Crankset and method for transfering power in a crankset

A crankset for a pedal-driven vehicle having a frame, the crankset comprising two crank arm assemblies, each one of the crank arm assemblies comprising:

• a crank arm rotatably mounted to the frame and having a rotation center at a rotation end thereof;
• a spindle operatively connected to the crank arm at a spindle end spaced-apart from the rotation end and rotatable about a spindle rotation axis;
• a pedal mounted to the spindle and having a foot receiving surface;
• a rotatable member operatively engaged with the spindle;
• a stationary member secured to the frame and close to the rotation end of the crank arm;
• a connecting assembly operatively engaged with the stationary member and the rotatable member and configured to engage the rotatable member in rotation upon rotation of the crank arm about the rotation center thereof;
• and
• a pedal angular control assembly operatively connected to the rotatable member, the pedal angular control assembly varying an angle of the foot receiving surface of the pedal according to a predetermined angular sequence, during a complete rotation of the crank arm about the rotation center and comprising at least one cam operatively connected to the rotatable member and operatively engaged with the pedal, and a cam connecting assembly configured to engage in rotation the at least one cam upon rotation of the spindle.

A method for transferring power in a crankset of a pedal-driven vehicle, the crankset comprising a crank arm having a rotation end rotatably mounted to a bracket shell of the pedal-driven vehicle, a spindle operatively connected to a spindle end of the crank arm, and a pedal operatively connected to the spindle and having a foot receiving face, the method comprising:

• applying forces to the pedal to engage in rotation the crank arm about a rotation axis of the crank arm;
• driving at least one cam of a pedal angular control assembly in rotation by rotation of the crank arm about the rotation axis;
• and
• controlling an angle of the foot receiving face of the pedal according to a predetermined angular sequence, during a complete rotation of the crank arm, the controlling of the angle of the foot receiving face of the pedal being performed by the cam of the pedal angular control assembly.