.~> Yieldingly or pivotedly mounted or flexible blade
DEFINITION
Classification: 415/140
(under the class definition) Apparatus comprising (1) a blade* or a portion thereof which is formed or mounted so as to move relative to its support or a fixed position, (2) the runner* or its shaft* mounted to move in a direction parallel to the axis of rotation from one position to another, while in use and without the intervention of a human attendant.
(1) Note. Examples of devices included under this definition are: one which is buoyed up by the working fluid* (usually water acting on a surface associated with a turbine) to reduce friction on the lower step bearing, one in which a portion of the blade* has a fluid operated valve thereon and one in which the blade* is regularly and cyclically
self-feathering.
SEE OR SEARCH THIS CLASS, SUBCLASS:
106, for a device in which the runner* is mounted for slight axial movement to vary flow into and out of balancing chamber to neutralize end thrust on the shaft*.
125, for a device having means to impart regular and cyclical movement to a blade*.
126+, for devices in which there are means provided to positively selectively move or hold in a selected position the blade*, runner* of shaft*. 129+, for a device having means for positively and selectively moving a runner* or runner supporting shaft*.
