Morgan & Finnegan, L.L.P.
Roots compressor
A roots compressor has a housing, a rotary shaft, a rotor and a layer. The housing defines a pump chamber, a suction port and a discharge port. The suction port and the discharge port adjoin to the pump chamber. The rotary shaft is rotatably supported by the housing. The rotor is connected to the rotary shaft and contained in the pump chamber. Fluid introduced into the pump chamber through the suction port is discharged to the outside of the pump chamber through the discharge port by rotation of the rotor which is driven through the rotary shaft. The layer is formed on an inner peripheral surface of the housing, which defines the pump chamber. The layer is thinner from a side adjacent to the suction port toward a side adjacent to the discharge port in circumferential direction of the housing.
Kabushiki Kaisha Toyota Jidoshokki
F F F F F F
F04C F05C F05C F04C F04C F04C
inventional additional additional additional additional additional
Toshiro Takayuki Kazuho
Fujii Hirano Yamada