US3608332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration system
Assignee: Carrier Corp
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Filing: 1970-03-18
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Granted: 1971-09-28
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Expires: 1990-03-18
Abstract
Abstract AN ABSORPTION REFRIGERATION SYSTEM WHEREIN THERE IS PROVIDED IN COMMUNICATION WITH THE EVAPORATOR, ABSORBER, GENERATOR AND CONDENSER FLUID HANDLING APPARATUS IN THE FORM OF A HERMETIC HOUSING MOUNTING THEREIN A ROTATIVELY DRIVEN SHAFT MEMBER JOURNALED AT OPPOSITE ENDS IN BEARING MEANS AND SUPPORTING A PLURALITY OF SCOOP PUMPS FOR EFFECTING, AMONG OTHER FUNCTIONS, CIRCULATION OF REFRIGERANT AND ABSORBENT SOLUTION THROUGH THE SYSTEM, PURGING, AND MACHINE CAPACITY CONTROL.
Inventors
- 👤 Louis H Leonard Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:22
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/025; F04; F04D; F04D1/00; F04D1/12; 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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |