Blade for a Water Turbine
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United States of America Patent
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Issued Date -
Jul 23, 2015
app pub date -
Oct 18, 2013
filing date -
Dec 4, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
The invention relates to a blade (1.1) for a water turbine, comprising the following features or components: •—a body made of sheet steel or cast steel, said body having mutually opposite outer surfaces that are in contact with the water during operation; •—at least one relief notch (5) which is located in a peripheral region of the blade (1.1) and extends through mutually opposite regions of the outer surfaces; •—a curable filling compound (6) which fills the cavity in the notch (5). The invention is characterized by the following features: •—retaining bodies (10) are fixed to the notch surface (5.1), said retaining bodies (10) being embedded in the filling compound (6) in the mounted state; •—the retaining bodies (10) have protrusions which prevent the filling compound (6) from falling out by way of a tight fit when the filling compound has cured.
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