Dynamic pressure type fluid bearing device
US4557610A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 1984 |
| Grant date | Dec 10, 1985 |
| Priority date | — |
| Expiry date | May 1, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C35/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A dynamic pressure type fluid bearing device including a housing having a bearing hole, a shaft rotatably provided in this bearing hole, and a thrust bearing member attached to an end of the housing, wherein a groove is provided in either the shaft or the bearing hole, another groove is provided in the contacting surface between the thrust bearing member and the shaft, a ventilation flute to communicate with the atmosphere is provided in the contacting surface between the thrust bearing member and the housing, and a lubricant is charged around the groove, so that the lubricant is prevented from flowing out due to changes in the atmospheric pressure or environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.