| 摘要 |
A wheel assembly including a rotatably driven runnerhead comprised of one or more plate-like members having a series of radially disposed blades or vanes adjustably secured thereto. The vanes are accomodated within blade slots or grooves which extend across the radial width of each plate-like member. Each plate-like member has two side surfaces, a rim joined to the side surfaces and defining the diamater of the plate-like member, and at least one chamfer or bevel which joins one side surface to the rim. In the area of the blade slot runout, radii are provided to enhance the wear characteristics of the wheel assembly.
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