Telescopic slide with intermediate element - has two opposite U=shaped elements in which free roller moves between stops

摘要

The telescopic slide has an outer element (3), an inner sliding element (1) and an intermediate element (2). A free roller (8) moves in the intermediate element between stops (21,22). The intermediate element is shaped like two U-shapes with their openings opposite each other. One of these has lateral parallel walls in which the roller fits with slight play. The other U shape has an opening narrower than the rolling surface of the roller. The slot between the longitudinal edges of the lateral walls is narrower than the dia. of the roller to prevent its escape.