US Patent 7165329 Folding knife with safety device

The present invention is to provide a folding knife comprising a flat member within a handle thereof, the flat member comprising a latch having an open end proximate a pivot pin of a blade on the handle, the latch including a projection on its one surface, the projection being adapted to be pressed by a sliding block so as to allow the latch to exert a downward force onto the blade wherein a sliding movement of the slide is adapted to cause the sliding block to compress a resilient member toward a rear end of the handle for disengaging the sliding block from the projection and for pivoting the blade either out of or into the groove.