US PATENT SUBCLASS 172 / 387
WITH WHEEL SUBSTITUTE (E.G., RUNNER, ETC.)

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

387WITH WHEEL SUBSTITUTE (E.G., RUNNER, ETC.) {6}
388  DF  .~> With wheel
389  DF  .~> Spring tooth implement {1}
391  DF  .~> Spike tooth implement
392  DF  .~> Plural runner supported implements relatively movable during operation
393  DF  .~> Spaced parallel runners with tool mounted therebetween
394  DF  .~> Disk type tool

DEFINITION

Classification: 172/387

(under the class definition) Apparatus comprising a means such as a runner or track member which is adapted to support the apparatus for movement over the ground and which has the same general relation to the apparatus as a supporting ground wheel would have.

(1) Note. Earth working elements mounted on a frame which frame may incidentally be in ground contact to act as a runner or depth gauge and is not specifically modified to act as a runner are not classified under this definition, but are classified below according to the earth working element or arrangement being claimed. See subclasses 634+, for example. A mere curving of the foward portion of the frame is not considered to be a modification under this definition.

(2) Note. Runners which have earth working elements attached to the runners by means of a nonearth working or contacting support or bracket so that the tool is spaced laterally or rearwardly of the runners are included under this definition. This definition does not include, however, runners which are so closely associated with an earth working element as to, in effect, form a unitary portion of the earth working element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

80, for an implement comprising a driven tool and a wheel substitute.

188, for diverse tools attached to a runner rearward of the forward end thereof.

360, for hand guided or propelled implements provided with runners. 665, for apparatus comprising an actuator for relatively movable earth-engaging parts of an earth working element, one of said parts being a runner.

738, for an earth working element having relatively adjustable earth-engaging parts, one being a runner.

764, for an earth working element and a separate runner.

783, for a scraper mounted between front and rear ground supports of a vehicle, the scraper having a runner attached thereto.

SEE OR SEARCH CLASS

104, Railways,

244.1, for furrow followers for guiding a vehicle along the furrow.

171, Unearthing Plants or Buried Objects,

140, for an unearthing unit provided with a gage runner or wheel.

280, Land Vehicles,

8+, 841+, and 845+ for runners for vehicles, including a runner which may have an earth-penetrating part to prevent lateral sway. 305, Wheel Substitutes for Land Vehicles, appropriate subclasses for wheel substitutes other than runners.