Platform having at least one transducer for reading from and/or

Details Platform having at least one transducer for reading from and/or Platform having at least one transducer for reading from and/or

1979-04-30

1981-03-24

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 560, G11B 1732

Patent

active

042584000

ABSTRACT:
A platform for supporting at least one magnetic transducer for reading from and/or recording on a data carrier. The platform is supported from a carrier arm adapted to position the platform over the data carrier which may be a multi-track disc. The magnetic transducer is supported in the lower face of the main body of the platform. The lower face includes a plurality of skids and one or more grooves which receive a rigid strut for suspending the platform over the carrier. The strut is secured in the groove(s) with the plane of the strut passing through the center of gravity of the platform. The strut may be secured to a frame surrounding the platform which in turn may be secured to a further concentric frame also surrounding the platform. The strut includes a constriction located at the virtual axis of rotation or axis of oscillation of the platform and at which point the cross-sectional area of the strut is at a minimum. The axis of symmetry of the constriction lies in a direction perpendicular to the major dimension of the strut and coincides with the virtual axis of rotation or axis of oscillation such that the sum of the bending moment of the constriction and the moment of the pressure forces exerted on the lower face of the main body is zero.

REFERENCES:
patent: 3990106 (1976-11-01), Kameyama et al.

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