Dynamic pressure seal device and rotary joint device using the same
US6726215B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2002 |
| Grant date | Apr 27, 2004 |
| Priority date | — |
| Expiry date | Aug 6, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2322/39
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Disclosed are a dynamic pressure seal device and a rotary joint device using the same which are applicable to a rotary body to be rotated at high speed and which are capable of effecting delivery of a target fluid between a rotary side member and a stationary side member without involving any leakage for a long period of time even when used for delivery of a high pressure fluid. The dynamic pressure seal device includes: a stationary side member mounted to a stationary portion and a rotary side member mounted to a rotary body, wherein the stationary side member and the rotary side member are opposed to each other through the intermediation of a predetermined bearing gap, a lubricant fluid being introduced into the gap to form a dynamic pressure bearing, the gap between the stationary portion and the rotary body being hermetically sealed by this dynamic pressure bearing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.