Patent ID: 7446525

Claim:
A magnetic pressure sensing device for a rotatably moving part comprising: a magnetic field source element associated to said rotatably moving part, said magnetic field source element comprises a first permanent magnet for generating a magnetic field; and a magnetic field sensing element associated with a fixed part to measure parameters of the magnetic field generated by the first permanent magnet, said parameters of the magnetic field (H) being a function of pressure applied to said rotatably moving part, wherein said magnetic field source element comprises rotating means for rotating a direction of said magnetic field about at least one axis as a function of the pressure applied to said rotatably moving part, wherein said rotating means comprise converting means for converting a force determined by said pressure applied along said axis into a rotation of the direction of said magnetic field, wherein said converting means comprise means for converting said force into a displacement along said axis, wherein said means for converting said force into a displacement along said axis comprise a resilient membrane, wherein said resilient membrane is associated with a second permanent magnet and wherein said first permanent magnet is associated with a levitating disk able to be set in rotating motion by said second permanent magnet.