Patent ID: 8790052

Claim:
A bolt on drive assembly for a core drill comprising: a cylindrical tube having a cutting edge at one longitudinal end and an open end at an opposite longitudinal end; a mounting means mounted at said open end; a high strength spoked reinforcer, said spoked reinforcer having a center hub from which extends a plurality of spoked members, wherein the center hub has a hub central axis extending in a direction of a Z-axis and wherein the spoked members have respective central axes wherein a spoked member central axis does not intersect the hub central axis, said spoked members having respective strengthening members extending perpendicularly therefrom in the direction of the Z-axis and wherein said spoked members being attached to said mounting means; a disc mounted onto said high strength spoked reinforcer and also onto said mounting means; a drive connection centrally mounted on said disc, said drive connection adapted to connect to a drive shaft to cause rotation of said tube; and a series of removable fasteners to secure said disc and said high strength spoked reinforcer to said mounting means.