Abstract: A balance board including a standing platform connected to a pivot ball. The standing platform provides an area for a subject to stand and can be moved by a set of deflector actuators. The deflector actuators can move the platform in both the lateral and vertical directions. A braking assembly is connected to the ball and the braking assembly increases or decreases rotation resistance to the ball. When resistance is increased to the ball, resistance to rotation for the platform is increased.

Abstract: A balance board including a standing platform connected to a pivot ball. The standing platform provides an area for a subject to stand and can be moved by a set of deflector actuators. The deflector actuators can move the platform in both the lateral and vertical directions. A braking assembly is connected to the ball and the braking assembly increases or decreases rotation resistance to the ball. When resistance is increased to the ball, resistance to rotation for the platform is increased.

Abstract: A passive transponder which provides remote identification of objects including cargo and trailers, vehicles or a variety of objects which move through an interrogator beam. The passive transponder is mounted onto the vehicle or object or at the location to be identified. A transmitted beam from the interrogator is directed to the transponder. Some of the beam's energy is rectified and used to power digital electronic circuitry within the transponder which generates a signal with a serially-coded digital waveform. This signal amplitude modulates a harmonic generator in the transponder which produces and emits harmonic energy derived from the incident beam from the interrogator. This harmonic energy is readily identified by an interrogator receiver which is tuned to that harmonic of the incident signal. The transponder information from the interrogator receiver is decoded in the interrogator data processor to provide the desired identification number.