US PATENT SUBCLASS 172 / 458
.~ Vertical movement interrelated with another

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

452  DF  WITH ACTUATOR ADAPTED TO LIFT TOOL FOR TRANSPORT ON WHEELED FRAME OR BROADLY CLAIMED IMPLEMENT {37}
458.~ Vertical movement interrelated with another

DEFINITION

Classification: 172/458

(under subclass 452) Apparatus wherein the earth working element, when moved up and down in a vertical plane by the actuator, is forced to undergo a movement in another plane, such as lateral tilting or lateral shifting.

(1) Note. Devices in which the movements of the earth working element are a result of a simple pivoting motion about a single axis or a canted pivot axis are not included.

SEE OR SEARCH THIS CLASS, SUBCLASS:

445, for tools carried by mast-type hitch having a means operated by vertical hitch movement.