Pressure seal for a vacuum pump
US6572351B2 · kind B2 · utility
12Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2002 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Apr 18, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/70
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The invention concerns a vacuum pump consisting in the assembly of two stator half-shells (101, 102) and two directly mounted end parts (31, 32) with an interposed single-piece continuous pressure seal (33). The pressure seal (33) comprises two annular end parts (34, 35) generally parallel to each other and connected by two side-members (36, 37) which are generally perpendicular thereto. Thus, the number of components to be assembled to produce an multistage dry vacuum pump is reduced, while providing satisfactory impermeability to outside atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.