Patent ID: 7854067
Filing Date: 2010-12-21
Classification: B26B

Abstract:
1. A low friction folding knife, comprising: a blade having a distal end and a tang, the tang having an outer edge and a finger cam extending from the outer edge, the tang having a thickness with a slot disposed in the thickness, a roller cam rotatably attached in the slot by a keeper pin inserted perpendicular to the slot and the roller cam extending slightly outside the slot; a handle having a first outer handle parallel and attached to a first liner, a spring cavity and a safety cavity extending through the first liner, a second outer handle parallel and attached to a second liner, the first liner and the second liner spaced apart and parallel creating a blade slot for receiving the blade when the folding knife is closed, the blade being pivotally coupled to the handle with a pivot bolt; a safety washer fixedly attached to the tang and adjacent to the first liner, the safety washer having a closed safety engagement notch on the perimeter; a safety assembly having a safety engagement end and disposed within the first outer handle and held in place within the safety assembly cavity in the first liner, the safety assembly having a safety stud extending through a safety slot disposed in the first outer handle for moving the safety assembly between a safe position and a safe off position; and a bias element disposed between the first liner and the second liner, the bias element having a spring distal end and a spring attach end, the spring distal end in spring communication with the roller cam on the tang, the spring attach end is fixedly attached between the first liner and the second liner; wherein, the safety assembly in the safe position forces the safety engagement end into the closed safety engagement notch on the safety washer thereby preventing opening, the safety assembly in the safe off position retracts the safety engagement end from the closed safety engagement notch allowing opening of the blade, with pressure applied to the finger cam on the tang of the blade to rotate the blade out of the blade slot, the spring distal end of the bias element applies spring force on the roller cam thereby forcing the blade open.