Patent ID: 7306178

Claim:
A pulverizer comprising: a) a grinding chamber; b) a center shaft disposed in the grinding chamber, the center shaft defining an axis of rotation and configured for rotational motion within the grinding chamber; c) a grinding chamber interior wall disposed substantially perpendicular to the center shaft, the interior wall including at least one cheek plate disposed thereon; and d) a grinding chamber side liner attached to the interior wall of the grinding chamber, the liner having an elongate arcuate liner body having a substantially planar back face attached against the interior wall and a front face facing the interior of the grinding chamber disposed between a radially inner edge and a radially outer edge, wherein: i) the front face has a radial dimension that changes along a length of the liner body; and ii) the radially inner edge includes an overhanging rim defining a shoulder adjacent thereto, the rim overlapping a radially outer edge of the cheek plate to cover a gap defined between the shoulder of the liner body and the adjacent cheek plate in the grinding chamber.