US3605432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigerating system
Assignee: Individual
•
Filing: 1969-01-23
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Granted: 1971-09-20
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Expires: 1989-01-23
Abstract
Abstract A DIRECT FIRE TYPE DOUBLE-EFFECT ABSORPTION REFRIGERATING SYSTEM COMPRISING AS ITS PRINCIPAL COMPONENT DEVICES AN EVAPORATOR, AN ABSORBER, A GENERATOR, A CONDENSER AND TWO SOLUTION HEAT-EXCHANGERS AND IN WHICH A HOT WATER FOR SERVICE FORMING DEVICE IS PROVIDED IN PARALLEL TO A REFRIGERATING CYCLE SYSTEM OR HEAT PUMP CYCLE SYSTEM AND REFRIGERANT GAS IS DIRECTLY INTRODUCED FROM A GENERATOR WHICH IS HEATED FROM AN EXTERNAL HEATING SOURCE OR A LIQUID SEPARATOR CONNECTED TO SAID GENERATOR INTO SAID HOT WATER FORMING DEVICE THEREBY TO FORM A CONDENSED REFRIGERANT LIQUID WHICH IS TO BE RECYCLED TO SAID GENERATOR.
Inventors
- 👤 Masaji Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:49
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/008; F25B15/02; F25B15/06; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |