Patent ID: 7305946

Claim:
A variable valve operating apparatus for variably operating an engine valve of an internal combustion engine, the variable valve operating apparatus comprising: a drive cam configured to receive input torque from a crankshaft of the engine; a rocker cam pivotally supported on a first pivot; a lift varying mechanism operative to change a pivotal position of the rocker cam to vary a valve lift of the engine valve, while transmitting the input torque from the drive cam to the rocker cam; a swing arm including one end portion at which the swing arm is pivotally supported on a second pivot and the other end portion contacted with the engine valve; a hollow space defined between the one end portion of the swing arm and the other end portion thereof; and a driven roller rotatably disposed within the hollow space of the swing arm and contacted with a cam surface of the rocker cam, wherein when the valve lift of the engine valve is a predetermined lift amount or more, a contact point between the driven roller and the rocker cam is located in the hollow space of the swing arm.