BICYCLE DRIVE (VERSIONS) Russian patent published in 2015 - IPC B62M1/36 B62M9/04 

FIELD: transport.

SUBSTANCE: bicycle drive includes pedal unit, frame connected with at least one drive package. In the first version, the drive package is made in the form of profiled disk of variable radius which disk is installed on rear wheel free play unit, flexible component and driving disk installed on pedal unit. In the butt end of disks, a channel for flexible component laying is made which component by its one end is secured on rear wheel disk at the point of minimum radius, and by its other end is secured on driving disk of pedal unit at its upper point. In the second version, the drive package represents free play units with the same profiled disks of variable radius installed on left and right rear wheels. In the butt end of disks, channels for flexible components laying are made which components by their one end are secured on the mentioned disks of rear wheel, and by their second end are connected with corresponding left and right driving disks of pedal unit.

EFFECT: higher reliability and lower weight of bicycle drive.

11 cl, 8 dwg