DRIVE WITH CONTINUOUSLY VARYING GEAR RATIO Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: drive with continuously varying gear ratio, with coaxial input and output, capable of operating at least at two modes has torus variable-speed drive, and gear reduction unit and epicyclic summing unit arranged in tandem. Summing unit has clutch for locking its members in at least one of operating modes; gear reduction unit provides reduction of speed without changing direction of rotation between its input and output. Working axis of variable-speed drive can either coincide with coaxial input and output of drive, or can be parallel with them. Invention provides description of additional clamping device for engagement of third mode of operation, in additional to brake clamping device set into action for engagement of first and second modes of operation. EFFECT: enlarged operating capabilities. 6 cl, 3 dwg