Abstract: In a CD storage device, the combination comprising an upstanding post to receive CD's in a stack, and via openings therethrough, a carrier for each CD having circularly spaced retainers to retain the periphery of each CD at spaced locations, an identification zone associated with a retainer, for each CD, and cam surfaces on said carriers for inter-engagement in response to selected CD rotation, for locally elevating the carrier of a selected CD for retrieval off the post.

Abstract: In a CD storage device, the combination comprising an upstanding post to receive CD's in a stack, and via openings therethrough, a carrier for each CD having circularly spaced retainers to retain the periphery of each CD at spaced locations, an identification zone associated with a retainer, for each CD, and cam surfaces on said carriers for inter-engagement in response to selected CD rotation, for locally elevating the carrier of a selected CD for retrieval off the post.

Abstract: A bubble producing device comprising a rotor defining an axis that extends longitudinally, the rotor defining a plurality of through openings spaced about an axis to dip into a bubble solution bath, and to rise above the bath as the rotor rotates; a motor driven fan directed to displace air toward openings above the bath; and a circular series of turbine vanes carried by the rotor and angled to receive air displaced by the fan, for creating torque acting to rotate the rotor.