Patent ID: 8528846

Claim:
A vibratory crushing apparatus comprising: at least one trough having an inlet end and an outlet end along a longitudinal axis, and a wall defining a material-receiving space having a first cross-sectional area; at least one crusher disposed in the trough along the longitudinal axis, the at least one crusher having an outer surface that conforms to an inner surface of the wall about a circumference of the crusher, and a second cross-sectional area that is smaller than the first cross-sectional area so as to define a gap between the outer surface of the at least one crusher and the inner surface of the wall; and a vibration generator coupled to the at least one trough to cause material to move between the inlet end and the outlet end and to cause the at least one crusher to move relative to the wall of the trough, the vibration generator comprising at least one shaft having one or more eccentric weights attached thereto, the shaft disposed orthogonally to the longitudinal axis of the trough.