Patent US3343375A successfully refreshed from Google Patents.
US3343375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latent heat refrigeration defrosting system
Assignee: IVENTORS DEVELOPMENT ASSN Inc
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Filing: 1965-06-23
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Granted: 1967-09-26
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Expires: 1985-06-23
Abstract
No abstract record available.
Inventors
- 👤 Lester K Quick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:28
CPC Classifications
F; F25; F25B; F25B5/00; F25B5/02; F25B40/00; F25B40/02; F25B47/00; F25B47/02; F25B47/022; F25B2400/00; F25B2400/13; F25B2400/16; F25B2400/22; F25B2400/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A PROCESS FOR DEFROSTING REMOTELY LOCATED EVAPORATOR MEANS OF A CONVENTIONAL CLOSED CYCLE REFRIGERATION SYSTEM USING A REFRIGERANT HAVING A SATURATION TEMPERATURE ABOVE 32* F. AT THE CONDENSING PRESSURE OF THE SYSTEM, COMPRISING THE STEPS OF: COMPRESSING THE REFRIGERANT TO THE CONDENSING PRESSURE OF THAT CLOSED CYCLE REFRIGERATION SYSTEM, POSITIVELY COOLING AT LEAST A PORTION OF THAT COMPRESSED REFRIGERANT AT A CENTRAL LOCATION TO SUBSTANTIALLY THE SATURATION TEMPERATURE OF THE REFRIGERANT GAS AT THAT PRESSURE WITHOUT CONDENSING THE REFRIGERANT, ISOLATING THE EVAPORATOR MEANS TO BE DEFROSTED FROM THE NORMAL REFRIGERATION CYCLE, CONDUCTING ONLY THE SATURATED GASEOUS REFRIGERANT TO THE REMOTE LOCATION OF THE ISOLATED EVAPORATOR MEANS, PASSING THAT SATURATED GASEOUS REFRIGERANT THROUGH THE ISOLATED EVAPORATOR MEANS FOR HEATING AND DEFROSTING THAT EVAPORATOR MEANS WITH THE REFRIGERANT
Claim 2
Dependent Claim
126 words
A PROCESS FOR DEFROSTING REMOTELY LOCATED EVAPORATOR MEANS OF A CONVENTIONAL CLOSED CYCLE REFRIGERATION SYSTEM USING A REFRIGERANT HAVING A SATURATION TEMPERATURE ABOVE 32* F. AT THE CONDENSING PRESSURE OF THE SYSTEM, COMPRISING THE STEPS OF: COMPRESSING THE REFRIGERANT TO THE CONDENSING PRESSURE OF THAT CLOSED CYCLE REFRIGERATION SYSTEM, POSITIVELY COOLING AT LEAST A PORTION OF THAT COMPRESSED REFRIGERANT AT A CENTRAL LOCATION TO SUBSTANTIALLY THE SATURATION TEMPERATURE OF THE REFRIGERANT GAS AT THAT PRESSURE WITHOUT CONDENSING THE REFRIGERANT, ISOLATING THE EVAPORATOR MEANS TO BE DEFROSTED FROM THE NORMAL REFRIGERATION CYCLE, CONDUCTING ONLY THE SATURATED GASEOUS REFRIGERANT TO THE REMOTE LOCATION OF THE ISOLATED EVAPORATOR MEANS, PASSING THAT SATURATED GASEOUS REFRIGERANT THROUGH THE ISOLATED EVAPORATOR MEANS FOR HEATING AND DEFROSTING THAT EVAPORATOR MEANS WITH THE REFRIGERANT
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |