Patent · US Active

Fluid dynamic bearing system

US8613552B2 · kind B2 · utility

1Cited by

3References

16Claims

0Family size

Assignee

Minebea Co., Ltd. · JP

Inventors

Thomas Fuss · Anzing, DE
Martin Engesser · Donaueschingen, DE
Atsushi Yanagawa · Nagano, JP
Werner Schmid · Heidenheim, DE
Carsten Etling · Spaichingen, DE

Key dates

Filing date	Nov 17, 2009
Grant date	Dec 24, 2013
Priority date	—
Expiry date	Jan 12, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C2370/12
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The fluid dynamic bearing system has at least one stationary part, and at least one rotating part that is supported rotatable about a rotational axis with respect to the stationary part. A bearing gap filled with bearing fluid is formed between mutually opposing surfaces of the stationary and of the rotating part. The bearing system includes at least one fluid dynamic radial bearing and at least one fluid dynamic axial bearing that are disposed along sections of the bearing gap. In one aspect of the invention, an annular sealing gap for sealing open ends of the bearing gap has one end connected to the bearing gap and one end connected to an annular reservoir, the outside radius of the reservoir measured from the rotational axis being larger than the outside radius of the sealing gap.

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