Patent Document ID: 9017229
Application ID: 13226743
Patent Flag: 1

Claim One:
1. A training device for attachment to a resistance training device, including: a ball having an external surface surrounding an interior volume of compliant material; an elongate shaft having a connector at a first, proximal end thereof and a second, distal end disposed inside of the ball within the compliant material; and a split washer disposed around the shaft inside of the ball, the split washer being in intimate contact with the compliant material, the split washer having an inner radius and an outer radius and defining an axial gap between first and second free ends of the split washer circumferentially spaced apart when disposed around the shaft, wherein the first end of the washer is laterally displaced along the shaft from the second end to define the axial gap between the first end and the second end when the split washer is disposed around the shaft.