US PATENT SUBCLASS 172 / 318
.~ Actuator on vehicle moves implement ground support vertically relative to implement frame

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

317  DF  ACTUATOR ON VEHICLE FOR RELATIVELY MOVING PARTS OF TRAILING IMPLEMENT {2}
318.~ Actuator on vehicle moves implement ground support vertically relative to implement frame {1}
319  DF  .~.~> Interconnected means for moving hitch

DEFINITION

Classification: 172/318

(under subclass 317) Apparatus comprising an actuator carried on the vehicle and connected to an implement so that movement of the actuator causes some relatively vertical motion to occur between the implement wheel, or wheel substitute, and the frame of the implement which carries said wheel.

(1) Note. For the meaning of "actuator" see the class definition.

(2) Note. The actuator must apply some positive force to the wheel axle. Merely lifting the implement frame and thereby dropping the wheel due to a lost motion connection is not included. See subclass 321 for such apparatus.

SEE OR SEARCH THIS CLASS, SUBCLASS:

238, for apparatus in which a wheel is moved vertically with respect to its running gear in response to the draft load.

293+, for devices of this nature in which the wheels are sequentially operated by a power cycle.

SEE OR SEARCH CLASS 280, Land Vehicles,

407, for articulated vehicles wherein the load of a trailer on a leading vehicle is adjusted by adjusting the point of application of draft to the leading vehicle, and subclass

414.5 for articulated vehicles having an actuator for vertically moving a wheel of a trailing vehicle.