Patent ID: 6910651

Claim:
A device for crushing material comprising: a housing having a feed port to receive material into the housing to be crushed and a discharge for crushed material; a first rotor disposed in the housing having a first axis and defining a first crushing surface, wherein said first rotor is circular defining a circular first crushing surface, each arc segment of the circle defined by a substantially arcuate plate; a second rotor disposed in the housing having a second axis, said second rotor including an axial cavity to pass material, a face defining a second crushing surface adapted to be spaced from the first crushing surface to define a circumferential nip for crushing material between said first and second crushing surfaces, said crushed material ejected at said nip, one of said first or second crushing surfaces including channels extending outwardly through said nip to eject said crushed material; and means for rotating the first rotor to centrifugally direct material between said nip for crushing thereof, said crushed material ejected from said nip and channels and discharged from said housing discharge.