Patent ID: 7958801
Filing Date: 2011-06-14
Classification: B06B,B64C,F03G,F03H,F16F,Y10T

Abstract:
1. A force generator comprising: a rotationally fixed first circular member defined about a first axis to define a first inner diameter circular path, said first circular member having a first radius; a second circular member defined about a second axis offset from said first axis to define a second radius; a crank which mounts said second circular member, said crank rotatable about said first axis; a mass located adjacent a circumference of said second circular member movable about a two-cusp hypocycloid path to generate a vibratory inertial force; a processor; a sensor system in communication with said processor; and a power source which drives said crank, said processor controls said power source to drive said crank such that a phase and magnitude of the vibratory inertial force is continuously varied to reduce an externally generated vibratory force sensed by said sensor system.