Patent ID: 7628143

Claim:
A fuel supply device configured to supply fuel in a fuel tank to an external unit, the device comprising: a subtank accommodated in the fuel tank, the subtank storing a part of the fuel in the fuel tank; a fuel pump accommodated in the subtank, the fuel pump having a first pump unit, which is configured to suction fuel in the subtank thereby to supply fuel to the external unit, and a second pump unit, which is configured to suction fuel outside the subtank thereby to pump fuel into the subtank; and a filter member that is connected to a first suction port of the first pump unit and a second suction port of the second pump unit and that is configured to filter the fuel supplied to the external unit and the fuel pumped into the subtank, wherein the filter member includes: a case having therein a partition wall, which defines a first flow passage and a second flow passage, wherein the first flow passage directs the fuel in the subtank into the first suction port and the second flow passage directs the fuel outside the subtank into the second suction port; a first filter element disposed in the first flow passage for filtering the fuel supplied to the external unit; and a second filter element disposed in the second flow passage for filtering the fuel pumped into the subtank.