US PATENT SUBCLASS 172 / 68
.~.~ Rolling tool

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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.~.~ Rolling tool {1}
69  DF  .~.~.~> With tool drive from rolling tool

DEFINITION

Classification: 172/68

(under subclass 63) Apparatus in which the driven earth working element is associated with a nondriven earth working element which is freely journaled on a support in a manner to contact the ground and to be rotated by the resistance thereof as the latter element traverses a field.

(1) Note. Said nondriven earth working element may be a disk, roller or toothed drum but a rolling member disclosed as a mere support is excluded.