Multistage centrifugal pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 17, 2023
Grant Date -
Jan 12, 2023
app pub date -
Jun 29, 2022
filing date -
Jul 6, 2021
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A multistage centrifugal pump for conveying a fluid includes a pump housing with an inlet to receive the fluid and an outlet to discharge the fluid, a first stage impeller and a last stage impeller to convey the fluid from the inlet to the outlet, a shaft to rotate the first stage impeller and the last stage impeller about an axial direction, a suction chamber arranged upstream of the first stage impeller and in fluid communication with the inlet, a recirculation path for the fluid including a return opening and extending from the return opening to the suction chamber, the return opening located at or in the flow path downstream of the first stage impeller and upstream of the last stage impeller, and a flow control rod disposed in the recirculation path, the flow control rod to adjust a recirculation flow through the recirculation path into the suction chamber.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2022 Application Filing Year
- F04D Class
- 1086 Applications Filed
- 587 Patents Issued To-Date
- 54.06 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F04D Class
- 0 % this patent is cited more than
- 2 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Apr 17, 2027 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Apr 17, 2031 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Apr 17, 2035 |
