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:
Mar. 26, 2002
Filed:
Mar. 12, 1998
Juergen Oelsch, Hohenroth, DE;
Precision Motors Deutsche Minebea GmbH, Villingen-Schwenningen, DE;
Abstract
A drive apparatus for hard disc memories with an integrated labyrinth seal and a motor to drive the rotor cap that has at least one hard memory disc fastened to it. Between a stationary shaft and the rotor cap at least two bearings are arranged which are separated from the space determined for storing the hard memory discs by labyrinth seals. In the design of the labyrinth seals, the rotor cap has in its lower/upper areas radially inwardly-directed annular flanges whose inside radial face forms an upper/lower seal gap of the labyrinth seal in connection with the stationary shaft. A separate upper/lower labyrinth seal is connected solidly to the rotor cap at a distance from the lower/upper seal gap, whose inner radial face forms an upper/lower seal gap in connection with the stationary shaft.