COAXIAL TWIN-ROTOR ENGINE BIPLANETARY DRIVE Russian patent published in 2012 - IPC B63H7/02 B63H5/10 B64D35/06 B64C11/48 F16H48/10 

FIELD: transport.

SUBSTANCE: invention relates to machine building and may7 be used in vehicles driven and air screw. Biplanetary drive with ring gear made up of paired epicycle 3 is fitted in bearing 2 inside housing 1. Receiving section of epicycle 3 comprises epitrochoid working shape 4 outlined by vertices of triangular rotor 5. Crank 6 arranged off-center relative to sun ledge 7 with its axis aligned with ring gear center is arranged in rotor and aligned therewith. Radii of said sun ledge and crank relate as 2:3. Eccentricity equals half the radius of said ledge 7. Second part of ring gear represents inner gearing rim and comprises set of plane pinions coupled by central gear with sun ledge 7 and combined by drive carrier. Axial extensions of sun ledge 7 and ring gear comprise internal and external air screws, respectively.

EFFECT: expanded operating performances, lower power loss and simplified design.

2 dwg