Patent ID: 8188727
Filing Date: 2012-05-29
Classification: G01P

Abstract:
1. A hub mountable speed sensing device comprising: a housing; a metallic tubular insert adapted for securedly supporting thereon a rotatable metal wheel and also to be press fitted with respect to said housing; a stationary speed sensing/rotation detection probe comprising a magnetic conversion device having a bias magnet and adapted to be inserted into the housing in close proximity to said rotating metal wheel mounted on said metallic tubular insert and having sensing teeth along its axis made of ferrous material; a locking arrangement provided to prevent the said detection probe from dislodging from said housing; and wherein the said bias magnet is adapted to generate magnetic flux which is interrupted by the said teeth of said rotatable metal wheel while rotating and said magnetic conversion device providing for speed sensing based on the change in flux density; wherein a hub mountable speed sensing device comprising a circular opening along with a Key way slot provided on the housing and axis of the circular opening aligned such a way to position the Hall IC or the like tangentially to said rotor and a guide hole coaxially aligned to above said circular opening for correct alignment of over molded probe along the radial direction, said Key way slot of the circular opening providing for over molded probe alignment in axial direction.