(under subclass 185) Apparatus comprising either (a) one or more endless members having traction enhancing portions thereon, or (b) an endless member made up of a plurality of parts at least some of which having traction enhancing portions thereon, the member or members closely surrounding the tire about its periphery.
(1) Note. A tire having a track or tread member as either an integral part thereof or otherwise being rigidly connected thereto even though separable therefrom is not deemed proper for classification here. Such devices are found in other subclasses in Class 152, especially subclasses 170+.
