A water bath shaker having a water bath, a vessel-mounting shelf and a triple-eccentric drive, whereby the shelf is subjected to orbital gyratory motion via a drive shaft consisting of a single post that extends into the center of the bath via a standpipe. The drive shaft also acts as a mount that can...http://www.google.es/patents/US5052812?utm_source=gb-gplus-sharePatente US5052812 - Bath shaker
