US 12,258,934 B2
Open and closed cycle lift force turbines
Orville J. Birkestrand, Davenport, IA (US)
Filed by Orville J. Birkestrand, Davenport, IA (US)
Filed on Sep. 1, 2023, as Appl. No. 18/241,724.
Application 18/241,724 is a continuation in part of application No. 17/186,739, filed on Feb. 26, 2021, granted, now 11,781,521.
Claims priority of provisional application 62/982,421, filed on Feb. 27, 2020.
Prior Publication US 2024/0035436 A1, Feb. 1, 2024
Int. Cl. F03D 1/06 (2006.01); F03D 1/04 (2006.01); F03D 9/25 (2016.01)
CPC F03D 1/0641 (2013.01) [F03D 1/04 (2013.01); F03D 9/25 (2016.05); F05B 2240/13 (2013.01); F05B 2240/301 (2013.01)] 24 Claims
OG exemplary drawing
 
1. An apparatus comprising:
an open cycle lift turbine assembly operatively interconnected with an axial flow turbine assembly, the lift turbine assembly and the axial flow turbine assembly being housed within a container filled with a flow through gas;
the lift turbine assembly including,
(a) a bypass fan;
(b) an input stator having a first set of blades, the first set of blades causing a counter rotation flow in the gas;
(c) a lift turbine having a second set of blades, the second set of blades generating lift force, the second set of blades rotating into the counter rotation flow of the gas; and
the axial flow turbine assembly including:
(a) an axial flow input stator having a third set of blades;
(b) an axial flow turbine having a fourth set of blades, the fourth set of blades rotating into the counter rotation flow.