(under the class definition) Apparatus comprising means for retarding the motion of or stopping the apparatus either by friction or by positive engagement of elements.
SEE OR SEARCH CLASS
180, Motor Vehicles,
6.7, for a motor vehicle provided with a flexible track which
is steered by braking the track on one side or the other of the vehicle.
188, Brakes, appropriate subclasses for brakes, per se, or a brake combined with a nominally claimed wheel substitute.
