Mechanism for controlling the displacement of a positioner cone

Details Mechanism for controlling the displacement of a positioner cone Mechanism for controlling the displacement of a positioner cone

1981-05-04

1983-11-01

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 97, G11B 5016, G11B 1702, G11B 2504

Patent

active

044132948

ABSTRACT:
A positioning system for floppy disc recording media utilizes a tapered positioner cone mounted on a gimballed structure at the free end of a pivotable support assembly. Straight line, non-tilted entry of the cone into the disc aperture is provided in combination with the gimbal mounting by positive guiding of the axis and attitude of the cone in the entry region. The mechanism for supporting the cone comprises a pivotted assembly incorporating a movable position control with an overtravel guide surface. Movement of a control element first causes pivotting of the assembly to lower the positioner cone relative to the floppy disc. Upon engagement, however, the guide surface and pivot relationship are such that further movement of the control element compresses the positioner cone under a spring force, utilized that the clamping force is controlled and the clamping action is stable until the control element is shifted to release the positioner cone from the floppy disc.

REFERENCES:
patent: 3940793 (1976-02-01), Bleiman
patent: 4040106 (1977-08-01), Medley
patent: 4125883 (1978-11-01), Rolph
patent: 4171531 (1979-10-01), Grapes et al.
patent: 4177491 (1979-12-01), Jann
patent: 4216510 (1980-08-01), Manzke et al.
IBM TDB, J. J. Holecek et al., Loading Collet for Flexible Magnetic Disks, vol. 21, No. 1, Jun. 1978, pp. 291-292.

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