Patent ID: 7886444
Filing Date: 2011-02-15
Classification: B26B

Abstract:
1. A foldable knife, comprising: a handle having a receiving space; a blade having an end pivotally connected to an end of the handle by a pivot, wherein the blade can be rotated out of the handle or received in the receiving space of the handle in relation to the pivot, and a side surface of the blade is formed with an engaging portion; a spring mounted on the pivot, wherein the spring has two ends connected to the handle and the blade respectively, so that the spring applies a torque to the blade to rotate the blade out of the handle; a blocking element formed in the handle, wherein when the blade has sprung completely out of the handle, and an edge of the blocking element is engaged with an edge of the blade, so as to prevent the blade from being rotated and received in the handle; when the blocking element is forced and moved away from an engaged position where the edge of the blocking element is engaged with the edge of the blade, the blade is released for being rotated and can be completely received in the handle; and a side surface of the blocking element is formed with a positioning portion which is engaged with the engaging portion, when the blade is completely received in the handle, for allowing the blade to be stably received and positioned in the handle; and a poking element pivotally connected to an inside of the handle, wherein a first end of the poking element is extended out from the handle to a position outside a rotating range of the blade and is formed with a protruding poking portion, and a second end of the poking element is formed with a pressing portion which presses onto the blade when the blade is completely received in the handle, thereby, when the protruding poking portion is poked by a user, the pressing portion exerts a force to the blade to overcome an engagement force between the positioning portion and the engaging portion and in turn to enable the blade to be completely and automatically turned out from the handle by the torque of the spring.