Hydraulic turbine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 27, 2021
Grant Date -
May 14, 2020
app pub date -
Nov 18, 2019
filing date -
Jul 25, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A hydraulic turbine includes a rotor with a runner, which is concentrically surrounded by a stator, whereby the runner comprises a plurality of runner blades arranged and distributed in a ring around a rotor axis, and each runner blade extends between a runner crown and a runner band; whereby the stator comprises a plurality of guide vanes arranged and distributed in a ring around the rotor axis, and each guide vane extends between an upper stator ring and a lower stator ring; and whereby a predetermined clearance is provided at least between the runner band and the lower stator ring. A substantial reduction of pressure pulsations in the vane-less gap between said runner blades of said runner is achieved by substantially increasing said predetermined clearance.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2019 Application Filing Year
- F03B Class
- 198 Applications Filed
- 128 Patents Issued To-Date
- 64.65 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F03B Class
- 0 % this patent is cited more than
- 4 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 27, 2025 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 27, 2029 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jan 27, 2033 |
