Rail vehicles characterised by rail-engaging elements other than wheels, e.g. balls

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

RAILWAYS

Subclass:

RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES