US Patent 7353572 Snap hook

A snap hook having a hook shank and a gate keeper. The hook shank includes a main body and a hook member. The hook member has a hook bowl and a hook bill with the hook bill and the main body defining a gateway opening therebetween. The gate keeper has an open position and a closed position. When in its closed position the gate keeper encloses the gateway opening and when in its open position the gate keeper allows passage of an object through the gateway opening. The snap hook further includes a first and a second pivot point such that movement of the gate keeper from its closed to its open position requires at least partially rotating the gate keeper about its first pivot point and thereafter at least partially rotating the gate keeper about its second pivot point.