Automatic record loading player
Disc cartridge for cleaning an objective lens
Disc holder for a rigid audio and/or video disc
Disc information reproducing apparatus
Disk drive lock
Height position adjusting device for a reproducing transducer in
Holder for discs of different diameters
Leveling device and method for record playing turntables
Optical information processing apparatus and cleaning cartridge
Shutter and bi-stable actuating member protection device for hea
Signal-pickup cartridge for a rotary recording medium reproducin
Video disc player having carriage locking mechanism