Abstract: Crushing walls arranged in opposed pairs to form a V-shaped crushing chamber each have a bar spring element arranged adjacent the outer surface thereof. Exciters, capable of providing at least 75 hp to the crushing walls, urge the spring members toward and away from each other causing the crushing walls to converge and crush material therebetween.

Abstract: A crushing apparatus includes a substantially U-shaped spring member having a first beam portion having a first free end, a second beam portion having a second free end, and a fixed center portion. The first and second free ends are in opposed, spaced relation with each other. A first crushing mass is positioned on the first free end, and a second crushing mass is positioned on the second free end of the spring member. An exciter is configured to excite the first and second beam portions at about a common first modal frequency. When so excited, the first and second crushing masses reciprocally converge and diverge such that material positioned between the crushing masses is at least partially crushed therebetween.