US Patent 8490796 Probe card container with rollers

A probe card container having a main case consisting of upper and lower case portions for storing therein a prove card, a handle provided on one side surface of the main case, one or more members for preventing the movement of the main case provided on a mounting surface of the main case, and one or more rollers for assisting the movement of the main case provided on the mounting surface or a corner formed between the mounting surface and the other side surface of the main case so as to project obliquely downward from the corner.