Patent ID: 6490507
Filing Date: 2002-12-03
Classification: B62J,G07C

Abstract:
Computer for a bicycle comprising:a speed change with a chain transmission, including a plurality of front crown wheels which can be driven in rotation by means of a pair of pedal cranks and a plurality of rear sprockets, first sensor means for providing an electric signal indicating the speed of rotation of one wheel of the bicycle, second sensor means for providing an electric signal indicating the speed of rotation of the pedal cranks, and third sensor means for providing an electric signal indicating which is the selected front crown wheel, the computer for bicycles comprising: a display for displaying riding information of the bicycle, and electronic control means for receiving the output signals of said sensors means and for producing the display of said riding information, said electronic control means being programmed for determining the number of teeth of the selected rear sprocket as a function of said signals and as a function of stored data indicating the number of teeth of the front crown wheel.