Patent · US Expired

Disk storage device having a spindle driving motor

US5945751A · kind A · utility

12Cited by

25References

25Claims

0Family size

Assignee

Papst Licensing GmbH · DE

Inventors

Helmut Hans · St. Georgen, DE
Jurgen Oelsch · Bad Neustadt an der Saale, DE

Key dates

Filing date	Jun 7, 1995
Grant date	Aug 31, 1999
Priority date	—
Expiry date	Jun 7, 2015

Classification

Technology area (CPC H)Electricity
CPC primaryH02K1/187
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a spindle driving motor, in particular an external rotor motor, the main components of which are accommodated in the interior of a driving hub (4) or the back iron (5). According to the invention, in order to minimize the number of joints, both ball bearings (11, 12) are arranged directly, yet correctly as far as assembly is concerned, between the fixed shaft (10) and the back iron (5), a collar (15) having a larger diameter serving in particular to this end.

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