Abstract: The present invention provides a display rack including a plurality of slidable channel trays, so that each of the channel trays can be slid out of the display case at the time of refilling new articles behind the old articles. A display rack comprises a plurality of display rack modules wherein a display rack module comprises a channel base secured on wire shelves of a display case and a channel tray which is mounted slidably on the channel base. Slidable mounting means comprises a pair of guide grooves and a pair of guide rails to be slidably engaged with the guide grooves, wherein one pair are extended downwardly from the bottom surface of the channel tray and the other pair are extended upwardly from the upper surface of the channel base. Stopper means to limit the traveling distance of the channel tray from the channel base and to secure the channel tray on the channel base in refilling mode are also provided.

Abstract: A magnetic slide device which can move a movable body in a sealed interior space by magnetic attraction between a magnet fixture attached on the movable body and a operational handle having a magnet(s) located outside of the sealed interior space. Further, a magnetic on/off switching means which comprises a turning handle mounted rotatably in a housing, provides a doorknob to be used as the turning handle of the magnetic slide device. The magnetic slide device and the on/off switching means are applicable to a magnetic slide-typed window or glass door blind system that could make slim the sealed double pane window or glass door having a internal blind therebetween and does not need the outer mechanical or electrical connection for actuating the internal blind, so that the internal blind can be maintained cleanly within the sealed window or glass door assembly during the use.