Patent ID: 7481699

Claim:
A fan-type grinding wheel which is drivable in rotation in a direction of rotation ( 16 ), with a support plate ( 5 ) which comprises a centre line ( 9 ), an inner hub ( 6 ) and an annular rim region ( 8 ), with grinding blades ( 1 , 1 ′, 1 ″, 1 ′″, 1 a , 1 ′ a , 1 ″ a , 1 ′″ a ) which are each configured in the basic shape of a triangle with three main edges, namely an outer edge ( 2 , 2 ′, 2 a , 2 ′ a ), an inner edge, ( 3 , 3 ′, 3 a , 3 ′ a ) and a rear edge ( 4 , 4 ′, 4 a , 4 ′ a ) and are each arranged at equal angular intervals on the rim region ( 8 ) so as to form an annular grinding blade package ( 13 ) in such a way that the outer edge ( 2 , 2 ′, 2 a , 2 ′ a ) defines a portion of an outer rim ( 14 ) of the grinding blade package ( 13 ), the inner edge ( 3 , 3 ′, 3 a , 3 ′ a ) extends from an inner rim ( 19 ) of the grinding blade package ( 13 ) to the outer rim ( 14 ) and is covered in part by grinding blades ( 1 , 1 ′, 1 ″, 1 ′″, 1 a , 1 ′ a , 1 ″ a , 1 ′″ a ), which precede it in the direction of rotation ( 16 ), and the rear edge ( 4 , 4 ′, 4 a , 4 ′ a ) is exposed and extends in a leading manner from the inner rim ( 19 ) to the outer rim ( 14 ) of the grinding blade package ( 13 )—with respect to the direction of rotation ( 16 ).