| US 7,389,768 B2 | ||
| Pump module having sub-tank and elastic member | ||
| Tetsuo Hayakawa, Kariya (Japan); Hideto Takahashi, Kariya (Japan); and Tadashi Hazama, Chita-gun (Japan) | ||
| Assigned to Denso Corporation, Kariya, Aichi-pref. (Japan) | ||
| Filed on Mar. 29, 2005, as Appl. No. 11/91,762. | ||
| Claims priority of application No. 2004-100164 (JP), filed on Mar. 30, 2004; and application No. 2005-023688 (JP), filed on Jan. 31, 2005. | ||
| Prior Publication US 2005/0217733 A1, Oct. 06, 2005 | ||
| Int. Cl. F02M 37/10 (2006.01) | ||
| U.S. Cl. 123—509 [137/565.34] | 24 Claims |
| 1. A pump module mounted to a fuel tank, the pump module comprising:
a sub-tank that is accommodated in the fuel tank;
a fuel pump that is accommodated in the sub-tank, the fuel pump pumping fuel, which is drawn into the sub-tank; and
an elastic member that is formed of an elastomer, the elastic member interposed between a bottom portion of the sub-tank and
a bottom portion of the fuel tank, the elastic member making contact with fuel,
wherein the elastic member defines at least one space to release stress that arises in the elastic member due to swelling,
and
wherein the elastic member defines a plurality of spaces, and the plurality of spaces is arranged in a substantially circumferential
direction of the sub-tank.
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