Axial flow water turbine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 24, 2018
Issued Date -
N/A
app pub date -
Mar 20, 2014
filing date -
Apr 24, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An axial flow water turbine according to an embodiment includes a discharge ring and a runner vane. When seen in the runner meridional cross section, a straight line that passes a border between a cylindrical surface and a spherical surface of the discharge ring and that is perpendicular to a water turbine rotation axis is denoted as A. A crossing point between the straight line A and the water turbine rotation axis is denoted as B. A straight line inclined by an angle θ of 10 degrees or less is denoted as C. A cross point between the straight line C and the external peripheral end surface of the runner vane is denoted as D. In this case, the external peripheral end of the forward edge of the runner vane is located on the crossing point D.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- F03B Class
- 224 Applications Filed
- 194 Patents Issued To-Date
- 86.61 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F03B Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Oct 24, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 24, 2029 |
