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An exercise weight system for providing an adjustable exercise resistance or mass comprises a plurality of individual weights. Each weight includes two spaced plates joined in a rigid manner by at least one interconnecting member. The weights can be nested together in a horizontal weight stack such

An exercise weight system for providing an adjustable exercise resistance or mass comprises a plurality of individual weights. Each weight includes two spaced plates joined in a rigid manner by at least one interconnecting member. The weights can be nested together in a horizontal weight stack such that a connecting pin inserted through the weight stack can select one or more weights for use as the exercise mass. In one embodiment, the interconnecting member is a channel having overlying front and back walls. A plurality of sets of aligned holes and slots are placed in these walls with each set having a uniquely different hole and slot arrangement. The pin can be inserted through any one set of holes and slots to couple a desired number of weights together for use.

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[ We claim:] [1.] An adjustable dumbbell, which comprises:(a) a handle;(b) a plurality of weight plates arranged in two longitudinally spaced apart stacks with each stack having a plurality of weight plates therein; and(c) a single connection member which is selectively movable by the user for simul

[ We claim:] [1.] An adjustable dumbbell, which comprises:(a) a handle;(b) a plurality of weight plates arranged in two longitudinally spaced apart stacks with each stack having a plurality of weight plates therein; and(c) a single connection member which is selectively movable by the user for simultaneously coupling a selected number of weight plates from each stack thereof to the handle.