An exercise bicycle is composed of a bicycle frame, a vibration device, a driving device, and a clutch device. The bicycle frame is provided with a pedal device. The vibration device and the pedal device are driven by the driving device such that the pedal device can be temporarily disabled by the clutch...http://www.google.fr/patents/US6077201?utm_source=gb-gplus-shareBrevet US6077201 - Exercise bicycle
