Patent ID: 8337281

Claim:
A universal blade holder operable to be rotatably driven by a blade-sharpening drive having an adjustable blade sharpener, said universal blade holder configured to securely hold any one of multiple variously sized circular blades while being sharpened by the adjustable blade sharpener, wherein each of the circular blades includes drive teeth disposed in an annular arrangement, said universal blade holder comprising: a blade-receiving chassis operable to be rotated by the drive and rotatable about a rotation axis of the blade holder, said blade-receiving chassis including a plurality of radially spaced blade-retaining sections each associated with a respective one of the circular blades, each blade-retaining section including at least a partial ring of positioning teeth projecting from the chassis and being configured to intermesh with the drive teeth of the respective one of the circular blades, thereby restricting rotational and off-axis movement of the respective one of the circular blades relative to the chassis.