Torque measurement apparatus

Measuring and testing – Dynamometers – Responsive to torque

Reexamination Certificate

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Details

C073S862333, C073S862339

Reexamination Certificate

active

06997065

ABSTRACT:
Torque in a shaft is detected by means of non-contacting sensors sensing a torque-dependent magnetic field emanated by an integral transducer region of the shaft that is circumferentially or longitudinally magnetized. The shaft is driven by a motor and subject to a longitudinal magnetic field which acts on interference field. In one implementation of the invention coils are energized to provide a counteracting magnetic field to compensate the interference field.

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