US PATENT SUBCLASS 172 / 332
.~ Tool manipulated with respect to mounting frame

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

329  DF  GUIDED BY WALKING ATTENDANT; SUPPORTED, PROPELLED, OR HELD IN POSITION BY ATTENDANT {7}
332.~ Tool manipulated with respect to mounting frame {5}
333  DF  .~.~> Arched wheel frame (i.e., straddle row, etc.) {9}
345  DF  .~.~> Manipulated about longitudinal axis
346  DF  .~.~> Plural tools independently or oppositely manipulable
347  DF  .~.~> Spring biased
348  DF  .~.~> Vertically manipulated

DEFINITION

Classification: 172/332

(under subclass 329) Apparatus comprising a ground supported (e.g., wheeled) frame, an earth working element movably mounted on the frame and being manipulable and held in the position to which moved by the continued application of force by the attendant to vary its position with respect to the frame.

(1) Note. A mere wheeled axle is not considered a frame under this definition even though the earth working element may be rocked on the axle. However, a wheeled axle having a draft tongue rigid therewith is considered to be a frame under this definition. Some patents which disclose only a wheeled axle have been classified under this definition where they are obviously fragmentary disclosures of that type implement which comprises a wheeled frame of greater extent (e.g., with tongue).

(2) Note. An earth working element about or upon which another earth working element is manipulated is considered a mounting frame.