The present apparatus includes a rotating table which is loaded with removable carriers, each of which holds a substrate to be coated. The carriers are advanced to a loading position and are pushed from the table thereat into a hollow cylinder. Each carrier has a pair of O-rings on its periphery which...http://www.google.de/patents/US4808291?utm_source=gb-gplus-sharePatent US4808291 - Apparatus for coating compact disks
