Abstract: The transducer support assembly includes a transducer secured to a U-shaped strap having a pair of chest engageable leg portions connected integrally to a curved neck engageable portion by a pair of twisted intermediate portions for engaging the body of the user. The chest engageable leg portions are adapted to fit over the shoulders and to lie substantially flat against the chest of the user. A wide portion of the neck engageable portion extends in overlying substantially continuous engagement with the neck or back of the user to resist the chest engageable leg portions from swinging away from the chest. A gripping material forms an underside surface of the strap to frictionally engage the user, thereby inhibiting the strap from moving relative to the body of the user. Another transducer support assembly includes a flexible U-shaped neck support having a chest engageable portion.

Abstract: A wireless optical short-range communication system adapted for use as an intercom system. The system can be used in fast food restaurants and similar commercial institutions. The communication system includes a base station to interconnect via optical communication a group of substantially similar physically spaced-apart, remote units. Each one of the remote units and the base units includes an optical emitter to transmit an optical message-carrying beam to the base station, and an optical receptor to receive an optical message-carrying beam from the base station. The base station includes a receptor for receiving the optical beam transmitted by the optical emitters of all of the remote units, and an optical emitter to relay the received optical beam to the optical receptors of all the remote units.