US PATENT SUBCLASS 172 / 63
.~ With non-driven tool (e.g., plow, harrow, drag, scraper, knife or roll, etc.)

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

35  DF  WITH DRIVE MEANS FOR TOOL OR CLEANER {37}
63.~ With non-driven tool (e.g., plow, harrow, drag, scraper, knife or roll, etc.) {8}
64  DF  .~.~> Non-driven furrow opener and driven dam former
65  DF  .~.~> Interdigitating non-driven and driven tools
66  DF  .~.~> Cooperating driven cleaner or comminutor and contiguous tool
67  DF  .~.~> Driven comminutor at outlet of earth guide
68  DF  .~.~> Rolling tool {1}
70  DF  .~.~> Fore-and-aft non-driven tool
71  DF  .~.~> Non-driven tool follows path of driven tool {1}
73  DF  .~.~> Staggered driven and non-driven tool (e.g., cotton chopper, etc.)

DEFINITION

Classification: 172/63

(under subclass 35) Apparatus which have a plurality of earth working elements, one of said elements being driven by a power driven means while another of said elements is not connected to said drive.

(1) Note. The nondriven earth working element may be fixed relative to the driven element (such as a plow, harrow, drag, scraper or knife) or may be a rolling earth working element such as a disk or roller.

(2) Note. The nondriven earth working element may be a ground contacting part or portion of a hood or shield for a driven earth working element provided such part or portion is specifically designed to work the earth; e.g., hoods with scraping, leveling, or smoothing blades or edges and hoods with depending crust breaking teeth are included under this definition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

33, for the combination of a nondriven plow with a power operated moldboard adapted to remove the furrow turned by the plow.

80, for driven earth working elements combined with wheel substitutes, i.e., runners or other ground contacting supporting means other than wheels, which perform no substantial earth working function.

133+, for a plurality of nondriven earth working elements which are different one from the other.

SEE OR SEARCH CLASS

171, Unearthing Plants or Buried Objects,

24, for unearthing devices with comminuting or multiple cutting of recovered plant.