Patent ID: 7380341

Claim:
A utility knife comprising a handle and a blade holder, said blade holder being pivotally mounted on said handle for movement from an unfolded position to a folded position, said handle having a space adapted to receive at least a portion of said blade holder when the blade holder is in its folded position, said blade holder having a main wall and a guard wall movable relative to said main wall, means for holding a blade therebetween, and means for maintaining the guard wall adjacent to said main wall, said maintaining means comprises hook means on said guard wall, and lock means on said blade holder adapted to cooperate with said hook means to hold the guard wall in a position over said main wall, said lock means comprises a blade lock assembly mounted on said blade holder, said blade lock assembly comprises a slide lock adapted to be positioned under said hook means and adapted to be moved from under said hook means to release said guard wall for movement relative to said main wall.