Patent ID: 7335142

Claim:
A selectorized dumbbell, which comprises: (a) a handle; (b) a plurality of weights that can be nested together forming a nested first stack of weight plates and a nested second stack of weight plates, the first and second stacks of weight plates being separated by a gap that is large enough to accommodate at least a portion of the handle therebetween, wherein each weight comprises a full thickness weight plate from the first stack and a full thickness weight plate from the second stack welded to opposed ends of at least one interconnecting member; (c) a selector movable by a user to allow a desired number of weight plates from each of the first and second stacks to be coupled to either end of the handle when the handle portion is located in the gap between the first and second stacks and the selector is manipulated by the user; and (d) wherein the weight plates of each weight comprise full thickness weight plates, wherein each full thickness weight plate comprises a plurality of partial thickness stamped steel weight subplates that are abutted with one another and welded to one another to form the full thickness weight plate, and wherein the weld that joins each end of the interconnecting member to the full thickness weight plate is the same weld that joins together the partial thickness weight subplates that form the full thickness weight plate.