Apparatus for measuring the torque applied to a wrench

Details Apparatus for measuring the torque applied to a wrench Apparatus for measuring the torque applied to a wrench

1980-06-09

1981-04-21

Ruehl, Charles A.

Measuring and testing

Brake testing

Single wheel rotating and resistance measuring means

33334, B25B 23142

Patent

active

042625289

ABSTRACT:
Disclosed herein is a wrench-type hand tool having apparatus for indicating the magnitude of the tightening angle through which the tool is rotated about an axis through a workpiece when applying a torque to the workpiece. The apparatus comprises a gyroscope having a rotor defining a spin axis mounted upon the tool for rotation therewith. The spin axis is oriented substantially transversely to the axis of the workpiece. Means are provided for determining the magnitude of precession of the gyroscope rotor, so that the magnitude of the tightening angle can be indicated as a function of the time integral of the magnitude of precession.

REFERENCES:
patent: 3386170 (1968-06-01), von Bose
patent: 3477298 (1969-11-01), Howe
patent: 4091664 (1978-05-01), Zerver

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