Hydrodynamic gas bearing structure
US6428211B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1999 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Oct 25, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C33/101
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydrodynamic gas bearing structure includes a columnar shaft body (1) and a hollow cylindrical bearing body (2) arranged opposing the shaft body (1) with a space (3) maintained in the radial direction therebetween. In a cross section perpendicular to the central axis of the shaft body (1) and the bearing body (2), either the shaft body (1) or the bearing body (2) has a convex polygonal shape with at least ten vertexes. Accordingly, a hydrodynamic gas bearing structure can be obtained in which ½ whirl can be suppressed even at a high speed rotation of 20,000 rpm or higher and run out associated with the rotation can be suppressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.