US Patent 8104393 Charging handle

The invention relates to a charging handle assembly for a firearm. The assembly includes a handle mechanism having a pull rod to engage an action of a firearm, a handle and a stop surface. A latch mechanism is rotationally secured to the handle and is meant to be manually activated. When the latch mechanism is moved to an open position, a surface of the latch mechanism contacts the stop surface of the handle mechanism. A spring mechanism is used to maintain the latch mechanism in a closed position.