Patent ID: 7484929

Claim:
Exhaust apparatus for diluting a forced, primary flow of gases with a secondary flow and expelling the consequential diluted flow; said apparatus comprising: a passageway for said forced, primary flow; said passageway terminating in an outlet port; a center body axially extending from the outlet port to a spaced terminal end, said center body being radially contoured in the axial direction from the outlet port toward the terminal end to include a flaring portion, and then a convex transition portion, wherein the outlet port delivers the primary flow to outflow therefrom and be flared out by traversing along the flaring portion; and a collar, axially extending between an input end and a spaced output end, and radially sized to surround the center body and define with said center body an annular flow passage; said collar including an intermediate hoop section sized and disposed to define an annular throat in combination with the center body's convex transition portion; said collar being disposed such that the input end is aimed to channel the outflow of the primary flow from the outlet port toward said throat, wherein said collar's input end is spaced away from said passageway's outlet port to allow the introduction of the secondary flow to the primary flow such that the consequential diluted flow flows through said throat and is expelled out the output end.