XCITE

Static and Dynamic Force and Torque Excitation Sources in the Nature of Variable Frequency Electrohydraulic Vibrators for Use in Imparting Vibrations of Controlled Amplitude and/or Frequency to Static, Rotating and Reciprocating Structures; Servo-Controllers for Regulating Torque, Force, Velocity, Acceleration, and Displacement of Excited Structures; Hydraulic Power Supplies for Hydraulically-Operated Structure Exciters; Force, Displacement, and Torque Transducers for Transducing into Electrical Signals Force, Displacement and Torque Occuring During the Excitation of a Structure; [Electrical Integrators], [Amplifiers and Phase Shifters for Modifying Electrical Signals in Electrohydraulic Structure-Exciting Systems]; and Hydraulic Accumulators, Hydraulic Filters and Hydraulic Control Valves for Electrohydraulic Structure-Exciting Systems and the Aforementioned Items Sold Primarily as a Complete Unit