Patents Assigned to Alshtom
  • Hall effect position sensor for a railway vehicle axle
    Patent number: 4943772
    Abstract: A position sensor for measuring the separation, in a givne direction (Oy), between a first part such as a datum element of a railway vehicle axle and a fixed second part such as a rail on which said axles runs, includes magnets (11, 12) for producing a magnetic field above the second part (10) and Hall effect probes (15) for measuring the value of the component of the field in said given direction (Oy) with variation in that value being proportional to the separation.
    Type: Grant
    Filed: April 18, 1989
    Date of Patent: July 24, 1990
    Assignees: Alshtom, Institut National de Recherche sur les Transports et leur Securite
    Inventors: Jean-Louis Maupu, Hugues Chollet, Pierre Caroff, Denis Duhot