(under subclass 167.1) Structure including active apparatus for producing counteractive accelerations in the mass of the building or in the mass of the apparatus which tends to nullify the effects of an earthquake.
(1) Note. Moving weights, sloshing liquids, pendulums, and eccentrically weighted flywheels are some examples of apparatus appropriate for inclusion in this subclass.
SEE OR SEARCH CLASS
248, Supports,
559, for general purpose moving weights which may be part of a vibration dampening means or attenuation system.
