Abstract: An access system based on piezo-electric transducer assembly or electro-optic device light beam deflector assembly which on application of electric signals deflects light beams, which are then passed through total internally reflecting surfaces to increase the separation between beams, is described. The light beams fall on large area information storage surface, such as optical disk or magnetic disk, for the purpose of reading and writing. The access time to the information is very fast. The nature of the reflected light from the memory surface is detected to read the digital signals stored on the surface as is conventionally done in the art. Except for the small friction-free movements of the piezo-electric transducers there are no moving parts for access to the storage surface. Instead of the memory surface a screen may be placed when tthe light beams can be used after large separation to form a fast display.

Abstract: A mechanical power transmission assembly which uses an electro-magnetic system with internal electrical feedback to obtain the desired torque speed characteristics at the load shaft is presented. The assembly comprises of two coaxial magnetic rotating parts having an air gap between them with one part capable of rotating over the other at different speeds. One of the rotors is connected to the driving engine and the other rotor to the load shaft. The magnetic parts house electrical windings which are connected to each other through means such as commutators or slip rings and brushes allowing direct or alternating currents, as desired, to circulate in the windings and with means for controlling the currents in them. The assembly system is capable of being used for a variety of purposes besides mechanical power transmission, such as for staffing the engine and supplying electrical power.