Patent · US Expired

Driving mechanism for magnetic hard disc

US4604665A · kind A · utility

57Cited by

7References

14Claims

0Family size

Assignee

Papst Motoren GmbH & Co KG · DE

Inventors

Rolf Muller · St. Georgen, DE
Dieter Elsasser · St. Georgen, DE
Johann von der Heide · Winterthur, CH
Georg Papst · Spaichingen, DE

Key dates

Filing date	Nov 10, 1982
Grant date	Aug 5, 1986
Priority date	—
Expiry date	Nov 10, 2002

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2211/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A driving mechanism for magnetic hard disc memories includes an isolated space for maximum cleanness from the remainder of the apparatus, a driving motor mounted within the apparatus and having a stator and a rotor, the motor when energized having parts producing magnetic flux, a hub extending into the space of maximum cleanness for receiving therein at least one magnetic hard memory disc, a connection between the motor and the hub for driving the hub, and a magnetic flux shield located between the parts producing the magnetic flux and the space of maximum cleanness.

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