Spacer means on floppy disks and associated techniques

Claim 1

In a method for providing for the selective pneumatic partitioning of a stack of co-rotatable flexible recording disks, this method including: stacking said flexible disks together with intermediate radially-venting spacer means so as to form a disk pack, with the inner periphery of the disks retained together so as to define a center-bore, and the pack being adapted to engage high speed rotation means and also being arranged to be pneumatically parted between any selected pair of adjacent disks; introducing axially-translatable pneumatic partition-jet means into said bore; and partitioning said pack by rotating it sufficient to induce a prescribed pumping between said disks, and positioning said jet means so as to direct one or more jet streams radially out through the spacer means defining the separation site; the improvement therewith of: forming each said spacer means by adhering a spacer disk, including an annular peripheral array of identical separate spacer fingers on each disk adjacent disk center and thereafter removing all spacer disk portions except the fingers.

Claim 5

A method of providing novel spacer means between recording disks stacked in a pack comprising the steps, for forming each disk, of: bonding a spacer disk on the respective recording disk, concentric therewith, the spacer disk being peripherally indented to form identical peripheral finger portions; the cutting-away of the center portion of spacer disk to leave only said finger portions bonded on the disk.

Claim 6

A method of providing novel spacer means between recording disks stacked in a pack comprising the steps, for forming each disk, of: bonding a spacer disk on the respective recording disk, concentric therewith, the spacer disk being peripherally indented to form identical peripheral finger portions; the cutting-away of the center portion of spacer disk to leave only said finger portions bonded on the disk.