(under subclass 423.1) Devices in which there is provided means to prevent excessive horizontal angular swing or overriding of the trailer with respect to the tractor or means to prevent separation of the tractor and trailer in the event that the coupling means should fail.
SEE OR SEARCH THIS CLASS, SUBCLASS:
457, for auxiliary safety connections which act to prevent separation of the vehicles in case of failure of the primary connection and wherein the vehicles are not of the semitrailer type.
SEE OR SEARCH CLASS
188, Brakes,
112, and 142 for trains of vehicles in which the brakes of the rear vehicle are applied by the tendency of the rear vehicle to override the leading vehicle.
