Patent ID: 7517305

Claim:
A weight plate, comprising: a plate body having first and second sides and defining a central opening therethrough, the second side being substantially flat, the plate body defining a handle opening through the plate body; a raised lip positioned on the first side and about a periphery of the plate body, a portion of the raised lip adjacent the handle opening forming a handle on the weight plate, an interlock recess defined behind the handle on the second side of the plate body, the interlock recess having first and second stop edges; and at least one interlock protrusion positioned on the raised lip and protruding away from the first side of the plate body, the at least one interlock protrusion having first and second terminal ends, the first and second terminal ends being engageable with first and second stop edges of another interlock recess defined in another weight plate to prevent substantial rotation of the weight plates relative to one another when positioned together.