(under subclass 400) Devices in which the draft connection between the articulated vehicles includes at least one joint which may be adjusted to constitute either a rigid or a movable connection during operation of the vehicles.
SEE OR SEARCH THIS CLASS, SUBCLASS:
445, for articulated vehicles having a draft member which is pivoted to one of the vehicles to steer the wheels thereof upon pivoting and wherein the draft member may be locked
against pivoting.
448, for a connection between articulated vehicles where the type of articulation is modified in response to a change of direction of stress in the draft connection.
478.1+, for a draft member which is releasable from a normally fixed position on a vehicle to facilitate connection to another vehicle and then returned to its initial position.
