US PATENT SUBCLASS 171 / 50
EXTRACTOR

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

50EXTRACTOR {5}
51  DF  .~> With agitator for extractor or extractor-carried object
52  DF  .~> With movable stripper
53  DF  .~> Plant impaling or snagging (e.g., roots or tops) {1}
55  DF  .~> Opposed plant engagers {5}
62  DF  .~> With digger or root cutter

DEFINITION

Classification: 171/50

(under the class definition) Apparatus which comprise means for individually holding either (1) an underground portion of a growing plant or buried object, or (2) an above ground portion of a plant extending through the earth's surface and lifting it without any substantial disturbance of the soil and without any substantial relative motion between the holding means and the plant or object.

(1) Note. Those devices which dig plants by merely supporting them and not grasping or holding them are excluded. For example devices having spaced tines to dig and separate objects from the soil are excluded and classified herebelow as diggers if the objects merely rest on the tines.

(2) Note. This and the indented subclasses provide for the holding and lifting (i.e. extractor) subcombinations, per se, and also for combinations of said subcombinations with a plow or other preliminary digging means.

(3) Note. Included in this and the indented subclasses are means to remove plants from the earth by pulling on the foliage or stalks. See also (5) Note of the class definition.

SEE OR SEARCH CLASS

254, Implements or Apparatus for Applying Pushing or Pulling Force, 199+, for implements or apparatus for extracting stumps or poles.

294, Handling: Hand and Hoist-Line Implements, for manually supported grappling implements for pulling out objects embedded in the soil.