Patent ID: 8628035
Filing Date: 2014-01-14
Classification: E02F,E04G

Abstract:
1. A blade set associated with jaws for demolition equipment, wherein at least one jaw rotates relative to the other jaw about a rotational axis within a common rotational plane, the blade set comprising: a) a bottom blade adapted to be secured to the bottom jaw, wherein the bottom blade has: b) a top blade adapted to be secured to the top jaw, wherein the top blade has: c) wherein the top blade and the bottom blade are symmetric about the rotational plane; d) wherein the ratio of the length of each recess to the planar surface segment length is between 1.0-3.0; e) wherein when viewed from the side, the recesses in the top blade and in the bottom blade have two sides extending about a recess centerline and extending away from adjacent planar surface segments, wherein the two sides come together and intersect at a radiused segment therebetween; f) wherein the sides of the recesses form an angle A with the central axis of at least 20 degrees; and g) wherein the raised knife rail closes into the cavity.