Diaphragm pump for a seat adjusting device and seat adjusting device
US8784080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2011 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Oct 31, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B45/045
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A diaphragm pump for a seat adjusting device comprises a diaphragm and a valve member which define a pump chamber therebetween. An inlet valve and an outlet valve are formed on the valve member. A pressure chamber is in fluid communication with the outlet valve and receives fluid discharged from the pump chamber via the outlet valve. One of the diaphragm and the valve member comprises a valve membrane of a pressure relief valve integrated in the pump. The valve membrane is integrally formed with the one of the diaphragm and the valve member. The valve membrane is moveable between a first configuration in which the valve membrane closes a pressure relief channel and a second configuration in which the valve membrane opens the pressure relief channel to allow fluid to be discharged from the pressure chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.