Patent ID: 8607460
Filing Date: 2013-12-17
Classification: B26B

Abstract:
1. A single spring arm assisted knife comprising: a base frame includes a first end; a blade includes a first end pivotally retained on said first end of said base frame, a cam assist surface is formed on an edge of said first end of said blade; a spring arm includes a first end and a second end, said second end of said spring arm is retained by said base frame, a thickness of a cross section of said spring arm is equal to or greater than the greatest width of said spring arm over substantially all of a length of said spring arm, wherein said blade is partially opened to receive opening assistance from said spring arm; and a roller is pivotally retained on said first end of said spring arm, said roller contacting said cam assist surface, wherein said roller is pivotally supported on only one end by said spring arm, said spring arm is offset relative to said blade.