US3306074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cooling canned pump and refrigeration system containing the same
Assignee: Pall Corp
•
Filing: 1965-03-01
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Granted: 1967-02-28
•
Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Charles A Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:23
CPC Classifications
F; F25; F25B; F25B31/00; F25B31/006; F25B31/002
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A MOTOR PUMP FOR THE PUMPING OF COMPRESSED VAPOR REFRIGERANTS, COMPRISING A HOUSING DEFINING AN IMPELLER CHAMBER, A MOTOR CHAMBER AND A HEAT EXCHANGER; AN IMPELLER IN THE IMPELLER CHAMBER, AND A MOTOR IN THE MOTOR CHAMBER; AN INLET AND AN OUTLET IN THE IMPELLER CHAMBER FOR CIRCULATION OF FLUID TO BE PUMPED THERETHROUGH, AND AN INLET AND OUTLET IN THE MOTOR CHAMBER FOR CIRCULATION OF PUMPED FLUID THERETHROUGH FOR LUBRICATING AND COOLING; A PRESSURE RELIEF CONNECTION BETWEEN A HIGH PRESSURE PORTION OF THE IMPELLER CHAMBER AND THE MOTOR CHAMBER TO RELIEVE ANY INCREASE IN FLUID VOLUME IN THE MOTOR CHAMBER DUE TO HEAT FROM THE MOTOR; A HEAT EXCHANGING SEPARATOR MEMBER IN THE HEAT EXCHANGER SEPARATING THE HEAT EXCHANGER INTO TWO COMPARTMENTS, ONE COMPARTMENT BEING IN FLUID FLOW CONNECTION WITH THE INLET AND OUTLET OF THE MOTOR CHAMBERSO AS TO FORM A FLUID
Claim 2
Dependent Claim
144 words
A MOTOR PUMP FOR THE PUMPING OF COMPRESSED VAPOR REFRIGERANTS, COMPRISING A HOUSING DEFINING AN IMPELLER CHAMBER, A MOTOR CHAMBER AND A HEAT EXCHANGER; AN IMPELLER IN THE IMPELLER CHAMBER, AND A MOTOR IN THE MOTOR CHAMBER; AN INLET AND AN OUTLET IN THE IMPELLER CHAMBER FOR CIRCULATION OF FLUID TO BE PUMPED THERETHROUGH, AND AN INLET AND OUTLET IN THE MOTOR CHAMBER FOR CIRCULATION OF PUMPED FLUID THERETHROUGH FOR LUBRICATING AND COOLING; A PRESSURE RELIEF CONNECTION BETWEEN A HIGH PRESSURE PORTION OF THE IMPELLER CHAMBER AND THE MOTOR CHAMBER TO RELIEVE ANY INCREASE IN FLUID VOLUME IN THE MOTOR CHAMBER DUE TO HEAT FROM THE MOTOR; A HEAT EXCHANGING SEPARATOR MEMBER IN THE HEAT EXCHANGER SEPARATING THE HEAT EXCHANGER INTO TWO COMPARTMENTS, ONE COMPARTMENT BEING IN FLUID FLOW CONNECTION WITH THE INLET AND OUTLET OF THE MOTOR CHAMBERSO AS TO FORM A FLUID
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |