Electricity: measuring and testing – Magnetic – Displacement
Reexamination Certificate
2007-07-23
2009-12-29
Patidar, Jay M (Department: 2858)
Electricity: measuring and testing
Magnetic
Displacement
C324S207200
Reexamination Certificate
active
07639004
ABSTRACT:
An apparatus for measuring relative displacement between a first shaft and a second shaft includes first and second rotor assemblies. The first rotor assembly is coupled to the first shaft and is centered on an axis. The second rotor assembly is coupled to the second shaft. The second rotor assembly has first and second stator plates. Each of the first and second stator plates includes an upper surface and a lower surface. The first and second stator plates include a plurality of teeth extending in a direction radial of the axis. The apparatus further includes at least one magnet having a magnetic field and disposed on the first rotor assembly. The apparatus includes a flux collector arrangement having first and second collectors positioned adjacent the first and second stator plates, respectively, forming a gap. A sensing device disposed within the gap senses a magnetic flux of the magnetic field.
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Feng Sainan
Islam Mohammad S.
Islam Mohammed R.
Mielke Matthew W
Sebastian Tomy
Cantor & Colburn LLP
GM Global Technology Operations Inc.
Patidar Jay M
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