Patent ID: 7314225

Claim:
A system for stabilizing a two-wheeled vehicle comprising: a moving mass mounted with respect to a steerable front wheel of the vehicle that has a characteristic precession so that the front wheel is urged in a direction of an unintentional bank to provide recovery in the form of steering from the bank, the front wheel being mounted on a steerable front fork having an axle an inner hub coaxial with the axle that allows the front wheel to rotate relative to the axle and the front fork; the moving mass being rotatably mounted on an outer hub that is coaxially mounted on the inner hub of the front wheel with a bearing structure therebetween so as to allow the moving mass to rotate freely with respect to the inner hub; and a drive hub attached to the moving mass, constructed and arranged so that selectively engaging an interface of the drive hub with a selectively movable drive member causes spin-up of the moving mass to a rotating state from a nonrotating state with respect to the inner hub while the inner hub and the front wheel is stationary and non-rotating.