US3205828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High efficiency low specific speed centrifugal pump
Assignee: Gorman Rupp Co
•
Filing: 1963-08-23
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Granted: 1965-09-14
•
Expires: 1983-08-23
Abstract
No abstract record available.
Inventors
- 👤 Warren E Rupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:30
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CENTRIFUGAL PUMP COMPRISING: A CASING AND AN IMPELLER, THE CASING HAVING AN IMPELLER CHAMBER PROVIDED WITH A CYLINDRICAL OUTER SURFACE, A CYLINDRICAL GROOVE HVING SUBSTANTIAL RADIAL EXTENT SURROUNDING AND SUBSTANTIALLY COAXING WITH SAID SURFACE AND COMMUNICATING WITH THE IMPELLER CHAMBER THROUGH AN ANNULAR OPENING IN SAID SURFACE, AT LEAST ONE DISCHARGE THROAT EXTENDING FROM SAID GROOVE AND A DIFFUSER NOZZLE COMMUNICATING WITH SAID THROAT, SAID THROAT EXTENDING TANGENTIALLY FROM SAID GROOVE AND SUBSTANTIALLY COAXIALLY WITH SAID THROAT AND NOZZLE, WHEREBY FLUID DISCHARGED INTO SAID GROOVE WILL FLOW SMOOTHLY THEREIN THEREAROUND AND TO AND THEROUGH THE THROAT AND ITS VELOCITY WILL BE CONVERTED INTO PRESSURE IN SAID NOZZLE,
Claim 2
Dependent Claim
108 words
A CENTRIFUGAL PUMP COMPRISING: A CASING AND AN IMPELLER, THE CASING HAVING AN IMPELLER CHAMBER PROVIDED WITH A CYLINDRICAL OUTER SURFACE, A CYLINDRICAL GROOVE HVING SUBSTANTIAL RADIAL EXTENT SURROUNDING AND SUBSTANTIALLY COAXING WITH SAID SURFACE AND COMMUNICATING WITH THE IMPELLER CHAMBER THROUGH AN ANNULAR OPENING IN SAID SURFACE, AT LEAST ONE DISCHARGE THROAT EXTENDING FROM SAID GROOVE AND A DIFFUSER NOZZLE COMMUNICATING WITH SAID THROAT, SAID THROAT EXTENDING TANGENTIALLY FROM SAID GROOVE AND SUBSTANTIALLY COAXIALLY WITH SAID THROAT AND NOZZLE, WHEREBY FLUID DISCHARGED INTO SAID GROOVE WILL FLOW SMOOTHLY THEREIN THEREAROUND AND TO AND THEROUGH THE THROAT AND ITS VELOCITY WILL BE CONVERTED INTO PRESSURE IN SAID NOZZLE,
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |