Apparatus and method for testing torque wrenches

Details Apparatus and method for testing torque wrenches Apparatus and method for testing torque wrenches

1991-05-02

1993-01-26

Goldstein, Herbert

Measuring and testing

Dynamometers

Responsive to torque

73 1C, G01L 300

Patent

active

051814250

ABSTRACT:
Torque wrench testing apparatus and method that includes holding a torque wrench, applying a predetermined torque load to one end of the wrench while limiting movement of the other end of the wrench, and measuring the actual torque applied, for comparison with the reading on the wrench gauge. The essential feature of the invention resides in the idea of limiting the movement of the other wrench end by a pylon that is pivotally mounted so that when it engages a pivotally mounted wrench handle, the handle will stay coaxial to the one end of the wrench to avoid a handle end from contacting the wrench beam, which would cause a change in the working length of the wrench beam and result in an incorrect calculation of torque.

REFERENCES:
patent: 2706903 (1955-04-01), Livermont
patent: 2955454 (1960-10-01), Husher
patent: 3274827 (1966-09-01), Sturtevant
patent: 3999426 (1976-12-01), Sonderegger

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