×

Magnetic-based transducer for measuring displacement

  • US 6,810,754 B2
  • Filed: 02/24/2003
  • Issued: 11/02/2004
  • Est. Priority Date: 02/22/2002
  • Status: Expired due to Term
First Claim
Patent Images

1. A transducer for measuring displacement comprising:

  • a transducer assembly in which there is a coil wound about an axis and energisable to generate a magnetic field, and first and second magnetic field sensor devices, that are axially spaced with coil therebetween, each device being in proximity to the coil to respond to a magnetic field component generated by energisation of the coil;

    and a ferromagnetic member disposed to interact with the field generated by the coil, the ferromagnetic member and the transducer assembly being mounted for relative displacement in the direction of said axis, such that the balance of the respective field components sensed by the first and second sensor devices is a function of the axial position of the ferromagnetic member relative to the transducer assembly.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×