US3153441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and air-conditioning unit
Assignee: Individual
•
Filing: 1963-05-10
•
Granted: 1964-10-20
•
Expires: 1983-05-10
Abstract
No abstract record available.
Inventors
- 👤 Elvin B Pippert
- 👤 Russell E Landes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:13
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00007; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
AN ABSORPTION REFRIGERATION SYSTEM, COMPRISING: (A) A HEAT EXCHANGER COIL, (B) MEANS FOR EVAPORATING A REFRIGERANT IN SAID HEAT EXCHANGER COIL TO EFFECT COOLING IN THE AREA SURROUNDING SAID HEAT EXCHANGER COIL, (C) AN ABSORBER MEANS OPERABLY CONNECTED WITH SAID HEAT EXCHANGER COIL FOR INCREASING THE CONCENTRATION OF THE AQUEOUS AMMONIA SOLUTION THEREIN, (D) A GENERATOR TO HEAT SAID AQUEOUS AMMONIA SOLUTION FOR THE EVAPORIZATION THEREOF, AND (E) A FLOAT VALVE IN SAID ABSORBER FOR CONTROLLING THE INLET AND OUTLET OF AQUEOUS AMMONIA LIQUID FROM THE ABSORBER FOR THEREBY CONTROLLING THE LEVEL OF THE AQUEOUS AMMONIA LIQUID IN SAID ABSORBER AND IN SAID GENERATOR.
Claim 2
Dependent Claim
104 words
AN ABSORPTION REFRIGERATION SYSTEM, COMPRISING: (A) A HEAT EXCHANGER COIL, (B) MEANS FOR EVAPORATING A REFRIGERANT IN SAID HEAT EXCHANGER COIL TO EFFECT COOLING IN THE AREA SURROUNDING SAID HEAT EXCHANGER COIL, (C) AN ABSORBER MEANS OPERABLY CONNECTED WITH SAID HEAT EXCHANGER COIL FOR INCREASING THE CONCENTRATION OF THE AQUEOUS AMMONIA SOLUTION THEREIN, (D) A GENERATOR TO HEAT SAID AQUEOUS AMMONIA SOLUTION FOR THE EVAPORIZATION THEREOF, AND (E) A FLOAT VALVE IN SAID ABSORBER FOR CONTROLLING THE INLET AND OUTLET OF AQUEOUS AMMONIA LIQUID FROM THE ABSORBER FOR THEREBY CONTROLLING THE LEVEL OF THE AQUEOUS AMMONIA LIQUID IN SAID ABSORBER AND IN SAID GENERATOR.
References Cited (Backward Citations)
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Cited
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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) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |