Patent ID: 6887143

Claim:
A power grinder ( 10 ), comprising: a grinding sheet holder ( 14 ) having the shape of a plate and a working face ( 15 ), wherein a grinding sheet ( 16 ) is supported on the working face ( 15 ); clamping means disposed on the grinding sheet holder ( 14 ) at a pivot shaft ( 24 ) on a bearing block ( 28 ), wherein opposite grinding sheet ends ( 17 , 19 ) are firmly held on the grinding sheet holder ( 14 ) by said clamping means, the clamping means including a two-armed clamping lever ( 20 ) having a swinging arm ( 21 ) at one side of said pivot shaft, and a clamping jaw ( 22 ) supported pivotably about the pivot shaft at another side thereof bracing the grinding sheet on said grinding sheet holder ( 14 ), the clamping jaw being elastically biased towards a clamping direction against which the grinding sheet is insertable between the jaw and the sheet holder, whereby upon motion counter to the insertion direction, the grinding sheet ends are locked by an outer contour ( 27 ) of the clamping jaw ( 22 ) that extends convexly from the pivot shaft ( 24 ) and a detent face ( 23 ) of the grinding sheet holder ( 14 ).