US PATENT SUBCLASS 172 / 110
.~ Tool driven about generally vertical axis (e.g., oscillating choppers, etc.)

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
110.~ Tool driven about generally vertical axis (e.g., oscillating choppers, etc.) {1}
111  DF  .~.~> Rotary driven tool

DEFINITION

Classification: 172/110

(under subclass 35) Apparatus in which an earth working element is driven about an axis which is generally perpendicularly disposed relative to the ground.

(1) Note. This subclass includes those earth working elements which oscillate about a vertical axis.

SEE OR SEARCH THIS CLASS, SUBCLASS:

48+, especially subclass 59, for a plurality of tools each of which is provided with a separate individual drive means for causing the same to move about a vertical axis.

522+, for nondriven tools of the rolling, rotating, or orbitally moving type which move about a vertical axis.

SEE OR SEARCH CLASS 299, Mining or In Situ Disintegration of Hard Material,

41.1, for a floor working hard material disintegrating machine driving a substantially vertical axis cutter.