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US 2003/0143934 A1Published application
Abrasive band tightening apparatus
OwnerDonald E. Haneyinventor
Life of this patent
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Abstract
An abrasive drum, suitable for polishing or sanding a workpiece, that incorporates an internal expansion member, configured so that when a belt of abrasive material fitted to the exterior cylindrical surface so that a loop of the band is disposed around the internal expansion member, expansion of the member tensions the abrasive band against the surface of the drum. The invention includes the abrasive drum, a sander or polisher that incorporates the abrasive drum, and a method of using the drum of the invention to grind, shape, polish, or sand a workpiece.
Claims14
A sanding drum assembly comprising
- a drum structure having a substantially cylindrical outer surface,
- an opening in the surface of the drum for receiving a portion of an abrasive belt that forms a substantially closed pocket inside the drum structure, and
- an expansion member configured to be expanded inside the pocket of the abrasive belt so that the abrasive belt is tightly secured around the outer surface of the drum structure.
Dependencies are inferred from the claim text.