(under subclass 518) Apparatus comprising a wheel, other than a traction wheel forming a normal part of a self-propelled vehicle.
(1) Note. For classification under this definition a claim
must positively refer to a wheel or some structure which necessarily implies a wheel. A reference in a claim to a frame which might or might not carry a wheel is not enough even though the frame is disclosed as carrying a wheel.
SEE OR SEARCH THIS CLASS, SUBCLASS:
395+, for rolling or rotating earth working elements associated with wheels which are vertically adjustable with respect to their running gear.
440+, for angled gangs of earth working elements liftable as a unit with the mast of a mast-type hitch.
454+, for angled gangs of earth working elements liftable as a unit for transport on a wheeled frame by means other than a mast-type hitch.
