Patent US3163997A successfully refreshed from Google Patents.
US3163997A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for defrosting absorption cooling systems
Assignee: Individual
•
Filing: 1960-07-06
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Granted: 1965-01-05
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Expires: 1980-07-06
Abstract
No abstract record available.
Inventors
- 👤 Stierlin Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:06
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A CLOSED ABSORPTION REFRIGERATION APPARATUS COMPRISING A MAIN SYSTEM INCLUDING A GENERATOR FROM WHICH REFRIGERANT VAPOR IS DRIVEN OFF, A CONDENSER IN WHICH SAID REFRIGERANT VAPOR IS CONDENSED TO A LIQUID, AND AN EVAPORATOR IN WHICH A PART OF THE LIQUID REFRIGERANT EVAPORATES, THE IMPROVEMENT FOR DEFROSTING COMPRISING AN AUXILIARY SYSTEM INCLUDING A BRANCH PIPE WHICH LEADS PART OF THE LIQIUID REFRIGERANT TO A RESERVOIR IN WHICH SAID PART OF THE LIQUID REFRIGERANT COLLECTS, A SIPHON CONNECTED TO THE RESERVOIR FOR EMPTYING THE RESERVOIR OF LIQUID REFRIGERANT WHEN THE LIQUID REFRIGERANT THEREIN ACCUMULATES TO A GIVEN LEVEL, A FIRST TUBING CONNECTED TO THE SIPHON OUTLET AND HAVING A PORTION THEREOF FORMING A HEAT EXCHANGER WITH THE GENERATOR, AND A SECOND TUBING CONNECTING THE TOP OF THE HEAT EXCHANGER SO FORMED TO THE EVAPORATOR.
Claim 2
Dependent Claim
133 words
A CLOSED ABSORPTION REFRIGERATION APPARATUS COMPRISING A MAIN SYSTEM INCLUDING A GENERATOR FROM WHICH REFRIGERANT VAPOR IS DRIVEN OFF, A CONDENSER IN WHICH SAID REFRIGERANT VAPOR IS CONDENSED TO A LIQUID, AND AN EVAPORATOR IN WHICH A PART OF THE LIQUID REFRIGERANT EVAPORATES, THE IMPROVEMENT FOR DEFROSTING COMPRISING AN AUXILIARY SYSTEM INCLUDING A BRANCH PIPE WHICH LEADS PART OF THE LIQIUID REFRIGERANT TO A RESERVOIR IN WHICH SAID PART OF THE LIQUID REFRIGERANT COLLECTS, A SIPHON CONNECTED TO THE RESERVOIR FOR EMPTYING THE RESERVOIR OF LIQUID REFRIGERANT WHEN THE LIQUID REFRIGERANT THEREIN ACCUMULATES TO A GIVEN LEVEL, A FIRST TUBING CONNECTED TO THE SIPHON OUTLET AND HAVING A PORTION THEREOF FORMING A HEAT EXCHANGER WITH THE GENERATOR, AND A SECOND TUBING CONNECTING THE TOP OF THE HEAT EXCHANGER SO FORMED TO THE EVAPORATOR.
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) | 1968-01-05 | 1968-07-06 | 1969-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-05 | 1972-07-06 | 1973-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-05 | 1976-07-06 | 1977-01-05 | $7700.00 | Window Closed / Lapsed |