEING A FLUORO HALO SUBSTITUTED HYDROCARBON SELECTED FROM THE CLASS CONSISTING OF METHANE AND ETHANE AND BEING IN THE LIQUID AND GASEOUS PHASES WIHTIN THE OPERATING TEMPERATURES OF SAID REFRIGERATING APPARATUS, SAID LUBRICANT BEING PRESENT IN AN AMOUNT SUFFICIENT TO LUBRICATE THE MOVING PARTS OF SAID COMPRESSOR AND COMPRISING AN ALKYL BENZENE IN WHICH THE ALKYL GROUPS CONTAIN 1 TO ABOUT 50 CARBON ATOMS AND HAVING A VISCOSITY OF ABOUT 50 TO 2,000 SECONDS SAYBOLT MEASURED AT 100*F.
Claim 2
Dependent Claim
134 words
A REFRIGERATING APPARATUS OF THE SEALED COMPRESSOR TYPE COMPRISING A COMPRESSOR, CONDENSER AND EVAPORATOR IN REFRIGERANT FLOW RELATIONSHIP, AND A WORKING FLUID WITHIN SAID APPARATUS IN CONTACT WITH MOVING PARTS OF SAID COMPRESSOR WHICH REQUIRE LUBRICATION, SAID WORKING FLUID CONSISTING ESSENTIALLY OF A REFRIGERANT AND A CHEMICALLY INERT, WAX-FREE LUBRICANT SOLUBLE IN SAID REFRIGERANT, SAID REFRIGERANT BEING A FLUORO HALO SUBSTITUTED HYDROCARBON SELECTED FROM THE CLASS CONSISTING OF METHANE AND ETHANE AND BEING IN THE LIQUID AND GASEOUS PHASES WIHTIN THE OPERATING TEMPERATURES OF SAID REFRIGERATING APPARATUS, SAID LUBRICANT BEING PRESENT IN AN AMOUNT SUFFICIENT TO LUBRICATE THE MOVING PARTS OF SAID COMPRESSOR AND COMPRISING AN ALKYL BENZENE IN WHICH THE ALKYL GROUPS CONTAIN 1 TO ABOUT 50 CARBON ATOMS AND HAVING A VISCOSITY OF ABOUT 50 TO 2,000 SECONDS SAYBOLT MEASURED AT 100*F.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |