Abstract: A cover assembly for a vehicle bed includes a first pair of track members mountable to side walls of the bed. A cover unit includes a second-pair of track members and a plurality of support members movably mounted on the second pair of track members. A cover is mounted to the support members. The cover unit is to be removably mounted in an operative position to the bed with the second pair of track members aligned with the first pair of track members so that the support members can move along the first and second pairs of track members to extend and retract the cover. At least one motor is connected to the support members for selectively moving them. At least one fastener secures the cover unit in the operative position and is releasable to allow the cover unit to be removed from the bed.

Abstract: In an omni-directional sound system such as a sound-light combination arrangement having at least one loudspeaker and optionally at least one light source, a bass loudspeaker arrangement includes a cylindrical casing having end walls at which are installed a bass loudspeaker and an insert casing respectively. The insert casing forms one or more bass reflection spaces within the casing. A sound deflection cone is arranged with its tip opposite the bass loudspeaker.