A two plane self-balancing centrifuge is disclosed herein in which the centrifuge rotor is driven by a shaft attached to bearings. The bearings are supported by upper and lower flexible bearing mounts. This results in two horizontally flexible bearing mounting planes to provide a greater degree of freedom...http://www.google.fr/patents/US4412831?utm_source=gb-gplus-shareBrevet US4412831 - Two plane self-balancing centrifuge
