Pivotal-arm device for a disc scanning unit

Details Pivotal-arm device for a disc scanning unit Pivotal-arm device for a disc scanning unit

1985-07-19

1987-07-07

Stephan, Steven L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specified detail of transducer assembly support structure

G11B 310, G11B 332

Patent

active

046791850

ABSTRACT:
A pivotal-arm device (15) for a disc scanning unit (13) for recording and/or reading information comprises a deck plate (3A), a pivotal arm (25) carrying the scanning unit, and pivotal-arm bearing means. The pivotal arm bearing means comprise two bearings disposed on opposite sides of the pivotal arm, at least one of the bearings comprising two bearing members (31, 33), a spherical bearing element, which cooperates with these bearing members, and a viscous medium. At least one of the bearing members has a concave bearing surface (33A), between which bearing surface and the bearing element a gap (35) is formed, which gap widens towards the edge of said bearing surface and which contains said viscous medium. A resilient element (39), which is secured to the deck plate, urges the bearings towards one another.

REFERENCES:
patent: 4403316 (1983-09-01), van der Veerdonk

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