(under subclass 39.16) Plants including means to treat the combustion products between successive stages of expansion, as, for example, by heating, cooling, or by the addition of fuel air, water, steam or more combustion products.
SEE OR SEARCH THIS CLASS, SUBCLASS:
643+, and 662, for multiple stage motor plants using mixed fluids other than products of combustion, having means for admitting fluid between expansion stages from some source other than the next preceding stage while fluid is being admitted from the preceding stage.
648, 677, 679, and 684, for multiple stage motors using motive fluid other than products of combustion, including means affecting the motive fluid between stages, as, for example, (1) tapping fluid for external use, (2) reheating, or (3) separation of condensate.
SEE OR SEARCH CLASS
91, Motors: Expansible Chamber Type,
8+, for multiple expansion type expansible chamber motors having means for permitting a subsequent pressure stage to receive motive fluid other than that discharged from the immediately prior stage, said prior stage also receiving motive fluid and at least ultimately discharging it into said subsequent stage.
