Quality Magazine

ASI Datamyte Receives Patent for its LightStar Residual Torque Measurement System

June 13, 2011

PLYMOUTH, MN-The U.S. Patent Office issued patent number 7,934,428 for the residual torque analysis technology used in ASI Datamyte’s LightStar line of torque and angle wrenches and measurement system.

The technology empowers the application of a torque rate differentiation method known as angle restart. This approach was developed specifically to eliminate the false high and false low readings associated with peak measurement and to eliminate the error inducing guesswork associated with the capture angle methodology. This is done by detecting the change in angular torque rate between flex or windup as torque is initially applied and actual fastener rotation. Angle restart torque is captured at the start of actual fastener rotation where the torque curve transitions from the windup slope to the rotation slope. In other words, Angle Restart captures residual torque at the instant of fastener rotation.