Patent ID: 7485030

Claim:
Grinding element for mounting in a recess ( 41 ) in a surface of a cylindric drum ( 42 ) comprising a retainer means ( 2 ) with outer sidewalls that are complementary to sidewalls of the recess ( 41 ), where a squeezing force (F) on the sidewalls of the retainer means ( 2 ) arises in a situation of use by rotation of the cylindric drum ( 42 ), where the retainer means ( 2 ) includes at least one groove ( 5 ) for securing a grinding means ( 1 ), the groove ( 5 ) extending from an outwards facing side of the retainer means ( 2 ) and inwards and forming at least one elastic, pliable flap in the retainer means ( 2 ) between the said groove ( 5 ) and at least one of the outer sidewalls, wherein the squeezing force (F) bends the elastic, pliable flap inwards, thereby tightening the retainer means ( 2 ) around a mounting means ( 3 ), wherein the grinding means ( 1 ) for accommodation in the groove ( 5 ) in the retainer means ( 2 ) comprises the mounting means ( 3 ) having a socket section ( 3 b ) with a shape complementary to the groove ( 5 ) in the retainer means ( 2 ).