US Patent 7546822 Switching finger follower assembly

A two-step finger follower rocker arm assembly comprising a follower body having a first end for engaging the engine and a second end for engaging a valve stem of the gas valve. The follower body has a passage formed in the body between the first and second ends and has a first bore traversing the passage. A central follower is positioned in the passage and is configured for engagement with the central lobe. A first lateral follower is pivotally supported on a shaft extending through the first bore and is configured to engage the at least one lateral cam lobe. A latching mechanism is positioned on the follower body for selectively latching the lateral follower to the body.