US3296823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigerating system having pump means circulating absorbent and refrigerant
Assignee: Trane US Inc
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Filing: 1965-06-16
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Granted: 1967-01-10
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Expires: 1985-06-16
Abstract
No abstract record available.
Inventors
- 👤 Robert P Novak
- 👤 James M Porter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:04
CPC Classifications
F; F25; F25B; F25B15/00; F25B15/02; F25B15/06; F04; F04D; F04D13/00; F04D13/12; F04D13/14; F25B15/025; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
IN AN ABSORPTION REFRIGERATING SYSTEM HAVING A REFRIGERANT AND AN ABSORBENT, THE COMBINATION OF AN ABSORBER, AN EVAPORATOR, A GENERATOR, A CONDENSER AND A PUMP TO CIRCULATE REFRIGERANT AND ABSORBENT IN SAID SYSTEM, SAID PUMP HAVING A SHAFT ROTATABLY MOUNTED THEREIN, A MOTOR DRIVINGLY CONNECTED TO SAIDSHAFT, A FIRST IMPELLER MOUNTED ON SAID SHAFT, CONDUIT FOR CONDUCTING ABSORBENT FROM SAID ABSORBER TO THE INLET OF SAID FIRST IMPELLER, CONDUIT FOR CONDUCTING ABSORBENT FROM THE OUTLET OF SAID FIRST IMPELLER TO SAID GENERATOR, A SECOND IMPELLER MOUNTED ON SAID SHAFT IN ADJACENT BACK-TO-BACK RELATIONSHIP WITH SAID FIRST IMPELLER, CONDUIT FOR CONDUCTING ABSORBENT FROM A FIRST PORTION OF SAID ABSORBER TO THE INLET OF SAID SECOND IMPELLER, CONDUIT FOR CONDUCTING ABSORBENT FROM THE OUTLET OF SAID SECOND IMPELLER TO A SECOND PORTION OF THE ABSORBER, A THIRD IMPELLER MOUNTED ON SAID SHAFT, CONDUIT FOR CONDUCTING REFRIGERANT FROM A FIRST PORTION OF THE EVAPORATOR TO THE INLET OF SAID THIRD IMPELLER AND CONDUIT FOR CONDUCTING REFRIGERANT FROM THE OUTLET OF SAID THIRD IMPELLER TO A SECOND PORTION OF THE EVAPORATOR.
Claim 2
Dependent Claim
177 words
IN AN ABSORPTION REFRIGERATING SYSTEM HAVING A REFRIGERANT AND AN ABSORBENT, THE COMBINATION OF AN ABSORBER, AN EVAPORATOR, A GENERATOR, A CONDENSER AND A PUMP TO CIRCULATE REFRIGERANT AND ABSORBENT IN SAID SYSTEM, SAID PUMP HAVING A SHAFT ROTATABLY MOUNTED THEREIN, A MOTOR DRIVINGLY CONNECTED TO SAIDSHAFT, A FIRST IMPELLER MOUNTED ON SAID SHAFT, CONDUIT FOR CONDUCTING ABSORBENT FROM SAID ABSORBER TO THE INLET OF SAID FIRST IMPELLER, CONDUIT FOR CONDUCTING ABSORBENT FROM THE OUTLET OF SAID FIRST IMPELLER TO SAID GENERATOR, A SECOND IMPELLER MOUNTED ON SAID SHAFT IN ADJACENT BACK-TO-BACK RELATIONSHIP WITH SAID FIRST IMPELLER, CONDUIT FOR CONDUCTING ABSORBENT FROM A FIRST PORTION OF SAID ABSORBER TO THE INLET OF SAID SECOND IMPELLER, CONDUIT FOR CONDUCTING ABSORBENT FROM THE OUTLET OF SAID SECOND IMPELLER TO A SECOND PORTION OF THE ABSORBER, A THIRD IMPELLER MOUNTED ON SAID SHAFT, CONDUIT FOR CONDUCTING REFRIGERANT FROM A FIRST PORTION OF THE EVAPORATOR TO THE INLET OF SAID THIRD IMPELLER AND CONDUIT FOR CONDUCTING REFRIGERANT FROM THE OUTLET OF SAID THIRD IMPELLER TO A SECOND PORTION OF 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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |