Rotary head drum apparatus comprising resilient electrical conne

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record

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Details

360107, 360 84, 36013022, G11B 552, G11B 1560

Patent

active

050104322

ABSTRACT:
In a rotary head drum apparatus having a magnetic head attached to a rotary drum member and connected to a coil of a rotor of a rotary transformer so that a signal is transmitted between the magnetic head and a stationary drum member through the rotary transformer, a resilient contactor is mounted on one of the rotary drum member and the rotor of the rotary transformer, and a contact portion is formed on the other of the rotor and the rotary drum member so as to be contacted by the resilient contactor when the rotary drum and the rotary transformer are assembled with each other. The apparatus further includes an aperture bored through an end face of the stationary drum member and a ground contact pin which is flexible in its radial direction is inserted into the aperture for connecting the stationary drum member to ground. Further, the rotary or stationary drum member is rotatably supported through a support shaft secured in a bore of the stationary or rotary drum member, respectively, and at least one concave or undercut annulus is formed in the inner surface of the bore into which the support shaft is inserted with a press-fit so as to be secured to the inner surface of the bore at its lands or portions above and below the concave or undercut annulus.

REFERENCES:
patent: 4740848 (1988-04-01), Schild et al.
patent: 4835645 (1989-05-01), Ohji et al.

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