US3138007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot gas defrosting system
Assignee: Hussmann Corp
•
Filing: 1962-09-10
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Granted: 1964-06-23
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Expires: 1982-09-10
Abstract
No abstract record available.
Inventors
- 👤 Donald E Friedman
- 👤 Lester K Quick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:26
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022; F25B5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
IN A REFRIGERATION SYSTEM INCLUDING COMPRESSOR MEANS, CONDENSER-RECEIVER MEANS CONNECTED TO THE DISCHARGE SIDE OF SAID COMPRESSOR MEANS, A PLURALITY OF EVAPORATOR MEANS NORMALLY CONNECTED BETWEEN SAID CONDENSER-RECEIVER MEANS AND THE SUCTION SIDE OF SAID COMPRESSOR MEANS, AND MEANS FOR SELECTIVELY DIVERTING HOT GASEOUS REFRIGERANT FROM THE COMPRESSOR DISCHARGE TO SAID EVAPORATOR MEANS FOR DEFROSTING SAME, THE COMBINATION OF AN ACCUMULATOR RECEIVING CONDENSED REFRIGERANT FROM SAID EVAPORATOR MEANS DURING DEFROSTING THEREOF, A VAPOR RETURN LINE FROM SAID ACCUMULATOR TO THE SUCTION SIDE OF
Claim 2
Dependent Claim
83 words
IN A REFRIGERATION SYSTEM INCLUDING COMPRESSOR MEANS, CONDENSER-RECEIVER MEANS CONNECTED TO THE DISCHARGE SIDE OF SAID COMPRESSOR MEANS, A PLURALITY OF EVAPORATOR MEANS NORMALLY CONNECTED BETWEEN SAID CONDENSER-RECEIVER MEANS AND THE SUCTION SIDE OF SAID COMPRESSOR MEANS, AND MEANS FOR SELECTIVELY DIVERTING HOT GASEOUS REFRIGERANT FROM THE COMPRESSOR DISCHARGE TO SAID EVAPORATOR MEANS FOR DEFROSTING SAME, THE COMBINATION OF AN ACCUMULATOR RECEIVING CONDENSED REFRIGERANT FROM SAID EVAPORATOR MEANS DURING DEFROSTING THEREOF, A VAPOR RETURN LINE FROM SAID ACCUMULATOR TO THE SUCTION SIDE OF
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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) | 1967-06-23 | 1967-12-23 | 1968-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-23 | 1971-12-23 | 1972-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-23 | 1975-12-23 | 1976-06-23 | $7700.00 | Window Closed / Lapsed |