(under the class definition) Device wherein the work holder has a means (such as a wheel) thereon for contacting a fixed surface beneath the work holder (such as a floor or the ground) and whose disclosed purpose is to enable the work holder to be moved on the surface, in any desired direction, from one place to another.
(1) Note. A patent claiming a vehicle and not claiming a work holder will be found in the class of the vehicle regardless of whether a work holder is disclosed. See Class 180, Motor Vehicles, and Class 280, Land Vehicles.