Patent ID: 8784080
Filing Date: 2014-07-22
Classification: B60N,F04B

Abstract:
1. A diaphragm pump for a seat adjusting device, configured to supply a fluid, in particular a gas, and comprising: a diaphragm and a valve member defining a pump chamber therebetween, said valve member having a pressure chamber in fluid communication with said outlet valve and configured to receive said fluid discharged from said pump chamber, wherein said diaphragm comprises a valve membrane of a pressure relief valve, said valve membrane being integrally formed with said diaphragm, said valve membrane being moveable in operation between a first configuration in which the valve membrane closes a pressure relief channel and a second configuration in which said valve membrane opens said pressure relief channel to allow fluid to be discharged from said pressure chamber; a bias member for biasing said valve membrane into said first configuration; and a diaphragm carrier supporting the diaphragm, the diaphragm carrier having a seat in which the bias member is received.