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US 4,064,661 AGranted
Centrifugal blasting apparatus
OwnerRiichi Maedainventor
Life of this patent
Estimating the term…
Abstract
A centrifugal blasting apparatus with a spindle arranged vertically, a boss fixed to the spindle, and a plurality of vanes provided circumferentially on the boss. The vanes are slanting with respect to the axis of rotation and an axis perpendicular to the axis of rotation. The apparatus throws abrasive particles in the axial direction permitting minimal size.
Claims9
A centrifugal blasting apparatus comprising:
- a spindle mounted vertically in the apparatus;
- a blast wheel having an axis of rotation coinciding with the spindle for rotating with the spindle to blast abrasive particles toward a workpiece;
- and
- means for supplying the blast wheel with the abrasive particles;
- said blast wheel comprising a boss and a plurality of vanes fixed to the boss and arranged around the axis of rotation in an equally spaced relation from each other, the vanes each lying in a plane slanting with respect to the axis of rotation at an angle ranging between 25.degree. and 65.degree., and with respect to an axis perpendicular to the axis of rotation, at an angle ranging between 40.degree. and 80.degree., the abrasive particles being fed to the top portion of the blast wheel.
2 more elements
A centrifugal blasting apparatus comprising:
- a spindle mounted vertically in the apparatus;
- a blast wheel having an axis of rotation coinciding with the spindle for rotating with the spindle to blasting abrasive particles toward a workpiece;
- and
- a chute for supplying the blast wheel with abrasive particles;
- said blast wheel comprising a boss fixed to the spindle and a plurality of vanes fixed to the boss and arranged around the axis of rotation in an equally spaced relation from each other, the vanes each being curved in the forward direction of rotation of the blast wheel as they go from the lower portion of the boss toward the upper portion of the boss, the vanes being formed such that tangent planes at any point on the geometrical median line of representative vanes make substantially the same angle, and said vanes being further formed so that those tangent planes at points on the upper portion of the median line of the respective vanes make an acute angle with an axis perpendicular to the axis of rotation, the tangent planes at points on the lower portion of the median line of the respective vanes make an acute angle with the axis perpendicular to the axis of rotation when measured in the reverse direction and the tangent plane at the middle point of the median line of the respective vanes cross substantially at 0.degree. with the axis being perpendicular to the axis of rotation.
2 more elements
Dependencies are inferred from the claim text.