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. 18, 2008
Filed:
Mar. 29, 2005
Martin Hafen, Spaichingen, DE;
Joerg Hoffmann, Mettlach, DE;
Andreas Kull, Donaueschingen, DE;
Tobias Kirchmeier, Dunningen, DE;
Rudolf Neumann, Spaichingen, DE;
Thilo Rehm, Villingen-Schwenningen, DE;
Olaf Winterhalter, Epfendorf, DE;
Martin Hafen, Spaichingen, DE;
Joerg Hoffmann, Mettlach, DE;
Andreas Kull, Donaueschingen, DE;
Tobias Kirchmeier, Dunningen, DE;
Rudolf Neumann, Spaichingen, DE;
Thilo Rehm, Villingen-Schwenningen, DE;
Olaf Winterhalter, Epfendorf, DE;
Minebea Co., Ltd., Nagano-ken, JP;
Abstract
The invention relates to a spindle motor having a hydrodynamic bearing system, particularly to drive platters in a hard disk drive, the platters being disposed on a rotor, and the bearing system being formed by a bearing sleeve arranged on a baseplate and a shaft rotatably supported in an opening in the bearing sleeve and at least one thrust plate connected to the shaft. A liquid lubricant is filled into a bearing gap formed between the shaft, the thrust plate and the bearing sleeve. The invention is characterized in that the thrust plate rests directly against the rotor and is accommodated in an annular recess in the bearing sleeve facing the rotor.