| 摘要 |
A folding knife with cam actuated opening and closing assistance preferably includes a pivoting blade, a biasing spacer, a front liner and a rear liner. A cam surface is formed on one end of the pivoting blade and a cutting edge is formed along at least one side of the pivoting blade. The cam surface preferably starts with a radius that gradually increases into a larger radius. One end of the pivoting blade is pivotally retained by at least one of the liners. Substantially one end of the biasing spacer is retained between the first and second liners and substantially the other end exerts force on the cam surface. The shape of the cam surface is designed to rotate the pivot blade relative to the liners, when force is applied through the biasing spacer. The biasing portion assists the opening and closing of the pivoting blade.
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