Roots pump connection channels separating adjacent pump stages
US9476423B2 · kind B2 · utility
0Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2012 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Aug 7, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C25/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A Roots pump comprises a plurality of multi-toothed rotary pumps, each forming a pump stage, and connection channels connecting respective adjacent pump stages. The invention provides that the connection channels are arranged in partitioning walls separating the adjacent pump stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.