Aeronautics and astronautics – Aircraft propulsion – Screw
Patent
1981-07-31
1984-01-17
Blix, Trygve M.
Aeronautics and astronautics
Aircraft propulsion
Screw
244 54, 244 55, 244 60, 416125, 416170R, B64C 1148, B64D 2700, B64D 3506
Patent
active
044260490
ABSTRACT:
An aircraft drive system having two propellers, each of which is driven independently by a drive belt which is connected to a separate engine. The engines are mounted in cantilever fashion in a spaced relationship on a hollow sleeve. The sleeve is attached by a pair of spaced brackets to the frame of the aircraft. A shaft is rotatably telescopically mounted within the sleeve by bearings located on the ends of the sleeve. A pulley is fixedly mounted on one end of the shaft and is driven by one of the engines for rotating one of the propellers which is fixed on the other end of the shaft. Another pulley is rotatably mounted by bearings on the sleeve and is driven by a drive belt connected to the second engine. The second propeller is telescopically located about the sleeve adjacent the first propeller and is firmly connected to the second pulley which rotates said second propeller completely independent of the first propeller and in an opposite direction than the first propeller. The sleeve which is attached to the aircraft frame provides the entire support for the two drive engines, pulleys, propellers and associated drive belts.
REFERENCES:
patent: 899350 (1908-09-01), Steinhaus
patent: 1110489 (1914-09-01), Jacobs
patent: 1132368 (1915-03-01), Lorenc et al.
patent: 1394870 (1921-10-01), Thomas
patent: 1754737 (1930-04-01), Burks
patent: 1793933 (1931-02-01), Hoffman
patent: 3013749 (1961-12-01), Dunham
patent: 3335979 (1967-08-01), Kurkjian
patent: 3470961 (1969-10-01), Halsmer
patent: 4138901 (1979-02-01), Fortin et al.
patent: 4222280 (1980-09-01), Stewart
patent: 4249711 (1981-02-01), Godbersen
Blix Trygve M.
Corl Rodney
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