Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Nippondenso Co., Ltd.

Aisan Industry Co., Ltd.

Hideyuki Nakai

Kenji Okabe

Kouji Izutani

Kingo Okada

Keiichi Yamashita

Katsuhisa Yamada

Masahide Kobayashi

Takashi Nagai

Satomi Wada

Eiji Mori

Kunihiro Umetsu

Yukihiro Okane

Akiyoshi Mukaidani

Kazuhiro Shinomiya

Naoki Maki

The filter apparatus is composed of a filter housing made of non-conductive material, a filter element made of conductive material contained in the filter housing, and a conductive plug with a sealing element. The filter housing has a bore and the conductive plug is inserted into the bore of the filter housing so that the clearance between the conductive plug and the filter housing is hermetically sealed by the sealing element. The conductive plug is connected in circuit to the filter element in a manner that a part of the plug is exposed out of the filter housing and an earth wire attached to the exposed portion of the plug. The static electricity generated in the filter apparatus is released via a conductive path extending from the filter element through the plug to the earth wire so that the electrostatic discharge may be prevented. The conductive plug is made of material having 10,to 10,&OHgr;&middot;cm resistivity. Such a value of resistivity serves to assure not only an adequate conductivity for releasing the static electricity but also an adequate resistance for preventing the electrostatic discharge from the conductive plug, if the earth wire becomes off or its connection is forgotten.

Fuel filter apparatus with anti-electrostatic function

A fuel supply system having a pump for drawing and discharging fuel from a tank and a filter for catching foreign matter in the fuel. A housing has a fuel outlet and supports the pump. The pump has a fuel intake port and a fuel discharge port. A fuel passage is located in the housing and connects the fuel outlet with the discharge port The filter is located in the fuel passage. The filter has a filter case and a filter element therein. The filter case is located in the housing spaced from the inner wall thereof.

Fuel supply system having a pump with a resiliently mounted filter

A fuel pump apparatus disposed within a fuel tank which may be employed in automotive vehicles is disclosed. The fuel pump apparatus includes a fuel pump, a filter, and a conductive member. The fuel pump is disposed within a conductive pump housing. The filter includes a filter element and a conductive filter casing. The filter element removes particles contained in fuel which is discharged from the fuel pump and returned to the fuel tank. The conductive member electrically connects between the pump housing and the filter casing for dissipating electrostatic charges generated by the friction between the filter element and the fuel passing through the filter element.

In-tank fuel pump apparatus having improved structure for dissipating

Growing community of inventors

Obu, Japan

Hideyuki Nakai