US PATENT SUBCLASS 172 / 69
.~.~.~ With tool drive from rolling tool

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
63  DF  .~ With non-driven tool (e.g., plow, harrow, drag, scraper, knife or roll, etc.) {8}
68  DF  .~.~ Rolling tool {1}
69.~.~.~ With tool drive from rolling tool

DEFINITION

Classification: 172/69

(under subclass 68) Apparatus in which the driven earth working element is actuated by a power transmission means other than a mere rigid or articulated shaft which means is interposed between the driven earth working element and the rolling earth working element in such manner that in the disclosed use of the device the flow of power is always from the rolling earth working element to the driven earth working element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

520, for rolling tools which are on different axes and in mutual driving relationship.