US3209992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically enclosed small refrigerating machine and procedure for the operation ofsaid machine
Assignee: Individual
•
Filing: 1964-02-21
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Granted: 1965-10-05
•
Expires: 1984-02-21
Abstract
No abstract record available.
Inventors
- 👤 Christiansen Erik Frede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:48
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/02; H; H02; H02K; H02K3/00; H02K3/30; Y; Y10; Y10S; Y10S417/00; Y10S417/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A REFRIGERATION SYTEM A HERMETIC REFRIGERATION COMPRESSOR HAVING A CAPSULE, A MOTOR DRIVEN COMPRESSOR HAVING A MOTOR COMPRISING INSULATED WINDINGS COMPRISING INSULATED WIRE, AND WINDING SLOTS, IN COMBINATION, A GASEOUS REFRIGERANT IN SAID CAPSULE COMPRISING HALOGENIZED HYDROCARBONS, A LUBRICANT IN SAID CAPSULE COMPRISING A PARAFFIN-BASE MINERAL OIL IN CONTACT WITH SAID REFRIGERANT AND RESISTANT TO REACTION THEREWITH, SAID OIL COMPRISING AN OIL PRETREATED TO REMOVE THEREFROM CRYSTALLIZATION CONSITUENTS CRYSTALLIZABLE AND REMOVABLE FROM THE OIL AT TEMPEATURES BELOW --40*C.; WIRE INSULATION ON SAID WINDINGS AND INSULATION ON SAID SLOTS EACH COMPRISING A SEPARATE SYNTHETIC MATERIAL RESISTANT TO SAID REFRIGERANT, SAID OIL, AND A MIXTURE OF SAID OIL AND SAID REFRIGERANT, THE SYNTHETIC MATERIALS BEING TEMPERATURE RESISTANT TO TEMPERATURES OVER 155*C.
Claim 2
Dependent Claim
120 words
IN A REFRIGERATION SYTEM A HERMETIC REFRIGERATION COMPRESSOR HAVING A CAPSULE, A MOTOR DRIVEN COMPRESSOR HAVING A MOTOR COMPRISING INSULATED WINDINGS COMPRISING INSULATED WIRE, AND WINDING SLOTS, IN COMBINATION, A GASEOUS REFRIGERANT IN SAID CAPSULE COMPRISING HALOGENIZED HYDROCARBONS, A LUBRICANT IN SAID CAPSULE COMPRISING A PARAFFIN-BASE MINERAL OIL IN CONTACT WITH SAID REFRIGERANT AND RESISTANT TO REACTION THEREWITH, SAID OIL COMPRISING AN OIL PRETREATED TO REMOVE THEREFROM CRYSTALLIZATION CONSITUENTS CRYSTALLIZABLE AND REMOVABLE FROM THE OIL AT TEMPEATURES BELOW --40*C.; WIRE INSULATION ON SAID WINDINGS AND INSULATION ON SAID SLOTS EACH COMPRISING A SEPARATE SYNTHETIC MATERIAL RESISTANT TO SAID REFRIGERANT, SAID OIL, AND A MIXTURE OF SAID OIL AND SAID REFRIGERANT, THE SYNTHETIC MATERIALS BEING TEMPERATURE RESISTANT TO TEMPERATURES OVER 155*C.
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |