A device employing frictionless bearings including a mass of superconductor material having a superconducting temperature Tc above about 77° K, magnet having an axis of symmetry being levitated from said mass of superconductor material so as to be rotatable about its axis of symmetry, and a support member attached to the magnet. The support member is driven so as to cause the magnet to rotate about its axis of symmetry. It also includes a frictionless commutator where a signal beam is intermittently interrupted by a member attached to the magnet, the support member being driven so as to cause the magnet to rotate about its axis of symmetry.
The University of Arkansas (Little Rock, AR)
Weeks, David E. II, "Drive system employing frictionless bearings including superconducting matter" (1991). Patents Granted. 251.