Patent ID: 6634577
Filing Date: 2003-10-21
Classification: B02C

Abstract:
A crusher comprisinga first pressing element having a first pressing face provided thereon with protrusions each in a form of an isolate island surrounded by depressed marginal spaces, the protrusions being disposed not only in first parallel rows but also in second parallel rows which extend in a direction crossing the first parallel rows, and a second pressing element to be held in engagement with the first pressing element when being pressed thereonto, the second pressing element having a second pressing face provided thereon with protrusions each in a form of an isolate island surrounded by depressed marginal spaces, the protrusions being disposed not only in first parallel rows but also in second parallel rows which extend in a direction crossing the first parallel rows, wherein the protrusions of the first and the second pressing elements are disposed in such a relationship that the protrusions of the first or the second pressing element will engage with corresponding depressed marginal spaces on the second or the first pressing face of the second or the first pressing element, respectively, so as to permit crushing of the material supplied to interspaces therebetween.