Patent ID: 7676932
Filing Date: 2010-03-16
Classification: B26B

Abstract:
1. A folding knife comprising: a. a liner having a first side, a second side, an open top leading to a pocket, a bottom, a first end, a second end, and a medial section therebetween; b. a blade having a pointed end and a base end, said base end pivotally secured to said second end of the liner such that said blade is capable of pivoting between a closed position wherein said blade is received within said pocket and an open position wherein said blade pivots out of said pocket through said open top and extends outwardly from said second end of the liner; c. a guide pin projecting outward from said base end of said blade and through said first side of said liner; d. a spring arm having a base, a tip, a top surface facing in the direction of said open top of said liner, and an apex in said top surface proximal said tip; said spring arm secured to said liner by said base of said spring arm and said tip extending toward said second end of said liner; said spring arm positioned between said bottom of said pocket and said guide pin on said blade; e. a blade lock having a first end, a second end, a medial section therebetween, and a tongue proximal said first end of said blade lock protruding towards said open top of said liner; said blade lock secured to said liner proximal said bottom of said liner by a pivot joint between said first end and said second end of said blade lock; f. wherein said spring arm supplies a closing force on said guide pin when said blade is in said closed position, said closing force resisting the articulation of said blade from said closed position to said open position; g. wherein said spring arm supplies an opening force on said guide pin after said blade passes a first equilibrium position during articulation of said blade from said closed position to said open position, said opening force assisting the articulation of said blade from said first equilibrium position to said open position; and h. wherein said blade lock exerts a resisting force opposing articulation of said blade to a completely open position, such that a second equilibrium position is achieved before said blade is articulated to said completely open position.