US Patent 7469476 Locking device for a folding knife

A folding knife having an improved locking mechanism that keeps the knife in an open extended use position until specific close actions are initiated. The improved locking mechanism provides a safety pin that is secured within the frame elements so as to be positioned between the knife blade and the free end of a locking bar that is spring urged thereagainst imparting improved force transfer locking structure thereto with wear adjustably pivot engagement points of the locking mechanism under spring urged locking engagement.