(under subclass 215.1) Truck for including wheel means for riding on a rail and including wheel means for riding on a planar surface, generally.
(1) Note. A truck including a single wheel particularly adapted to ride on a (1) rail or (2) planar surface is included in this subclass.
(2) Note. The railway wheel may ride on a rail at the same time that the other wheel rides on a planar surface.
(3) Note. The planar surface engaging wheel of this subclass may be driven.
SEE OR SEARCH THIS CLASS, SUBCLASS:
72.2, for a locomotive including a land engaging wheel and a rail engaging wheel wherein the rail engage wheel is driven, or wherein the land engaging wheel is driven to propel the locomotive along the rail.