US3102491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined booster pump and centrifugal separator
Assignee: Nash Engineering Co
•
Filing: 1960-08-29
•
Granted: 1963-09-03
•
Expires: 1980-08-29
Abstract
No abstract record available.
Inventors
- 👤 Harold E Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:55
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/04; F04D9/041; B; B64; B64D; B64D37/00; B64D37/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A CENTRIFUGAL PUMP INCLUDING A CASING HAVING A CENTRAL INLET AND AN ANNULAR VOLUTE CHAMBER, AND AN IMPELLER ROTATABLE WITHIN SAID CASING FOR DRAWING LIQUID THROUGH SAID INLET AND INTO SAID VOLUTE CHAMBER, THE IMPROVEMENT COMPRISING A PARTICLE TRAP PASSAGE EXTENDING AROUND AT LEAST A PORTION OF THE OUTER PERIPHERY OF SAID VOLUTE CHAMBER AND IN OPEN COMMUNICATION WITH SAID CHAMBER, A PERFORATED STRIPPER PLATE LOCATED IN THE OPENING BETWEEN THE PARTICLE TRAP PASSAGE AND SAID VOLUTE CHAMBER DEFINING AT LEAST A PORTION OF THE PERIPHERY OF SAID VOLUTE CHAMBER, AND A MAIN PUMP DISCHARGE PASSAGE COMMUNICATING WITH A SIDE PORTION OF SAID VOLUTE CHAMBER RADIALLY INWARD FROM THE OUTER PERIPHERY OF SAID VOLUTE CHAMBER.
Claim 2
Dependent Claim
116 words
IN A CENTRIFUGAL PUMP INCLUDING A CASING HAVING A CENTRAL INLET AND AN ANNULAR VOLUTE CHAMBER, AND AN IMPELLER ROTATABLE WITHIN SAID CASING FOR DRAWING LIQUID THROUGH SAID INLET AND INTO SAID VOLUTE CHAMBER, THE IMPROVEMENT COMPRISING A PARTICLE TRAP PASSAGE EXTENDING AROUND AT LEAST A PORTION OF THE OUTER PERIPHERY OF SAID VOLUTE CHAMBER AND IN OPEN COMMUNICATION WITH SAID CHAMBER, A PERFORATED STRIPPER PLATE LOCATED IN THE OPENING BETWEEN THE PARTICLE TRAP PASSAGE AND SAID VOLUTE CHAMBER DEFINING AT LEAST A PORTION OF THE PERIPHERY OF SAID VOLUTE CHAMBER, AND A MAIN PUMP DISCHARGE PASSAGE COMMUNICATING WITH A SIDE PORTION OF SAID VOLUTE CHAMBER RADIALLY INWARD FROM THE OUTER PERIPHERY OF SAID VOLUTE CHAMBER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |