Rotary vacuum pump with a rotor end groove
US11168691B2 · kind B2 · utility
0Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 2016 |
| Grant date | Nov 9, 2021 |
| Priority date | — |
| Expiry date | Mar 10, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/54
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A rotary vacuum pump includes a housing defining a pump chamber therein and a rotor extending through a first axial end panel into the pump chamber and carrying at least one vane for rotary movement of the vane within the pump chamber. The rotor comprises an annular axial end face configured to seal against a corresponding contact surface of a second axial end panel. An annular groove for reducing noise generation of the rotary vacuum pump during operation is formed at the annular axial end face of the rotor and/or the contact surface of the second axial end panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.