US3277658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration apparatus
Assignee: Carrier Corp
•
Filing: 1965-07-19
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Granted: 1966-10-11
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Expires: 1985-07-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Louis H Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:24
CPC Classifications
F; F25; F25B; F25B1/00; F25B1/04; F25B1/053; F25B2400/00; F25B2400/07; F25B2400/075; F25B2400/14
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
THE METHOD OF UTILIZING ENERGY AVAILABLE IN REFRIGERANT FLOWING IN A REFRIGERATION CIRCUIT TO PERFORM USEFUL WORK WHICH COMPRISES THE STEPS OF CONDENSING REFRIGERANT VAPOR TO PROVIDE LIQUID REFRIGERANT AT A RELATIVELY HIGH PRESSURE, FORWARDING THE CONDENSED LIQUID REFRIGERANT TO A ZONE OF PRESSURE INTERMEDIATE THE HIGH PRESSURE ZONE AND THE LOW PRESSURE ZONE TO VAPORIZE A PART OF THE LIQUID REFRIGERANT AND EMPLOYING THE VAPORIZED REFRIGERENT AS A POWER SOURCE TO DRIVE MACHINERY ASSOCIATED WITH THE CIRCUIT.
References Cited (Backward Citations)
US3077087A
Cited
US3118286A
Cited
US2526103A
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US2519010A
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US2494120A
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US2921446A
Cited
US3038318A
Cited
US2952138A
Cited
US3097504A
Cited
US3146605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |