.~ Tool changeable to or replaced by ground support
DEFINITION
Classification: 172/243
(under subclass 240) Apparatus in which a wheel or wheel substitute replaces an earth working element or is attached directly to an earth working element or in which an earth working element is manipulated to act as a wheel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
535, for a detachable rim for a disk, the rim being used for an earth working function, e.g., a packing roller rather than as a ground wheel.
540+, for a rolling or rotating earth working element having spaced teeth, tines, or blades which may be made by placing such teeth on a wheel.
SEE OR SEARCH CLASS
301, Land Vehicles: Wheels and Axles,
38.1+, for wheels useable with ordinary wheels for emergency purposes.
