Patent ID: 6836967
Filing Date: 2005-01-04
Classification: B26B

Abstract:
1. A folding knife comprising; a handle, the handle including a notch on an upper edge thereof; a blade attached to the handle, the blade being pivotally movable about a pivot axis provided in the handle, the blade being movable between a folded position in which the blade is received within the handle and an open position in which the blade extends out of the handle, the blade including a tang positioned in the handle when the blade is in the open position; a cam surface provided on a peripheral edge of the tang, the cam surface including a substantially arcuate guiding portion extending about the pivot axis and an engaging portion extending continuously from one end of the guiding portion; a guide member fixed to the handle in the notch, the guide member having a guiding axis extending in a longitudinal direction of the handle; a tubular lock member supported on the guide member and being movable along the guiding axis with respect to the guide member, the lock member including an axis extending along the guiding axis, the lock member being movable between a lock position in which the lock member engages the engaging portion to lock the blade in the open position and an unlock position in which the lock member is separated from the engaging portion to allow the blade to move from the open position; and a bias member for biasing the lock member in the direction from the unlock position toward the lock position, the bias member acting to move the lock member toward the lock position so as to lock the blade with respect to the handle when the blade is in the open position.