Patent ID: 8113919

Claim:
A bowling ball surface treatment apparatus, comprising: a housing; a ring-shaped ball movement guider provided inside the housing for guiding movement of a bowling ball and confining the bowling ball within a limited surface treatment area, the ball movement guider having a ball reception opening having a diameter greater than a diameter of the bowling ball, the ball movement guider having an inner surface formed of a curvilinear guide surface portion for guiding the bowling ball along a curved course of movement and a diverter portion for changing the course of movement of the bowling ball; a surface treatment disc arranged below the ball movement guider for supporting, rotating and revolving the bowling ball, the surface treatment disc having a disc shaft and a surface treatment element for making frictional contact with the bowling ball to abrade or polish the bowling ball; a disc rotating device for rotating the surface treatment disc about a disc center axis; and a disc revolving device for rotatably holding the disc shaft of the surface treatment disc and for causing the surface treatment disc to make revolving movement around a sun axis offset from the disc center axis and also being offset from a vertical center axis of the ball movement guider; wherein when the surface treatment disc rotates and makes revolving movement around the sun axis as caused by the disc rotating device and the disc revolving device, the surface treatment disc rotates and revolve the bowling ball supported thereon, the movement of the bowling ball being further confined and changed by the ball movement guider so that the bowling ball makes frictional contact with the surface treatment element to abrade or polish the bowling ball.