US2550113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerator embodying stabilized mixtures of oil and aliphatic halides
Assignee: Westinghouse Electric Corp
•
Filing: 1950-02-03
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Granted: 1951-04-24
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Expires: 1970-02-03
Abstract
No abstract record available.
Inventors
- 👤 Leonard C Flowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:08
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04; C09K5/041; C09K5/044; C10; C10M; C10M171/00; C10M171/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A REFRIGERATOR COMPRISING A SEALED SYSTEM INCLUDING A COMPRESSOR, IN COMBINATION, A SUPPLY OF REFRIGERANT MEDIUM DISPOSED IN THE SEALED SYSTEM WHEREBY VAPORS OF THE REFRIGERANT MEDIUM ARE COMPRESSED DIN THE COMPRESSOR AND CONDENSED TO A LIQUID, THE REFRIGERANT MEDIUM COMPRISING A HALOGENATED ALIPHATIC COMPOUND, A PETROLEUM OIL FOR LUBRICATING THE COMPRESSOR IN ADMIXTURE WITH THE REFRIGERANT MEDIUM, THE MIXTURE OF PETROLEUM OIL AND HALOGENATED ALIPHATIC COMPOUND BEING SUBJECT TO DETERIORATIVE REACTION IN THE SYSTEM WHEN HEATED BY COMPRESSION, AND BORIC ANHYDRIDE DISPOSED IN THE SYSTEM IN CONTACT WITH THE MIXTURE OF PETROLEUM OIL AND REFRIGERANT MEDIUM TO REDUCE DETERIORATIVE REACTION.
Claim 2
Dependent Claim
102 words
IN A REFRIGERATOR COMPRISING A SEALED SYSTEM INCLUDING A COMPRESSOR, IN COMBINATION, A SUPPLY OF REFRIGERANT MEDIUM DISPOSED IN THE SEALED SYSTEM WHEREBY VAPORS OF THE REFRIGERANT MEDIUM ARE COMPRESSED DIN THE COMPRESSOR AND CONDENSED TO A LIQUID, THE REFRIGERANT MEDIUM COMPRISING A HALOGENATED ALIPHATIC COMPOUND, A PETROLEUM OIL FOR LUBRICATING THE COMPRESSOR IN ADMIXTURE WITH THE REFRIGERANT MEDIUM, THE MIXTURE OF PETROLEUM OIL AND HALOGENATED ALIPHATIC COMPOUND BEING SUBJECT TO DETERIORATIVE REACTION IN THE SYSTEM WHEN HEATED BY COMPRESSION, AND BORIC ANHYDRIDE DISPOSED IN THE SYSTEM IN CONTACT WITH THE MIXTURE OF PETROLEUM OIL AND REFRIGERANT MEDIUM TO REDUCE DETERIORATIVE REACTION.
References Cited (Backward Citations)
US2212826A
Cited
US2523863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |