Patent · US Expired

Precise positioning of media

US7123431B2 · kind B2 · utility

0Cited by

9References

22Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Ruediger Friedrich Berger · Heidesheim, DE
Andreas Heinrich Dietzel · Wallertheim, DE
Thomas Frank · Richmond, US
Volker Heinrich · Nordstemmen, DE

Key dates

Filing date	Jul 29, 2003
Grant date	Oct 17, 2006
Priority date	—
Expiry date	Oct 13, 2024

Classification

Technology area (CPC G)Physics
CPC primaryG11B19/22
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An apparatus for exactly positioning a medium mounted on a spindle is provided, whereby the apparatus comprises a device for continuously changing the angular position of said medium with respect to a predefined reference position by rotating said spindle. Additionally, the apparatus comprises a friction element for braking said spindle at a predetermined position, not allowing a swing back.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.