Drive spindle assembly for disc file

A disc support platform for a disc recorder of the type utilizing a recording disc having a central opening for receiving a rotary drive means, said support platform comprising:

• a central axial shaft-carrying portion for rotational drive of the platform;
• web portions extending outwardly from said central axial portion;
• a plurality of spaced co-planar disc support portions located on a circular locus and carried near the outer ends of said web portions;
• and air-impelling means carried on said platform for moving a flow of air generally toward or away from the platform as the same is rotatably driven.

A direct-coupled disc drive assembly for disc recorders, comprising:

• a drive spindle comprising a rotary shaft;
• bearing means for rotatably supporting said shaft;
• means mounted on said shaft for rotatably carrying a recording disc;
• a rotor element for an electric motor, said rotor coupled concentrically to said spindle shaft to rotate in unison therewith;
• a motor stator disposed concentrically with said rotor and in close proximity thereto, and means for holding said stator mounted in such position;
• said rotor and stator comprising component parts of a direct-coupled DC motor which rotates said recording disc through said spindle shaft and said disc-carrying means, and said rotor being a thin, flat member and comprising with said stator a generally flat, compact motor of the type known as a "pancake" motor.