Sharpening device

Details Sharpening device Sharpening device

2005-04-05

2005-04-05

Rachuba, M. (Department: 3723)

Abrading

Machine

Rotary tool

C451S261000, C451S266000, C451S293000, C451S349000, C451S359000

Reexamination Certificate

active

06875093

ABSTRACT:
A sharpener includes a motor driven shaft with at least one slidably mounted sharpening assembly consisting of a supporting hub structure mounted by its central bore hole on the shaft. The hub structure supports a symmetrically shaped rotating surface containing an ultra fine abrasive material. The rotating surface is pressed with a force of less than 0.2 lb. by a spring action to make sustained rotating abrading contact with a facet of a knife positioned by a knife guide to align the facet into contact with the surface containing the abrasive materials.

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Grit Size Comparison Chart, http://www.cs.rochester.edu/roche/rec.wood.misc/grit.sizes.

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