A stability control apparatus, includes: a grip detector that changes an output based on a grip force applied in a direction hindering a slippage of a wheel, acting on a contact face between the wheel supported by a wheel supporting rolling bearing unit and the road surface, the wheel supporting rolling...http://www.google.com.hk/patents/US20060259225?utm_source=gb-gplus-share專利 US20060259225 - Stability control apparatus and load measuring instrument for wheel supporting rolling bearing unit
