Patent ID: 6684713
Filing Date: 2004-02-03
Classification: B62J,G01L

Abstract:
A vibration transducer for use in measuring the tensile stress transmitted by force transmission equipment, wherein the vibration transducer intended to be fastened to the force transmission equipment is arranged to receive an electromagnetic excitation and to vibrate at a resonance frequency proportional to the tensile stress affecting the force transmission equipment, the resonance frequency being wirelessly readable for use in calculating the tensile stress transmitted by the force transmission equipment, the force transmission equipment being a bicycle chain, the chain comprising chain pieces which are connected to each other by axle pins, the vibration transducer being at least one of located in an axle pin and fastened to a side plate of a chain piece, the vibration transducer vibrating at a resonance frequency proportional to the tensile stress transmitted by the chain.