Head drum assembly for rotating a rotary drum by generating a lo

Details Head drum assembly for rotating a rotary drum by generating a lo Head drum assembly for rotating a rotary drum by generating a lo

1995-12-26

1998-02-17

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head moving during transducing

Tape record

360107, G11B 5027, G11B 553, G11B 2118

Patent

active

057197237

ABSTRACT:
A head drum assembly for use in a VCR includes a rotary drum, a stationary drum, a motor assembly, and a plurality of piezoelectric bearings. The novel head drum assembly allows smooth rotation by using piezoelectric bearings in the appropriate bearing surfaces. In addition, the head assembly eliminates problems present in conventional head assemblies such as irregular rotation due to damaged ball bearings, lubricant contamination of the heads, and manufacturing difficulties due to the use of ball bearings and lubricant.

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