Patent ID: 7115028
Filing Date: 2006-10-03
Classification: B24D

Abstract:
1. A coupling structure for grinding members to fasten at least one grinding member to a pneumatic tool, comprising: a first clamping disk which has a sleeve extended from the center of one side to run through the grinding member, the sleeve having a first aperture running through the first clamping disk; a second clamping disk having a second aperture in the center to receive the sleeve; and a fastening element running through the first clamping disk and the second clamping disk through the first aperture and the second aperture to clamp the grinding member between the first clamping disk and the second clamping disk and fasten the grinding member to the pneumatic tool, the sleeve has a distal end remote from the first clamping disk formed in a polygonal manner, the second aperture being formed in the polygonal manner mating with the distal end of the sleeve to increase the fastening effect of the sleeve and the second clamping disk.