Abstract: A free spinning rim assembly is provided which is mountable to a first and second face of a motorcycle wheel including an axle shaft through its axis of rotation. The spinning rim assembly includes a spinner, which rotates about and is positioned circumspect the axle shaft, in proximity to the wheel face. The spinner rotates around the axle shaft at a different angular speed relative to the wheel on which it is mounted. The spinning rim assembly includes a spinning rim having a central bore, which is supported by a friction reducing means positioned in the spinner central bore. The friction reducing means is supported by a retaining means, which is further supported by the wheel hub.

Abstract: A laser communication device for transmitting and receiving information imposed on laser beams. A transmitting unit and a receiving unit are implemented based on atomic line filters. The transmitting unit includes a compact tunable laser locked to a selected atomic transition line. Information may be imposed on a laser beam by modulating the frequency thereof while maintaining its output power substantially unchanged.

Abstract: A portable laser communication transceiver for transmitting and receiving information imposed on laser beams. A communication signal is imposed on a laser beam having a divergence of between 1 degree and 4 degrees. The beam is directed by an operator, sighting through a telescopic viewing device, at a distant transceiver which collects light in the laser beam with a. In preferred embodiments, the transceivers are handheld and each comprises a microphone and earphones allowing operators to talk with each other. Digital information can also be transmitted from personal computers and other electronic information equipment at the location of each operator. In a preferred embodiment useful for military and surveying applications, a GPS, a compass and a laser ranging system is provided. This enables the operator to sight through a binocular to a target and determine its position in longitude, latitude and elevation.