Mavic Group

Mavic S.a.s.

Jérôme Fantin

Jean-Pierre Mercat

Bérenger Alexandre

Olivier Mouzin

François-Xavier Huat

An assist device for a bicycle includes a motor, a step-down gear, a free wheel, and a shaft which rotates as one with a right crank and a left crank. The motor transmits an assist torque to the shaft by m the free wheel. The device is designed to be received inside a pedal assembly casing. The shaft is rotatably mounted relative to the casing by two ball bearings. The free wheel includes a plurality of pieces which are placed between the motor and the shaft. The device also includes a torque transmission ring which allows one of the pieces of the free wheel to be secured to the shaft or to one of the cranks. The transmission ring is at least partially placed under one of the two ball bearings.

Growing community of inventors

Seynod, France

Jérôme Fantin