Abstract: A centrifugal force propulsion device is disclosed. The device includes an asymmetrical device enclosure, having a first end wider than a second end. The device includes a magnetically charged mass and a rotating electromagnetic field source encircling the asymmetrical device enclosure, where the asymmetrical device enclosure is accelerated to a high revolutions-per-minute, resulting in a force vector in a direction of the first end of the robotic arm assemblies, and interchangeable robotic arm assembly attachment tools attachable to the attachment end for each of the robotic arm assemblies. The device may include a belt-driven centrifugal force propulsion system including a first pulley coupled to a second pulley by a weighted belt, where the first pulley has a first pulley size greater than a second pulley size and a power source coupled to either of the pulleys to generate a net force vector in the direction of the first pulley.

Abstract: A participant-identification, recording and playback system includes a plurality of radio transmitters, preferably FM transmitters, which are tuned to respectively different center frequencies, and serve as respective wireless microphones assigned to respective participants. A radio receiver which is operatively associated with a recording and playback system is provided to receive signals from all of the wireless microphones, reduce these to a plurality of IF signal and record the same. The playback portion of the system includes a plurality of demodulators which allows one to recover all the audio signals on a selective basis for transcription. Circuitry is provided to identify the speakers and to indicate start and stop times.