US PATENT SUBCLASS 172 / 394
.~ Disk type tool


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

387  DF  WITH WHEEL SUBSTITUTE (E.G., RUNNER, ETC.) {6}
394.~ Disk type tool


DEFINITION

Classification: 172/394

(under subclass 387) Apparatus in which the earth working element comprises a circular platelike member which is given a rotating motion by the resistance of the earth as it is drawn thereover.

(1) Note. The circular platelike member may be plane, convex or concave in cross-section.