(under the class definition) Device comprising a first part which either (1) contacts and moves smoothly along the surface of a second part, or (2) constrains translational movement of a second part moving therealong.
SEE OR SEARCH THIS CLASS, SUBCLASS:
13, for a sliding retractable coin slot or guard on a toy money box.
127, for construction toy elements which are joined together by laterally sliding the elements.
135+, for a magnetic element and means for guiding its path over a surface over which it is caused to slide.