(under subclass 5.1) Wheel particularly adapted to use on a roller skate.
(1) Note. A roller skate wheel combined with a bearing is included in this subclass.
SEE OR SEARCH CLASS
16, Miscellaneous Hardware,
45+, for a wheel particularly adapted to use on a caster.
152, Resilient Tires and Wheels, for a tire or wheel under that class definition which might be used on a roller skate. 384, Bearings, for a skate bearing, per se.