Patent ID: 6739963
Filing Date: 2004-05-25
Classification: B24B,B24D

Abstract:
Disk for grinding concrete for use on grinding propeller-shaped bases of a concrete grinder comprising:a bottom of the disk, at least a portion of the bottom composed of material suitable for grinding concrete; and an outline of the disk roughly in the shape of a cross, in which four equal arms are defined, equiangularly distributed, whose ends form part of an imaginary circumferential line corresponding to the theoretical diameter of the disk, while their side edges are curved, concave, and side edges of adjoining arms are joined without a break in continuity, defining between them an ample concave indentation, whose path is a circumferential arc, and whose radius appreciably coincides with the theoretical radius of the disk, so that a pair of disks attached to a machine equipped with two heads or propeller shaped bases, with said disks angularly offset by 45Â° with respect to each other, in their arrangement on the same plan and in working position, wherein each arm of a disk fits into a curved-concave indentation of the other one, and vice-versa, without touching each other.