Patent ID: 7789813
Filing Date: 2010-09-07
Classification: A63B

Abstract:
1. A dumbbell comprising: a bar that extends generally axially between opposing end regions, a weight plate mass mounted about the bar at each end region, means for retaining the mounted weight plate mass at the respective end regions to define a handle region axially inward of the end regions that can be gripped by a user during exercise movement of the dumbbell, a sleeve member of generally annular cross-section securely mounted about the bar at at least one end region axially outward from the weight plate, said sleeve member having (a) a hub portion for accommodating the through-opening of a generally annular incremental weight plate, and (b) a flange portion of greater exterior dimension than the hub portion and having at least one magnetically-responsive region for securing an incremental weight via magnetic force to the dumbbell when said incremental weight plate is mounted about said hub region, said hub portion extending from the flange portion axially outward of the weight plate mass to accommodate the through-opening of the incremental weight plate, and means securing said sleeve member to the bar.