G - Physics – 11 – B
Patent
G - Physics
11
B
352/24.31
G11B 5/012 (2006.01) G11B 5/016 (2006.01)
Patent
CA 1048147
ABSTRACT OF THE DISCLOSURE The invention herein provides for a bending moment to be induced in the deflected portion of a disk stack by providing a restraint on the outer surface of the outer disk of the deflected portion. The restraint is positioned in non-contacting close juxtaposition to the outer surface prior to insertion of the stack splitter and is positioned approximately 80° to 100° subsequent to the position of the splitter in the direction of disk rotation. The restraint, in a particular embodiment, extends from the outer periphery of the disk inwardly to approximately one-half to two-thirds the radius of the disk and covers an arcuate portion of the disk of approximately 20°. The restraint is most effective when the disk contacting surface is provided with an air- foil shape to facilitate the formation of an air bearing when the outer disk is moved against the restraint. During the separation operation the outer disk is moved into bearing contact with the restraint and since the restraint is positioned only along the perimeter of the disk a bending moment condition is established which causes the outer disk (and the other deflected disks) to buckle between the axial direction of the splitter induced force on the disks and the forces imposed on the disks by the restraint. Typically the outer disk in the device is thicker than the other disks in order to provide a more suitable bear- ing surface.
227707
Mcginnis Bernard W.
Orlando Anthony W.
Weidenhammer James A.
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