Method and means for monitoring torque in a hydraulic power...

Measuring and testing – Dynamometers – Responsive to torque

Reexamination Certificate

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Reexamination Certificate

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06925892

ABSTRACT:
The present invention is directed towards a hydraulic power unit including a housing, an internal hydraulic power means, an external hydraulic power means, and a mechanical power shaft associated with the hydraulic power means. In addition, the hydraulic power unit comprises a transducer adapted for measuring torque mounted in the housing in a non-contact relation to the mechanical power shaft adjacent a portion of the shaft imposed with a magnetic field. The hydraulic power unit further comprises a controller associated with the transducer to monitor the measured torque and adjust the operation of the hydraulic power unit accordingly.

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“The New Standard for Torque Sensing”, Magnetoelastic Devices Inc.—Copyright 1998.

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