(under subclass 64) Abrading machine or abrading shape for use therewith including means for abrading of one or more workpieces during a series of free fall movements, or propulsions, resulting from forces imparted thereon by a work receptacle in motion (generally rotational), and wherein the abrading contact may be: (a) that of mutual attrition between similarly freely moving work bodies; and/or (b) that between a work body and the receptacle wall structure; and/or (c) that exercised by an encompassing fluent particulate mass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
31+, for a tumbling process.
74, for a graining box.
75+, for a sandblast machine.
104+, and 113, for an immersion abrading machine.
SEE OR SEARCH CLASS
99, Foods and Beverages: Apparatus,
519+, 560+, and 623 for hulling and peeling apparatus including abrasion by tumbling but in which the material is usually contacted by an abrading tool.
241, Solid Material Comminution or Disintegration,
170+, and the notes thereto for a rotating receptacle, having a loose grinding material and subclass 284 for mutual attrition or compression comminutors.
366, Agitating, apparatus and methods where there is no abrading or surface-finishing use disclosed.
