Patent ID: 6875161

Claim:
A weight lifting exercise device comprising: a bar having opposed end portions; each end portion having a polygonal shape; a threaded bore formed in each end portion; a weight plate adapted to be mounted to an end portion of the bar; the weight plate including a through bore extending through the weight plate and including a first outer section that assumes a polygonal shape for receiving the polygonal shaped end portion of the bar, a second outer section that forms a bolt head recess, and an intermediate section; a bolt having a shank for connecting the weight plate to one end portion of the bar; and wherein when the weight plate is connected to one end portion of the bar, the bolt extends through the through bore of the weight plate such that a portion of the bolt is threaded within the threaded bore of the end portion of the bar which is in turn disposed inside of the polygonal shaped first outer section of the through bore of the weight plate, and wherein the bolt head is recessed within the second outer section while the shank extends from the bolt head through the intermediate section of the through bore of the weight plate.