US PATENT SUBCLASS 172 / 120
.~.~ Disk or planar cutter (e.g., saw, etc.)

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
118  DF  .~ Tool driven about axis transverse to draft line {5}
120.~.~ Disk or planar cutter (e.g., saw, etc.)

DEFINITION

Classification: 172/120

(under subclass 118) Apparatus in which an earth working element which is driven about an axis extending transversely to the direction of travel is in the form of a generally circular member which may be either flat or dished.

SEE OR SEARCH THIS CLASS, SUBCLASS:

55, for plural groups of driven disks.

518+, for rolling, rotating, or orbitally moving disc or planar cutter-type tools.