.~ Guided by surface track or previously formed shoulder
DEFINITION
Classification: 172/26
(under subclass 23) Apparatus comprising a means which is adapted to contact an elongated shoulder or channel on or in the ground in order to guide the apparatus.
(1) Note. See (4) Note of subclass 23 for limitations applicable to this definition.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13, for a lawn edger which may be guided by the edge of a pavement.
SEE OR SEARCH CLASS
37, Excavating, for railway grading apparatus guided by a surface truck.
104, Railways, 244.1, for a vehicle guided by a furrow feeler. The vehicle may be an implement claimed by name only.
171, Unearthing Plants or Buried Objects,
47, for a surface object or ground contour engaging guide means which shifts the unearthing unit bodily with respect to the frame in a generally horizontal plane.
180, Motor Vehicles,
401, for a motor vehicle provided with steering gear which includes a land based steering datum and means on the vehicle for sensing the datum, which means cooperates with a steering motor on the vehicle for the purpose of controlling the course of the vehicle.
280, Land Vehicles,
87.2, for a land vehicle of the wheeled type provided with means whereby one or more of its wheels may be steered by an occupant and wherein the steering means controls also a wheel offset from the principal supporting wheels of the vehicle but which, by its own turning (i.e., pivotable) movement, is able to effect turning movement of certain of the principal wheels; and subclass 776 for a wheeled vehicle of the occupant steered type wherein bias means is provided for maintaining a steerable wheel in engagement with an elongate, more or less vertical surface (e.g., a curb) for a vehicle-steering purpose.
