Patent ID: 6595267
Filing Date: 2003-07-22
Classification: B22D,F16B,Y10T

Abstract:
A tumbling unit such as a casting shake-out unit, rotary media drum, sand reclaimer or the like, the tumbling unit comprising:a cylindrical outer shell; a cylindrical liner positioned within said outer shell, said liner being formed of a series of interfitting segments, said segments having an inner surface, an outer surface, side edges, a front edge, a back edge, and a vane extending from said outer surface to said cylindrical outer shell; the side edges of the segments having a groove formed therein and extending the length of said side edges, the grooves of neighboring segments defining channel between neighboring segments; and an elongate retaining pin received in said channel to urge adjacent segments apart to form a tight interfit among the segments in a row of said liner, said retaining pin including a body having side surfaces, a top surface, and a bottom surface; at least one opening in said pin body extending through said pin body from one side of said pin body to another side of said pin body and at least one dowel received in said at least one hole and sized to extend through said hole and beyond the sides of said body; said dowel being shaped and sized to be received in the grooves of the adjacent segments; and an arm extending upwardly from said pin body top surface; said pin separating adjacent liner segments, said pin arm conforming in shape to, and being in alignment with, the vanes of the adjacent segments, to form a continuous vane on said liner.