公开(公告)号：CA1068400A

公开(公告)日：1979-12-18

申请号：CA249501

申请日：1976-04-02

Applicant: IBM

Inventor： GRIFFITHS DONALD E ,  KOESTNER JOSEPH H ,  NORTON DAVID G

IPC: G11B23/03 ,  G11B17/02 ,  G11B17/038 ,  G11B17/32 ,  G11B17/34 ,  G11B23/00 ,  G11B5/016 ,  G11B5/64

Abstract: STACKED FLEXIBLE DISK STRUCTURES Semi-rigid washers are coaxially disposed to form an air-permeable spindle for coaxially supporting flexible record disks. A plurality of such washers and disks is coaxially stacked to construct a flexible disk file. Washers preferably have an annular shoulder with a depth slightly different than the thickness of the record disks for firmly supporting and aligning same in the coaxial stack. Alternatively, disks may be adhesively secured to a radial outward portion of each washer. Additionally, each washer has a plurality of radially extending air passageways for facilitating radial air movement which controls the stack of flexible record disks. A radial inward portion of each washer abuts each adjacent washer for forming a firm axial stack of disks. A rigid stabilizing plate at each axial end completes the assembly. The present invention is an improvement over that shown by Penfold et al in commonly assigned, copending Canadian application Serial Number 211,526 filed October 16, 1974, and entitled "Multiple Flexible Disk File".

公开(公告)号：CA1091363A

公开(公告)日：1980-12-09

申请号：CA310045

申请日：1978-08-25

Applicant: IBM

Inventor： HICKS WILLIAM W ,  KELLER JOHN H ,  KOESTNER JOSEPH H

IPC: G01Q30/10 ,  H01J37/08 ,  H01J37/09 ,  H01J37/317 ,  H01L21/027 ,  H01J3/00

Abstract: RADIATION HEATED ACCELERATION In an ion implantation apparatus, a beam defining member such as the acceleration plate is constructed such that the member is maintained at a temperature above the condensation point of the vapor emanating from the source of charged particles, thereby preventing the vapor from condensing on the member and providing a self-cleaning effect.

公开(公告)号：CA1038492A

公开(公告)日：1978-09-12

申请号：CA225807

申请日：1975-04-23

Applicant: IBM

Inventor： GRIFFITHS DONALD E ,  KOESTNER JOSEPH H ,  NORTON DAVID G

IPC: G11B17/32 ,  G11B5/02 ,  G11B5/55 ,  G11B17/02 ,  G11B17/22 ,  G11B17/30 ,  G11B21/02 ,  G11B25/04 ,  G11B5/82 ,  G11B5/54

Abstract: STACKED FLEXIBLE RECORD DISK STORAGE APPARATUS HAVING ENHANCED DISK SEPARATION USING A PRIMARY BENDING MODE IN A STACK OF DISKS A signal storage apparatus employs a stack of circular record disks accessible by axially separating segments of selected disks in the stack. One disk in a stack of coaxial rotatable circular compliant record disks is accessed with a minimum energy imparted to such disks by a chord roll disk separator. In a preferred form, the chord roll disk separator induces a primary bending mode to some of the disks being axially separated. In another aspect of the disclosure, a signal transducer is mounted integrally with the disk separator. With such mounting, primary, secondary, or higher order bending modes may be successfully employed. Full chordal and partial chordal axial disk separations are described. Arcuate and radially directed separation techniques may be employed. A unique axial stacking arrangement for compliant record disks is also described.

公开(公告)号：CA1038491A

公开(公告)日：1978-09-12

申请号：CA225806

申请日：1975-04-23

Applicant: IBM

Inventor： GRIFFITHS DONALD E ,  KOESTNER JOSEPH H ,  NORTON DAVID G

IPC: G11B17/32 ,  G11B5/02 ,  G11B5/55 ,  G11B17/02 ,  G11B17/22 ,  G11B17/30 ,  G11B21/02 ,  G11B25/04 ,  G11B5/82 ,  G11B5/54

Abstract: STACKED FLEXIBLE RECORD DISK STORAGE APPARATUS HAVING ENHANCED DISK SEPARATION WITH TRANSDUCER MOUNTED IN DISK SEPARATOR A signal storage apparatus employs a stack of circular record disks accessible by axially separating segments of selected disks in the stack. One disk in a stack of coaxial rotatable circular compliant record disks is accessed with a minimum energy imparted to such disks by a chord roll disk separator. In a preferred form, the chord roll disk separator induces a primary bending mode to some of the disks being axially separated. In another aspect of the disclosure, a signal transducer is mounted integrally with the disk separator. With such mounting, primary, secondary, or higher order bending modes may be successfully employed. Full chordal and partial chordal axial disk separations are described. Arcuate and radially directed separation techniques may be employed. A unique axial stacking arrangement for compliant record disks is also described.

公开(公告)号：FR2275845A1

公开(公告)日：1976-01-16

申请号：FR7515090

申请日：1975-05-06

Applicant: IBM

Inventor： GRIFFITHS DONALD E ,  KOESTNER JOSEPH H ,  NORTON DAVID G

IPC: G11B17/32 ,  G11B5/02 ,  G11B5/55 ,  G11B17/02 ,  G11B17/22 ,  G11B17/30 ,  G11B21/02 ,  G11B25/04 ,  G11B5/82