US PATENT SUBCLASS 172 / 46
.~ Coaxial tools oppositely rotated

Current as of: June, 1999
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172 /   HD   EARTH WORKING

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
46.~ Coaxial tools oppositely rotated

DEFINITION

Classification: 172/46

(under subclass 35) Apparatus in which two or more earth working elements are journaled in a frame for movement in circular paths about a common axis of rotation, the drive

means for such earth working elements being so arranged that said elements rotate in reverse directions relative to each other.