Patent ID: 6945763

Claim:
A geared feed pump, comprising a housing ( 10 , 12 ) in which a pump chamber ( 14 ) is formed, a rotationally driven pair of gear wheels ( 16 , 18 ) meshing with one another disposed in the pump chamber ( 14 ) which gear wheels pump a pumping medium out of a suction chamber ( 44 ) along feed conduits ( 48 ), formed between the circumferential surface of the gear wheels ( 16 , 18 ) and the circumferential walls of the pump chamber ( 14 ), into a pressure chamber ( 46 ), and a drive shaft ( 30 ) which is connected in a rotationally engaged manner with one of the gear wheels ( 16 ) via a coupling member ( 40 ) disposed inside the housing ( 10 , 11 ) in a coupling chamber ( 41 ), and a connection ( 32 , 54 , 56 ) communicating the coupling chamber ( 41 ) with the pressure chamber ( 46 ), further comprising a pressure valve ( 60 ) disposed in the connection ( 32 , 54 , 56 ) communicating the coupling chamber ( 41 ) with the pressure chamber ( 46 ), which pressure valve keeps the connection closed until a predetermined opening pressure in the pressure chamber ( 46 ) is exceeded, wherein the pressure valve ( 60 ) comprising a radially resilient sleeve ( 62 ) fastened in a bore ( 32 ) of a housing part ( 10 ), and a connecting bore ( 56 ) to the pressure chamber ( 46 ) discharging into the bore ( 32 ) at the jacket of the sleeve ( 62 ).