Patent ID: 8863393
Filing Date: 2014-10-21
Classification: B26B

Abstract:
1. A folding knife with two-stage lock release, comprising: a blade; a pivot; a handle including a first plate, a second plate and a third plate, wherein a position proximate to an end of the blade is pivotally coupled to a position between the first plate and the second plate and proximate to an end of the handle by the pivot, the second plate has a locking hole formed on the second plate and an elastic stop plate installed thereon, a first end of the elastic stop plate is fixed to the second plate, and a second end of the elastic stop plate is extended slantingly towards the first plate; such that, when the blade is turned out from the handle completely, the second end of the elastic stop plate abuts the end of the blade; and a positioning plate movably positioned between the second plate and the third plate, and corresponding to the elastic stop plate, wherein a first end of the positioning plate is extended out of the handle, a position restoring spring is installed between a second end of the positioning plate and the second plate or the third plate, the positioning plate has a locking portion disposed thereon, and an end of the locking portion is extended towards the second plate; such that, when the blade is unfolded completely and a force is applied to move the positioning plate and compress the position restoring spring, the locking portion is moved to a position corresponding to the locking hole and extended into the locking hole to set the positioning plate to a first-stage release state in order to separate a protrusion of the positioning plate from a latch with the elastic stop plate, and the elastic stop plate is then separated from the end of the blade by a force to set the blade to a second-stage release state in order to turn and fold the blade into the handle.