MULTIPLE GROOVED VACUUM COUPLING

摘要

The present invention relates to a coupling system (10) to releasably clamp a cylindrical target (12) to a spindle (14) by means of an interface ring (22) and a clamping ring (26), whereby the interface ring (22) and the cylindrical target (12) have engaging surfaces comprising two or more circular grooves (18). In another embodiment the clamping ring and the interface ring are the same piece. The advantage of the present coupling system is that it allows a square fitting and avoids high mechanical stresses.