A device for displaying the gear parameters of a bicycle comprises a sensor for detecting the position of the member (or members) for controlling the gear-change, and display means connected to the sensor means and able to supply a signal indicative of the ratio engaged. In a preferred embodiment, the...http://www.google.com/patents/US4859984?utm_source=gb-gplus-sharePatent US4859984 - Device for displaying the gear parameters of a bicycle or the like
