The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 1987
Filed:
Aug. 21, 1985
Dieter Elsasser, St. Georgen, DE;
Bernhard Schuh, St. Georgen, DE;
Papst-Motoren GmbH & Co. K.G., St. Georgen, DE;
Abstract
Disk storage drive for receiving at least one storage disk provided with a central opening. The disk drive is provided with an outer rotor type driving motor having a rotor casing mounted by means of a shaft in a bearing system so as to rotate relative to a stator and receive the storage disk. The stator includes magnetically active parts. At least that part of the rotor casing receiving the storage disk is made from a non-ferromagnetic material and carries the shaft either directly or by means of a hub. A shield made from a ferromagnetic material is provided as an inner part of the rotor casing. The shield envelopes the circumference and one end of the magnetically active parts of the driving motor. The outer diameter of the rotor casing is smaller than the central opening of the storage disk.