Internal division actuation of ventilated floppy disk stack

Details Internal division actuation of ventilated floppy disk stack Internal division actuation of ventilated floppy disk stack

G - Physics

11

B

186/9, 352/24.31

G11B 5/82 (2006.01) G11B 5/54 (2006.01) G11B 17/02 (2006.01) G11B 17/32 (2006.01)

Patent

CA 1066409

INTERNAL DIVISION ACTUATION OF VENTILATED FLOPPY DISK STACK ABSTRACT OF THE DISCLOSURE A hollow tubular actuator device operates through an enclosure formed by aligned holes in multiple floppy type storage disks. The disks, separated by interposed ventila- ting spacers, are clamped between inflexible end plates in a closely spaced continually rotating stack assembly. The actuator preferably rotates with the stack and translates axially relative to the disks and spacers. The actuator has a slotted opening for transmitting variable pressure to a selected spacer (address) in the stack and thereby varies the aggregate pressure equilibrium in the stack due to centrifugal air flow. This acts to deflect the orbits of disks peripherally, on either side of the selected address space, forming a gap useful for obtaining external access to otherwise inaccessible storage surfaces adjacent the selected space.

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