Abstract: A folding knife includes a handle, a pivot axle, a knife blade, a spring and a catch mechanism. The handle has an elongate opening and the pivot axle is adjacent one end of the handle. The knife blade has a tang at one end thereof that is pivotally mounted to the handle for pivotal movement about the pivot axle. The spring is at least partially fitted within the handle and fitted about the pivot axle for urging the knife blade from a closed position toward an open position. The catch mechanism releasably secured the knife blade at or near its closed position despite the urging of the spring.