GEMINI DRIVE

Electric rotary motors, not for the propulsion of land vehicles, each including a rotatable shaft with a mass attachment attached thereto that causes an inertial vibration when the shaft is rotated at a sufficient angular velocity; Mass attachments for a rotatable shaft of an electric rotary motor, not for the propulsion of land vehicles, that, when attached to the rotatable shaft, cause an inertial vibration when the shaft is rotated at a sufficient angular velocity; Devices for generating vibration comprised of electric vibration motors, not for the propulsion of land vehicles, and a controller for driving and controlling the electric vibration motors, sold as a unit

Electronic devices for generating vibration comprising a controller for operating and controlling vibration motors, sold as a unit with vibration motors; Downloadable and recorded software for use in operating and controlling one or more vibration motors; Electronic controllers for operating and controlling one or more vibration motors; Electric vibration motors and arrays of electric vibration motors sold as integral components of computers, computer hardware, computer peripheral devices, touchscreens, touch-enabled user interfaces, game controllers, smart phones, smart watches, mobile and wearable digital electronic devices, and handheld electronic devices; Targets and sensors that are attachable to a rotatable shaft of an electric rotary motor that aid in the measurement of the rotatable shaft's angular position and angular velocity