US3091184A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pump anti-cavitation device
Assignee: SMITH DOUGLASS CO Inc
•
Filing: 1960-08-10
•
Granted: 1963-05-28
•
Expires: 1980-08-10
Abstract
No abstract record available.
Inventors
- 👤 Lonnie G Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:36
CPC Classifications
F; F04; F04D; F04D9/00; F04D9/001
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A PUMP ANTI-CAVITATION DEVICE FOR A CENTRIFUGAL PUMP ADAPTED TO PUMP A SLURRY OF SOLID MATERIAL SUSPENDED IN A LIQUID COMPRISING A TANK LOCATED ADJACENT THE INTAKE OF THE PUMP, SAID TANK BEING OPEN TO THE ATMOSPHERE AND CONTAINING A BODY OF LIQUID BEING PUMPED, THE LIQUID WITHIN THE TANK BEING UNDER ATMOSPHERIC PRESSURE, A SUCTION PIPE LINE CONNECTED TO THE INTAKE OF THE PUMP AND EXTENDING SUBSTANTIALLY HORIZONTALLY THROUGH THE LOWER PORTION OF THE TANK, THE SECTION OF THE PUMP SUCTION PIPE LINE WITHIN THE TANK BEING FORMED WITH AT LEAST ONE OPENING IN THE UPPERMOST SURFACE OF SAID PIPE, MEANS FOR MAINTAINING THE LIQUID LEVEL IN THE TANK A PRE-
References Cited (Backward Citations)
US1536961A
Cited
FR469463A
Cited
US1789528A
Cited
FR771379A
Cited
GB439299A
Cited
FR795324A
Cited
US2111473A
Cited
US2204788A
Cited
US2318251A
Cited
US2379615A
Cited
US2425070A
Cited
US2747507A
Cited
US2784674A
Cited
US2841088A
Cited
US2816573A
Cited
US2798767A
Cited
US2912112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-27 | 1966-11-26 | 1967-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-27 | 1970-11-26 | 1971-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-27 | 1974-11-26 | 1975-05-28 | $7700.00 | Window Closed / Lapsed |