(under the class definition) Device the mass of which is distributed in such a manner as to cause the device or a portion thereof to return to a particular attitude after it has been tilted from that attitude.
SEE OR SEARCH THIS CLASS, SUBCLASS:
228+, for a toy comprising a balanced portion suspended for travel below a guide or support.
273+, for a self-righting wheeled figure toy.
315, for a figure toy balanced upon a flaccid element for movement therewith or therealong.