Patent ID: 6758661
Filing Date: 2004-07-06
Classification: F02B,F04C

Abstract:
A rotary blower of the backflow type comprising a housing, first and second meshed lobed rotors, each lobe having a leading end and a trailing end, said rotors being rotatably disposed in said housing for transferring relatively low pressure inlet port air to relatively high pressure outlet port air; first and second meshed timing gears fixed to be non-rotatable relative to said first and second rotors, respectively, for preventing contact of said meshed lobes of said rotors; an input drive member adapted to transmit an input drive torque to said second rotor, said housing defining an inlet port and an outlet port; characterized by:(a) said housing having a rearward end and a forward end, adapted to be oriented toward the forward end of a vehicle engine compartment, said input drive member extending forwardly from said forward end of said housing; (b) said inlet port being disposed at said forward end of said housing adjacent said leading end of said rotors and being defined substantially by a forward end wall of said housing, and said inlet port being disposed above said input drive member; and (c) said housing including a duct portion in open fluid communication with said inlet port, said duct portion extending forwardly and defining a forward duct opening disposed above said input drive member.