US3257818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system
Assignee: Carrier Corp
•
Filing: 1964-07-28
•
Granted: 1966-06-28
•
Expires: 1984-07-28
Abstract
No abstract record available.
Inventors
- 👤 James A Papapanu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:45
CPC Classifications
F; F25; F25B; F25B1/00; F25B2341/00; F25B2341/001; F25B2341/0011; F25B2341/0012; F25B2400/00; F25B2400/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN A COOLING SYSTEM, THE COMBINATION COMPRISING, HEAT EXCHANGER MEANS FOR COOLING A LOAD, AND REFRIGERATION MEANS COMPRISING A DIRECT CONTACT EVAPORATOR FOR CONTAINING A REFRIGERANT AND WATER, AND SAID REFRIGERATION MEANS FURTHER COMPRISING MEANS FOR SPRAYING SAID REFRIGERANT AND SAID WATER IN INTIMATE ASSOCIATION WITH EACH OTHER INTO SAID EVAPORATOR AND VAPORIZING SAID REFRIGERANT AND PROVIDING A CHILLE MIXTURE OF WATER AND ICE PARTICLES AND MEANS FOR PASSING SAID MIXTURE THROUGH SAID HEAT EXCHANGER MEANS, WHEREBY THE TEMPERATURE THROUGHOUT
Claim 2
Dependent Claim
80 words
IN A COOLING SYSTEM, THE COMBINATION COMPRISING, HEAT EXCHANGER MEANS FOR COOLING A LOAD, AND REFRIGERATION MEANS COMPRISING A DIRECT CONTACT EVAPORATOR FOR CONTAINING A REFRIGERANT AND WATER, AND SAID REFRIGERATION MEANS FURTHER COMPRISING MEANS FOR SPRAYING SAID REFRIGERANT AND SAID WATER IN INTIMATE ASSOCIATION WITH EACH OTHER INTO SAID EVAPORATOR AND VAPORIZING SAID REFRIGERANT AND PROVIDING A CHILLE MIXTURE OF WATER AND ICE PARTICLES AND MEANS FOR PASSING SAID MIXTURE THROUGH SAID HEAT EXCHANGER MEANS, WHEREBY THE TEMPERATURE THROUGHOUT
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |