Abstract: A safe, hygienic and effective device for caring for the interior of the mouth is presented. The system includes easily interchangeable accessories for a brushing device that allows it to function also as a polisher, washer, massager/stimulator, oral irrigator, oral syringe, lubricator, and protector of the teeth and gums. In the example presented, water-driven motors housed inside flexible material formed so that it is capable of fitting comfortably inside the human mouth drive heads in an up-and-down or rotating motion that brush or polish or massage/stimulate or irrigate the interior and exterior of all teeth, top and bottom, and gums, simultaneously, while also supplying fresh-water lubrication and paste or polish or mouthwash or the like and also removing exhaust fluids and exhaust substances from the mouth by a vacuum/suction or pressure or gravity action.

Abstract: A light beam concentrating, intensifying and filtering device for use in combination with a parallel ray light source is comprised of a frame having a plurality of shutter leaves capable of opening and closing an aperature when actuated. Each shutter leaf is comprised of a colourless or coloured transparent portion and a portion that is coated on its inner surface with a reflective material.

Abstract: A plastic information and signalling device having a cross-sectional triangular configuration which is adapted to hang over a partially opened vehicle window to communicate to observers the desired information or signal. The device has pockets into which information and signalling signs may be inserted to visibly display the message on these signs. The device is collapsable into a rectangular shape for convenient storage.