RATCHETING MECHANICAL TORQUE WRENCH WITH AN ELECTRONIC SENSOR AND DISPLAY DEVICE
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United States of America Patent
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N/A
Issued Date -
May 31, 2012
app pub date -
Jul 21, 2011
filing date -
Nov 30, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A mechanical torque wrench for engaging a workpiece, including a wrench body, a wrench head with a workpiece engaging portion and a bar, the wrench head being pivotably secured to the wrench body, a set spring, a pawl disposed between the bar and the set spring, and a dial screw, wherein rotation of the dial screw in a first direction compresses the set spring. A resistive element is coupled to the dial screw and produces an output signal. A first sensor produces a first output signal that is proportional to an amount of rotation of the mechanical torque wrench. A processor converts the resistive element output signal into an equivalent torque value indicating a preset torque to be applied by and converts the first output signal into a first angle value. A user interface includes a display for displaying the equivalent torque value. The application of a torque greater than the preset torque causes the wrench head to pivot relative to the wrench body.
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