Patent ID: 7140566

Claim:
A refiner chamber in which solid material is reduced to a particulate form, comprising: (a) a rotatable sidewall; (b) a bottom disposed across an end of the sidewall, wherein the bottom and the sidewall define a chamber; (c) a tooted disk rotatably mounted within the chamber such that an edge of the toothed disk approaches near the rotatable sidewall; (d) one or more attachments directly secured to the bottom, wherein the one or more attachments are secured to the bottom where the edge of the toothed disk approaches the rotatable sidewall, the one or more attachments being configured to limit the amount ad/or size of solid material tat can be held laterally between the sidewall and the toothed disk and reduced to a particulate form; and (e) one or more cleats on the interior surface of the sidewall, in which the cleats are configured to engage solid material in the chamber, direct the solid material toward the toothed disk, and act as an opposing member that helps hold the solid material laterally between the disk and the sidewall as the disk rotates and reduces the solid material to a particulate form.