Membrane pump operating in both audible and inaudible frequency regions
US8708665B2 · kind B2 · utility
0Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2009 |
| Grant date | Apr 29, 2014 |
| Priority date | — |
| Expiry date | Feb 20, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A membrane pump (1) for pumping a medium has a pump housing (2), a membrane (3) mounted to the pump housing and delimiting a pump chamber (4) inside the pump housing (2) and an actuating device for moving the membrane (3) to and fro to expand and contract the pump chamber (4). In a first operating mode, the actuating device moves the membrane (3) in a frequency suitable for pumping the medium into and out of the pump chamber (4), and in a second operating mode, the actuating device moves the membrane (3) in a frequency in the audible frequency region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.