US PATENT SUBCLASS 83 / 873
.~.~.~ Plural independent rotary blades

Current as of: June, 1999
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83 /   HD   CUTTING

861  DF  OTHER THAN COMPLETELY THROUGH WORK THICKNESS OR THROUGH WORK PRESENTED {6}
870  DF  .~ Splitting {3}
872  DF  .~.~ By use of rotary blade {1}
873.~.~.~ Plural independent rotary blades

DEFINITION

Classification: 83/873

Plural independent rotary blades:

(under subclass 872) Method or apparatus comprising use of a first cutting tool that is generally planar and circular in shape, adapted to rotate about an axis normal to the planar surface of the tool during cutting, including a cutting edge extending generally about the circular perimeter; and use of a second cutting tool that is also generally planar and

circular in shape, adapted to rotate about an axis normal to the planar surface thereof during cutting, including a cutting edge extending generally about the circular perimeter.