Stator assembly for a turbomolecular pump
US5158426A · kind A · utility
13Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 1991 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Feb 15, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/655
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a stator assembly for a turbomolecular pump, each stator is assembled from two semicircular portions mutually aligned and secured in place by tongue and grooves means, each such stator including a plurality of radially directed blades connecting an inner circular edge and outer circular edge of the stator, such edges occupying respective parallel displaced planes. The outer edge of each stator includes regularly outward projected tabs which bear between spacer rings to maintain axial alignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.