Acoustic vacuum pump
US6638032B1 · kind B1 · utility
7Cited by
11References
17Claims
0Family size
Inventors
Key dates
| Filing date | Oct 29, 2001 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Oct 29, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04F7/00
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Vacuum pump with a chamber (1) having, on one side, an intake (2) for pumping gas and, on the opposite side, an outlet (3) for the gas, displacement elements (4) being provided to drive the gas from the intake (2) towards the outlet (3), the displacement elements (4) including at least a vibrating element (4) for generating sound waves moving in the chamber (1), elements for closing (6) the outlet (3) being provided synchronously co-operating with the displacement elements (4) so as to clear the outlet opening (3) when the gas pressure in the proximity of the outlet (3) is higher than that in the proximity of the intake (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.