US3234753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot gas refrigeration defrosting system
Assignee: Individual
•
Filing: 1963-01-03
•
Granted: 1966-02-15
•
Expires: 1983-01-03
Abstract
No abstract record available.
Inventors
- 👤 Lester K Quick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:13
CPC Classifications
F; F25; F25B; F25B5/00; F25B5/02; F25B1/00; F25B1/10; F25B47/00; F25B47/02; F25B47/022; F25B2400/00; F25B2400/13; F25B2400/22; F25B2600/00; F25B2600/25; F25B2600/2509
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A DEFROSTING SYSTEM FOR USE WITH A REFRIGERATION SYSTEM EMPLOYING A COMPRESSOR, A CONDENSER AND AT LEAST TWO EVAPORATOR COILS HAVING INLET EXPANSION MEANS, THE COMBINATION OF: MEANS FOR SELECTIVELY ISOLATING EACH SAID EVAPORATOR COIL FROM THE NORMAL REFRIGERATION BY SAID COMPRESSOR AND CONDENSER AND OPERABLY CONNECTING SAID SELECTED EVAPORATOR COIL TO THE OUTPUT OF THE COMPRESSOR FOR CONDUCTING HOT COMPRESSED GASEOUS REFRIGERANT FOR DEFROSTING SAID SELECTED EVAPORATOR COIL, MEANS SEPARATE FROM THE NORMAL REFRIGERATION SYSTEM OPERABLY CONNECTING SAID SELECTED EVAPORATOR COIL TO AT LEAST ONE OTHER EVAPORATOR COIL FOR CONDUCTING THE REFRIGERANT USED IN
Claim 2
Dependent Claim
96 words
IN A DEFROSTING SYSTEM FOR USE WITH A REFRIGERATION SYSTEM EMPLOYING A COMPRESSOR, A CONDENSER AND AT LEAST TWO EVAPORATOR COILS HAVING INLET EXPANSION MEANS, THE COMBINATION OF: MEANS FOR SELECTIVELY ISOLATING EACH SAID EVAPORATOR COIL FROM THE NORMAL REFRIGERATION BY SAID COMPRESSOR AND CONDENSER AND OPERABLY CONNECTING SAID SELECTED EVAPORATOR COIL TO THE OUTPUT OF THE COMPRESSOR FOR CONDUCTING HOT COMPRESSED GASEOUS REFRIGERANT FOR DEFROSTING SAID SELECTED EVAPORATOR COIL, MEANS SEPARATE FROM THE NORMAL REFRIGERATION SYSTEM OPERABLY CONNECTING SAID SELECTED EVAPORATOR COIL TO AT LEAST ONE OTHER EVAPORATOR COIL FOR CONDUCTING THE REFRIGERANT USED IN
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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |