Patent ID: 6296601
Filing Date: 2001-10-02
Classification: B26D,B65H,Y10T

Abstract:
A method for distributing wear on a plurality of selectively extendable blades on a rotating member, comprising the steps of:extending a first set of blades on the rotating member, wherein each of the first set of blades are separated from one another by a first distance on the rotating member; andoccasionally retracting the first set of blades and extending a second set of blades, each blade in the second set of blades having a desired spatial relationship relative to a corresponding blade in the first set of blades and each being separated from neighboring blades in the second set of blades by a distance substantially equal to the first distance, thereby distributing blade usage among each of the plurality of selectively extendable blades while maintaining a desired distance between the blades in the first set of blades and the blades in the second set of blades.