Patent ID: 8245964
Filing Date: 2012-08-21
Classification: A62B,B23D,E02F,E04G,Y10T

Abstract:
1. A shear tool for demolition comprising: a) a body adapted to be attached to demolition equipment, wherein the body has a guide extending longitudinally along the body; b) a first blade and a second blade pivotally attached together by a main pin and also connected to the body, wherein each blade has associated with it at least two cutting inserts and wherein the second blade has a slot to accept the first blade to maintain the cutting inserts in a shearing relationship throughout the cutting movement; c) wherein a portion of the slot has a width greater than the width of the first blade such that there is a blade relief provided within the slot along a portion of the blades; d) a linkage associated with each blade, wherein a first end of each linkage is attached to a respective blade; e) a slide member movable within the body along the longitudinal direction, with a second end of each linkage attached to the slide member with a pivot pin common to all of the linkages; and f) a piston cylinder arrangement attached to the body and coupled to the slide member for moving the slide member in the longitudinal direction and pivoting the blades.