US4138862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling apparatus
Assignee: Individual
•
Filing: 1976-10-08
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Granted: 1979-02-13
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Expires: 1996-10-08
Abstract
Abstract A refrigerator having a cooled induction motor, the housing interior of which is completely filled with a cooling medium, and having a cooler for the re-cooling of the cooling medium in the housing interior by means of another medium separate from the cooling medium of the motor, in which insulating cooling oil is contained as cooling medium in the housing interior of the induction motor.
Inventors
- 👤 Arnold Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:59
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/19; F; F25; F25B; F25B31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A refrigerating apparatus comprising: (i) an evaporator (ii) a compressor (iii) a condenser (iv) means defining passages forming with the evaporator and the compressor and the condenser a closed circuit containing a refrigerant fluid (v) an induction motor coupled to and serving to drive the compressor, said motor having a stator and a rotor (vi) a housing enclosing the stator and rotor (vii) a heat exchanger (viii) means defining passages forming with the housing and the heat exchanger a closed circuit containing a coolant liquid, the evaporator and the heat exchanger being spatially disposed one adjacent the other such that heat transfer may take place from the heat exchanger to the evaporator.
Claim 2
Dependent Claim
112 words
A refrigerating apparatus comprising: (i) an evaporator (ii) a compressor (iii) a condenser (iv) means defining passages forming with the evaporator and the compressor and the condenser a closed circuit containing a refrigerant fluid (v) an induction motor coupled to and serving to drive the compressor, said motor having a stator and a rotor (vi) a housing enclosing the stator and rotor (vii) a heat exchanger (viii) means defining passages forming with the housing and the heat exchanger a closed circuit containing a coolant liquid, the evaporator and the heat exchanger being spatially disposed one adjacent the other such that heat transfer may take place from the heat exchanger to the evaporator.
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) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |