Browse Prior Art Database

End Restraint for Multi Disk Deflection

IP.com Disclosure Number: IPCOM000081840D
Original Publication Date: 1974-Aug-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Barbeau, RA: AUTHOR [+2]

Abstract

In a laminar file of multiple flexible disks, rotating at high speed about a common axis, access to individual disk surfaces is obtained by deflecting the disks apart at a selected interface. The energy required to part the disks, and therefore the potential wearing contact upon the disks, can be reduced by providing end restraint at one end of the file in a small area approximately 90 degrees removed from the plane of operation of the selecting mechanism. Adapting the end restraint to form continuous air bearing relative to the adjacent disk, and to swivel in all directions as the disks deflect, further enhances and facilitates deflection.

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End Restraint for Multi Disk Deflection

In a laminar file of multiple flexible disks, rotating at high speed about a common axis, access to individual disk surfaces is obtained by deflecting the disks apart at a selected interface. The energy required to part the disks, and therefore the potential wearing contact upon the disks, can be reduced by providing end restraint at one end of the file in a small area approximately 90 degrees removed from the plane of operation of the selecting mechanism. Adapting the end restraint to form continuous air bearing relative to the adjacent disk, and to swivel in all directions as the disks deflect, further enhances and facilitates deflection.

As shown in Fig. A, restraining element 1 is flat in the center for a certain diameter 2 and has a blending radius 3 to outside diameter 4. The unit is saucer shaped 5 and pivots around ball bearing 6 in any direction. Bearing 6 is captured in retainer 7 and the unit is balanced against gravity by collar 8. Ball shaft 9 supports the whole structure.

Referring to Fig. B, as splitter blade 10 is inserted between the disks, the shape of the surface of revolution at the area of restraint 11 changes continuously. During and after blade entrance the swiveling support and bearing surface of the restraint follow the changing disk surface shape, assuming proper angles to meet changing conditions and providing hydrodynamic lubrication at all angles. At blade withdrawal the device does not require...