Patent ID: 6923164

Claim:
A fuel supply apparatus comprising: a lid unit fitted in a tank opening of a fuel tank, the lid unit having a fuel discharge passage portion through which to discharge fuel inside the fuel tank to an outside thereof and a guide tube portion disposed to extend in a direction inward of the fuel tank; a fuel pump body having a filter-integrated pump in which a fuel pump and a fuel filter are integrally formed and a fuel reservoir having a bottom capable of coming into abutment with a bottom side of the fuel tank, the filter-integrated pump being integrally accommodated in the fuel reservoir, the fuel inside the fuel tank being transferred under pressure to an internal combustion engine via the fuel discharge passage portion; a sliding tube portion disposed to extend from the fuel pump body toward the tank opening and expansibly fitted onto the guide tube portion; an air-tight member disposed in a sliding portion between the guide tube portion and the sliding tube portion; and a pressure regulator secured to the fuel pump body and operative to regulate a pressure of the fuel discharged from the fuel discharge passage portion to a predetermined pressure, the fuel pump body being operative to travel according to variations in depth of the bottom side of the fuel tank by making use of relative expanding and shortening movements between the guide tube portion and the sliding tube portion, by an urging force generated on the basis of a pressure regulated by the pressure regulator.