Gas laser apparatus
US5291509A · kind A · utility
11Cited by
1References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1992 |
| Grant date | Mar 1, 1994 |
| Priority date | — |
| Expiry date | Jul 9, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/43
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A gas laser apparatus in which a gas medium in a case and a lubricant for bearings supporting a blower for circulating the gas medium are isolated from each other, so that the lubricant can be prevented from mixing into the gas medium while no substantially large resistance is applied to the blower drive. To isolate the gas medium and the lubricant, magnetic fluid shaft seals (10, 11) are used for sealing between the lubricant for the bearings (6) for supporting rotation shafts (3a, 3b) of the blower (3) and the gas medium in the case (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.