Patent US3092976A successfully refreshed from Google Patents.
US3092976A
Expired / Lapsed
US
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Refrigeration of one fluid by heat exchange with another
Assignee: Conch International Methane Ltd
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Filing: 1961-06-01
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Granted: 1963-06-11
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Expires: 1981-06-01
Abstract
No abstract record available.
Inventors
- 👤 Hashemi-Tafreshi Hadi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:20
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/10; F25J; F25J1/00; F25J1/0002; F25J1/0022; F25J1/003; F25J1/0047; F25J1/0052; F25J1/006; F25J1/008; F25J1/0085; F25J1/02; F25J1/0243; F25J1/0257; F25J1/0262; F25J1/0264; F25J1/0265; F25J1/0268; F25J1/0279; F25J1/0291; F25J2270/00; F25J2270/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A METHOD OF COOLING A FIRST FLUID WITH A SECOND FLUID WHICH COMPRISES: (A) PASSING THE SECOND FLUID AS A LIQUID AT A TEMPERATURE LOWER THAN THAT OF THE FIRST FLUID IN INDIRECT HEAT EXCHANGE WITH THE FIRST FLUID, THE PRESSURE OF THE SECOND FLUID BEING SUCH THAT IT REMAINS AS A LIQUID THROUGHOUT SUCH HEAT EXCHANGE STEP; (B) EXPANDING THE WARMED SECOND FLUID FROM THE HEAT EXCHANGE STEP IN A PLURALITY OF EXPANSION CHAMBERS IN SERIES TO PRODUCE A COLD SECOND FLUID AS A LIQUID AND, FROM EACH EXPANSION CHAMBER, A COLD SECOND FLUID AS A GAS; (C) RECOMPRESSING THE LIQUID FROM STEP (B) AND RECYCLING IT TO STEP (A); (D) RECOMPRESSING AND LIQUEFYING THE GASES FROM STEP (B), SAID LIQUEFACTION BEING EFFECTED BY INDIRECT HEAT EXCHANGE WITH A THIRD FLUID, AND (E) RECYCLING THE COMPRESSED LIQUID FROM STEP (D) TO THE EXPANSION CHAMBERS OF STEP (B).
Claim 2
Independent Claim
148 words
A METHOD OF COOLING A FIRST FLUID WITH A SECOND FLUID WHICH COMPRISES: (A) PASSING THE SECOND FLUID AS A LIQUID AT A TEMPERATURE LOWER THAN THAT OF THE FIRST FLUID IN INDIRECT HEAT EXCHANGE WITH THE FIRST FLUID, THE PRESSURE OF THE SECOND FLUID BEING SUCH THAT IT REMAINS AS A LIQUID THROUGHOUT SUCH HEAT EXCHANGE STEP; (B) EXPANDING THE WARMED SECOND FLUID FROM THE HEAT EXCHANGE STEP IN A PLURALITY OF EXPANSION CHAMBERS IN SERIES TO PRODUCE A COLD SECOND FLUID AS A LIQUID AND, FROM EACH EXPANSION CHAMBER, A COLD SECOND FLUID AS A GAS; (C) RECOMPRESSING THE LIQUID FROM STEP (B) AND RECYCLING IT TO STEP (A); (D) RECOMPRESSING AND LIQUEFYING THE GASES FROM STEP (B), SAID LIQUEFACTION BEING EFFECTED BY INDIRECT HEAT EXCHANGE WITH A THIRD FLUID, AND (E) RECYCLING THE COMPRESSED LIQUID FROM STEP (D) TO THE EXPANSION CHAMBERS OF STEP (B).
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 |