Patent ID: 8672614

Claim:
Exhaust apparatus for combining a forced, first flow of gases with a second flow and expelling the consequential combined flow; said apparatus comprising: an impeller wheel for forcing the second flow in a direction from a suction side to a pressure side, said impeller wheel comprising a hub for rotation about a spin axis, a coaxial rim annularly spaced from the hub and axially extending between a pressure-side edge and a suction-side edge, apertured webbing radially spacing and interconnecting the hub and rim, angularly spaced blades extending radially out from the rim to tip edges, wherein said apertured webbing is passive to the first flow and said impeller wheel is driven under a load or loads which are independent of the first flow; a drive for spinning the impeller wheel; a passageway for said forced, first flow that terminates in an outlet port for the passageway which is disposed to match up with the rim's suction-side edge for channeling the forced, first flow to pass through the apertured webbing from the suction side to the pressure side.