Patent ID: 7600322

Claim:
A folding knife, comprising: a handle having a first pivot passing through a first end of the handle; a blade pivotally coupled to the handle by the first pivot at a first end of the blade away from a knife tip, the blade having a first latch portion disposed at a back of the blade at a position proximate to the first pivot; a latch element pivotally coupled to the handle by a second pivot, the latch element having a first end extending to a position corresponding to the first latch portion and a second end extending towards a second end of the handle; a resilient element having a first end fixed in the handle and a second end pressing against the second end of the latch element such that when the blade is extended completely out from the handle the first end of the latch element latches the first latch portion; and a turning element pivotally coupled to the handle by a third pivot, the turning element having a first end which presses the second end of the latch element such that when the blade is extended completely out from the handle and a force is exerted on a second end of the turning element to push the second end of the latch element, the first end of the latch element is separated from the first latch portion to release the blade, and the blade can be movably stored into the handle.