US3269606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid chiller and dispenser
Assignee: Crathco Inc
•
Filing: 1964-03-03
•
Granted: 1966-08-30
•
Expires: 1984-03-03
Abstract
No abstract record available.
Inventors
- 👤 Armstrong Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:48
CPC Classifications
F; F25; F25D; F25D31/00; F25D31/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
LIQUID-PROCESSING APPARATUS, COMPRISING A CONTAINER FOR A QUANTITY OF A LIQUID, A HEAT-TRANSFER PLATE HAVING AT LEAST A SUBSTANTIALLY FLAT ANNULAR PORTION, A CENTRIFUGAL IMPELLER MOUNTED FOR ROTATION IN CLOSE PROXIMITY WITH AND ABOUT AN AXIS SUBSTANTIALLY NORMALLY TO ONE SIDE OF SAID HEAT-TRANSFER PLATE CENTRALLY OF AND COAXIALLY WITH SAID ANNULAR PORTION, MOTIVE MEANS, ON THE OTHER SIDE OF SAID HEAT-TRANSFER PLATE COUPLED WITH AND ROTATING SAID IMPELLER, SUBSTANTIALLY FLAT ANNULAR REFRIGERATION MEANS MOUNTED IN INTIMATE HEAT-EXCHANGE RELATIONSHIP WITH SAID OTHER SIDE OF SAID ANNULAR PORTION OF SAID HEAT-TRANSFER PLATE, SHALLOW PUMP MEANS HAVING A SUBSTANTIALLY SPIRAL LIQUID FLOW PASSAGEWAY COAXIALLY ABOUT AND COMMUNICATING WITH SAID IMPELLER AND EXPOSED ALONG ONE SIDE FOR SUBSTANTIALLY ITS FULL LENGTH TO SAID ONE SIDE OF SAID ANNULAR PORTION OF SAID HEAT-TRANSFER PLATE, MEANS ADMITTING LIQUID FROM SAID CONTAINER TO SAID IMPELLER NEAR SAID AXIS AND MEANS FOR DISCHARGING ACCELERATED LIQUID FROM SAID PASSAGEWAY INTO SAID CONTAINER.
Claim 2
Dependent Claim
154 words
LIQUID-PROCESSING APPARATUS, COMPRISING A CONTAINER FOR A QUANTITY OF A LIQUID, A HEAT-TRANSFER PLATE HAVING AT LEAST A SUBSTANTIALLY FLAT ANNULAR PORTION, A CENTRIFUGAL IMPELLER MOUNTED FOR ROTATION IN CLOSE PROXIMITY WITH AND ABOUT AN AXIS SUBSTANTIALLY NORMALLY TO ONE SIDE OF SAID HEAT-TRANSFER PLATE CENTRALLY OF AND COAXIALLY WITH SAID ANNULAR PORTION, MOTIVE MEANS, ON THE OTHER SIDE OF SAID HEAT-TRANSFER PLATE COUPLED WITH AND ROTATING SAID IMPELLER, SUBSTANTIALLY FLAT ANNULAR REFRIGERATION MEANS MOUNTED IN INTIMATE HEAT-EXCHANGE RELATIONSHIP WITH SAID OTHER SIDE OF SAID ANNULAR PORTION OF SAID HEAT-TRANSFER PLATE, SHALLOW PUMP MEANS HAVING A SUBSTANTIALLY SPIRAL LIQUID FLOW PASSAGEWAY COAXIALLY ABOUT AND COMMUNICATING WITH SAID IMPELLER AND EXPOSED ALONG ONE SIDE FOR SUBSTANTIALLY ITS FULL LENGTH TO SAID ONE SIDE OF SAID ANNULAR PORTION OF SAID HEAT-TRANSFER PLATE, MEANS ADMITTING LIQUID FROM SAID CONTAINER TO SAID IMPELLER NEAR SAID AXIS AND MEANS FOR DISCHARGING ACCELERATED LIQUID FROM SAID PASSAGEWAY INTO SAID CONTAINER.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |