US PATENT SUBCLASS 172 / 278
WITH WHEEL STEERING OR ACTUATOR FOR HORIZONTALLY ANGLING WHEEL AXIS

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

278WITH WHEEL STEERING OR ACTUATOR FOR HORIZONTALLY ANGLING WHEEL AXIS {3}
279  DF  .~> Implement part interconnected with motor vehicle steering means {2}
282  DF  .~> Wheel on trailing implement responds to turning movement {3}
286  DF  .~> Wheel on non-propelled device {4}

DEFINITION

Classification: 172/278

(under the class definition) Apparatus comprising (1) an actuating means for moving the axis of rotation of a ground wheel to different positions of adjustment in a horizontal angular direction with respect to the running gear, or (2) means to change the horizontal angular direction of the axis of rotation of a ground wheel mounted on an implement with respect to the running gear in response to articulative movement between the implement and propulsion means for the implement.

(1) Note. The terminology "actuating means" as used above is meant to include "steering" or an "actuator" as defined in the class definition.

(2) Note. There must be some specific description in a claim of the steering means or a specific relationship to the steering means for classification under this definiton; merely calling for a steerable tractor or steerable wheel is not enough.

(3) Note. The "running gear" is the framework most intimately connected with the wheels. It does not include a mere draft tongue. For steering a trailing vehicle by swinging a draft tongue relative to its wheels see subclasses 324+.

(4) Note. Means for changing the direction of a freely swiveling caster by swinging the running gear are not included. There must be some means for positively causing the wheel to turn with respect to its running gear.

SEE OR SEARCH THIS CLASS, SUBCLASS: 23+, for an implement guided by a stationary object, including an implement guided by a feeler element running in a previously made furrow.

256+, especially 257 for steering devices comprising means for swinging an unstable propulsion unit with respect to another unit pivoted thereto on a vertical axis.

383+, for devices in which the axis of a wheel is angularly adjustable but there are not actuating means for making the adjustment.

580, for disk gangs with power means for horizontally angling them.

591+, for disk gangs with handle-operated horizontal angling means.

799, for a vehicle with a scraper between front and rear supports and means for horizontally angling a ground wheel.

SEE OR SEARCH CLASS

104, Railways,

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

180, Motor Vehicles,

6.2+, for vehicles steered by driving and subclasses 400+ for steering gear.

280, Land Vehicles, 6.15+, for a land vehicle of general utility including means, interposed between the vehicle body, chassis, or frame and running gear thereof, for altering height or levelness of the vehicle body, chassis, or frame which may or may not include steering; subclasses 124.11+ for a land vehicle of general utility including a pivotally mounted axle or axle assembly providing resilient, shock absorbing support which may or may not include steering; subclasses 137.5+ for a land vehicle of general utility including a turnable axle lacking resilient, shock absorbing support; subclass 419 for a vehicle train including interconnected steering of the plural articulated vehicles; subclasses 442+ for a vehicle train including steering control of a following vehicle's wheel through articulate movement of the interconnecting draft member; or subclasses 771+ for a land vehicle of general utility including occupant operated steering, especially subclass 87.2 wherein a controlled wheel is offset from the main running gear of the vehicle. With regard to an articulated vehicle or a vehicle train, see the (3) Note in Class 280 definition and the (1) Note in Class 280, subclass 400

definition for a further statement of the class line.