US PATENT SUBCLASS 171 / 93
.~.~ Rolling or coaxial with traction wheel

Current as of: June, 1999
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171 /   HD   UNEARTHING PLANTS OR BURIED OBJECTS

84  DF  SEPARATING DIGGER (E.G., VERTICAL COLLECTING TINES) {7}
86  DF  .~ Movable on supporting frame (e.g., pivoted) {11}
93.~.~ Rolling or coaxial with traction wheel

DEFINITION

Classification: 171/93

(under subclass 86) Apparatus in which (1) the digger is continuously moved through a closed path by contact with the earth as the apparatus traverses a field, or (2) the digger is mounted on a supporting frame and has at least one axis which is coaxial with a ground-contacting driving wheel.

SEE OR SEARCH THIS CLASS, SUBCLASS:

112, and 125, for rolling separators and elevators, respectively.

SEE OR SEARCH CLASS

172, Earth Working,

518+, for rolling earth working tools.