Measuring and testing – Dynamometers – Responsive to torque
Reexamination Certificate
2006-04-11
2006-04-11
Noori, Max (Department: 2855)
Measuring and testing
Dynamometers
Responsive to torque
C073S862335
Reexamination Certificate
active
07024946
ABSTRACT:
The subject invention provides an assembly for measuring movement of and a torque applied to a shaft extending between first and second ends and being hollow, specifically for measuring rotation and twisting of the shaft. A permanent magnet is disposed within the shaft for producing a parallel magnetic field emanating radially from the shaft. A sensor mechanism is positioned adjacent the shaft to detect the magnetic flux produced in response to the shaft being moved. The sensor mechanism includes a magnetostrictive (MR) material disposed annularly about the shaft and extends between first and second edges. A flux collector extends beyond the first and second edges of the magnetostrictive material to direct the magnetic flux through a Hall sensor to detect an axial component of the magnetic flux in response to twisting. A positional ring extends annularly around and spaced from the shaft and a positional sensor is disposed between the positional ring and the shaft for measuring a radial component of the magnetic flux in response to rotating.
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Fuller Brian K
Mantese Joseph V.
Morelli Donald T.
Nehl Thomas Wolfgang
Omekanda Avoki M.
Delphi Technologies Inc.
Jenkins Jermaine
McBain Scott A.
Noori Max
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