Blast wheels and cages for blast wheels
OwnerNorman Lewis Williamsinventor
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Abstract
A blast wheel assembly has a bladed rotor and an impeller which rotate together. A cage has an axial and angular wall including an aperture through which in use particulate material passes. The cross section of the aperture is irregular to control the uniformity of blast effect on a surface being treated. The assembly can be in a mobile or static machine. Various forms of aperture are described, the preferred form of which is of non-uniform shape as it extends angularly with respect to the cage axis, the aperture being of less cross-section in a region intermediate the angular end regions of the aperture.
Claims9
A cage for a blast wheel, the cage having an axis and comprising a wall extending angularly about and axially with respect to the axis, and means defining an aperture in the wall, the aperture having a non-uniform shape as it extends angularly with respect to the axis, in which the aperture is of less cross-section in a region intermediate the angular end regions of the aperture.
Dependencies are inferred from the claim text.