Dry vacuum pump
US6638040B2 · kind B2 · utility
4Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2001 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Dec 31, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2220/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A dry vacuum pump comprises a scroll-type vacuum pump and a rotary-vane vacuum pump, wherein the rotary-vane vacuum pump is mounted on the side of an inlet, whereas the scroll-type vacuum pump is mounted on the side of an outlet, and then a compound-type dry vacuum pump is formed by connecting and integrating the rotary-vane vacuum pump and the scroll-type vacuum pump, having the advantages of high compression ratio, high vacuuming speed, low production cost and simplified structure, thus improving the working effectiveness and quality of pumps accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.