Electricity: measuring and testing – Magnetic – Displacement
Patent
1992-02-27
1995-04-04
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Displacement
310168, 318661, 32420725, 32420726, 336 45, G01B 730, G01B 714, H02K 304, H01F 1502
Patent
active
054041015
ABSTRACT:
A rotary sensing device for indicating the angular displacement of a shaft is disclosed which comprises a magnetic core member formed of ferromagnetic material, a first winding wound within the core member for producing a first magnetic field in a closed path throughout the core, a second winding wound around the core member for producing a second magnetic field in a closed path throughout the core, the first and second magnetic fields being orthogonal to each other, and a pick-up coil assembly associated with the magnetic core member, the magnetic fields, and the shaft for sensing angular displacement of the shaft. A proximity sensor for sensing the passage of an object and the direction of passage of the object is also disclosed.
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