Patent ID: 6340294
Filing Date: 2002-01-22
Classification: F04B

Abstract:
A diaphragm type fuel pump comprising: a fuel sucking chamber and a fuel discharging chamber; a first body having a fuel introducing path communicating with the fuel sucking chamber and a fuel discharging path communicating with the fuel discharging chamber; a diaphragm fixed to the first body using a second body; and a pump chamber constituted by the diaphragm and the first body and communicating with the fuel introducing path and the fuel discharging path,wherein the diaphragm includes an outer diaphragm made of resin and having an opening formed within an effective diameter of the diaphragm, and an inner diaphragm arranged in the opening of the outer diaphragm, and the outer and inner diaphragms are mutually fixed using an elastic coupling member.