Rotating diffuser pump
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 26, 2022
Grant Date -
Oct 20, 2016
app pub date -
Dec 3, 2014
filing date -
Dec 3, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A centrifugal pump with a rotating impeller and a rotating diffuser. The diffuser may be rotated with a controlled speed to broaden the operational range of the pump. Such control may be done independently of the rotational speed of the impeller to tailor pump operation to a particular NPSH, efficiency, fluid flow or related requirement. In one preferred form, the impeller and diffuser are made to counter-rotate relative to one another, while the independent rotational speed of each may be provided by one or more motors, as well as a variable-speed transmission coupled to such motor or motors. Such a pump is optimized for specific speed operating ranges beneath those associated with axial flow pump configurations.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- H02K Class
- 2148 Applications Filed
- 1788 Patents Issued To-Date
- 83.25 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H02K Class
- 0 % this patent is cited more than
- 3 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 | Jan 26, 2026 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 26, 2030 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 26, 2034 |
