Patent attributes
A weight apparatus includes a bar including a handle rotatably attached to an anchorage. The anchorage includes a body and at least one radially extendable and retractable pin, the pin being movable relative to the body between an innermost position and an outermost position. An end of the pm extends radially beyond an external surface of the body when the pm is in the outermost position. The apparatus further includes a weight including a weight opening in which the anchorage is adapted to be received. The weight includes a radially extending pin opening adapted to receive the pin when the pm is in the outermost position to attach the weight to the anchorage. An arrangement is provided for driving the pm to the outermost position upon rotation of the handle relative to the anchorage.