Dennison, Meserole, Pollack & Scheiner
Fuel pump assembly having reduced vapor discharge noise
 A fuel pump assembly having a vapor by-pass port communicating a pump chamber with the interior of a fuel tank, which comprises a vapor introducing passage for introducing the vapor-mixed fuel discharged through the vapor by-pass port, a vapor discharge port communicating with the midway of the vapor introducing passage and opening to the interior of the fuel tank, and a bag-like closed space formed on a rear half portion of the vapor introducing passage. The vapor discharge noise is effectively reduced with the construction. 
Aisan Kogyo Kabushiki Kaisha
F F
F04D F04D
inventional inventional
Takehide Kiyoshi Kouichi
Nakamura Kato Iwata