Patent ID: 7827697

Claim:
A low friction folding knife, comprising: a blade having a distal end and a tang opposite the distal end, the tang having a thickness with a slot disposed in the thickness, a roller cam rotatably attached in the slot by a keeper pin and extending slightly outside of the slot; a handle having a first outer handle and a second outer handle spaced apart and parallel creating a blade slot for receiving the blade when the folding knife is folded to a closed position, the blade being pivotally attached to the handle at the tang with a pivot bolt; a safety assembly disposed within the first outer handle adjacent to the blade slot having a safety stud extending through a safety slot in the first outer handle, the safety stud enables movement of the safety assembly by a user between a safe position and a safe off position; and an adjustable bias element disposed between the first outer handle and the second outer handle, the adjustable bias element configured to assist the folding knife to an open position, the adjustable bias element having an adjustment end and a spring distal end, the spring distal end is in spring communication with the roller cam on the tang, the adjustment end having a screw adjustment that extends and retracts the spring distal end; wherein, the safety assembly in the safe position forces the safety assembly against the tang of the blade preventing opening of the blade, the spring distal end of the adjustable bias element when extended applies an opening pressure to the roller cam thereby automatically opening the blade when the safety assembly is in the safe off position, the spring distal end when retracted applies the opening pressure to the roller cam and assists the blade to the open position only after the user initiates opening by pulling the blade slightly from the blade slot.